An environmentally friendly organic biosorbent was fabricated using hay by succinylation. Metallic cation adsorption tests were performed using synthetic nickel(Ⅱ) and cadmium(Ⅱ) solutions to simulate heavy-metal re...An environmentally friendly organic biosorbent was fabricated using hay by succinylation. Metallic cation adsorption tests were performed using synthetic nickel(Ⅱ) and cadmium(Ⅱ) solutions to simulate heavy-metal recovery from aqueous solution. The adsorption efficiency was greater than 98% for both cadmium and nickel ions when the biosorbent concentration was 5.0 g/L and the initial metal concentrations were 50 mg/L. The surface of the biosorbent was characterized using Fourier transform infrared spectroscopy to investigate the changes in the surface functional groups. The functional groups changed according to the surface treatment, resulting in an effective biosorbent. The kinetics of the metals adsorption revealed that the reactions are pseudo-second order, and the adsorption isotherm well followed the Langmuir model. The maximum adsorption capacities predicted by the Langmuir model were 75.19 mg/g and 57.77 mg/g for cadmium and nickel, respectively. The fabricated biosorbent was regenerated using Na Cl multiple times, with 2.1% for Cd and 4.0% for Ni in adsorption capacity after three regeneration cycles. The proposed biosorbent can be a good alternative to resin or other chemical adsorbents for heavy-metal recovery in metallurgical processing or municipal water treatment.展开更多
Refined carbon(RC) derived from coal fly ash(CFA) as well as powdered activated carbon(PAC) was investigated as adsorbent to remove residual amine collector HAY from aqueous solution.The RC and PAC were characterized ...Refined carbon(RC) derived from coal fly ash(CFA) as well as powdered activated carbon(PAC) was investigated as adsorbent to remove residual amine collector HAY from aqueous solution.The RC and PAC were characterized by scanning electron microscopy(SEM),surface area measurement,Zeta potential measurement and Fourier transform infrared(FTIR) spectroscopy.The effect factors and mechanisms of HAY adsorption onto RC and PAC were studied in detail.The results show that the experimental kinetic data agree well with the pseudo second-order equation,and the Langmuir isotherm model is found to be more appropriate to explicate the experimental equilibrium isotherm results than the Freundlich model.The adsorption capacities of PAC and RC increase with pH.It is found that alkaline condition is conducive to the adsorption of HAY onto PAC and RC and the adsorption efficiency of RC is close to PAC at pH near 11.Zeta potential variation of adsorbents suggests that HAY generates electrostatic adsorption onto RC and PAC.FTIR analysis shows that the adsorption is dominantly of a physical process.The Box-Behnken design optimization conditions of process are RC 1 g/L,pH 11,temperature 302 K and initial HAY concentration 100 mg/L.Under these conditions,the measured adsorption ratio and adsorption capacity are 87.91%and 87.91 mg/g,respectively.Thus,the RC is considered to be a potential adsorbent for the removal of residual amine from aqueous solution.展开更多
Due to the worldwide epidemic of allergic disease and a cure nowhere in sight,there is a crucial need to explore its pathophysiological mechanisms.As allergic disease has been associated with gut dysbiosis,we searched...Due to the worldwide epidemic of allergic disease and a cure nowhere in sight,there is a crucial need to explore its pathophysiological mechanisms.As allergic disease has been associated with gut dysbiosis,we searched for a possible mechanism from the perspective of the molecular interface between host and microbiota with concurrent metabolomics and microbiome composition analysis.Sprague-Dawley rats were injected with Artemisia pollen extract to stimulate a hyper reaction to pollen.This hyper reaction decreased the circulation of valine,isoleucine,aspartate,glutamate,glutamine,indole-propionate(IPA),and myo-inositol,and reduced short-chain fatty acids(SCFAs)in feces.Several beneficial genera belonging to Ruminococcaceae,Lachnospiraceae,and Clostridiales declined in the model group,whereas Helicobacter and Akkermansia were only expressed in the model group.Furthermore,the expression of intestinal claudin-3 and liver fatty acid binding protein was downregulated in the model group and associated with metabolic changes and bacteria.Our results suggest that alterations in amino acids as well as their derivatives(especially valine,and IPA which is the reductive product of tryptophan),SCFAs,and the gut microbiome(specifically Akkermansia and Helicobacter)may disrupt the intestinal barrier function by inhibiting the expression of claudin proteins and affecting the mucus layer,which further results in hay fever.展开更多
This is a story about a Chinese herbalist Ing“Doc”Hay who combated the 1918–1919 influenza pandemic in the America West.As an immigrant,he came to the States as a laborer,but he had knowledge of Chinese herbal medi...This is a story about a Chinese herbalist Ing“Doc”Hay who combated the 1918–1919 influenza pandemic in the America West.As an immigrant,he came to the States as a laborer,but he had knowledge of Chinese herbal medicine due to his family heritage.This made it possible for him to start practicing in the Chinese community in John Day,Oregon,until 1948 when he retired.During the time of the pandemic running wild in the 1910s,he prescribed formulas aimed at flu and boiled herbal decoction,personally delivering it to a working site for those Chinese laborers as well as non‑Chinese patients.None of the laborer patients treated by him died during this deadly pandemic.Due to his success and fame,his practice was booming even after the Chinese community disappeared in John Day in later years.Doc Hay is always remembered in the history of earlier development in eastern Oregon,so that the site of his practicing,Kam Wah Chung and Co.Building,is now a national historic landmark.And more importantly,he has also been remembered by Chinese herbal medicine practitioners in the United States.展开更多
Objectives:Chinese medicine doctors have practiced in the United States since April of 1854,the world's first Chinese medicine doctor's memorial is Kam Wah Chung Museum in John Day,Oregon,U.S.,to commemorate D...Objectives:Chinese medicine doctors have practiced in the United States since April of 1854,the world's first Chinese medicine doctor's memorial is Kam Wah Chung Museum in John Day,Oregon,U.S.,to commemorate Dr.Ing Hay(“Doc Hay”伍于念)and his business partner Lung On(梁光荣).There were few studies to explore Doc Hay's real practice and prescription,while most of papers focused on Doc Hay's legend life.This paper aims to analyze and interpret one of the intriguing herbal prescriptions that Doc Hay had hand-written.Materials and Methods:Dr.Arthur Yin Fan made an academic travel to Kam Wah Chung museum on August 5,2018 and examined the books and hand-written prescriptions of Doc Hay,which were not exhibited to the public at that time.This paper analyzes and interprets one of herbal prescriptions that Doc Hay had hand-written in 1907.Interpretation process included four steps:(1):Transform Doc Hay's hand-written prescription(with original herb names)to standard herb names in Chinese.(2):Induct and rearrange the herb name into groups based on herb property characteristics and then translate them into both PinYin names and English names.Analyzation of the prescription may include in what classic formula(s)routinely introduced in Chinese medicine textbooks.(3):Analyze the herbal action for each group and potential symptoms or conditions the patient may have had.An analysis of classic formula(s)used in the prescription may represent what clinical condition was being treated at that time.(4):Combine the analysis to give a comprehensive picture of the patient.Results:The prescription consists of 67 herbs,total 934.6 grams,and including Yin Qiao Powder(银翘散),Sang Ju Decoction(桑菊饮),Zhi Sou Powder(止嗽散),Qing Ying Decoction(清营汤),Xi Jiao Di Huang Decoction(犀角地黄汤),Long Dan Xie Gan Decoction(龙胆泻肝汤)and Chai Hu Shu Gan Powder(柴胡疏肝散).Speculation indicated that the prescription was for a patient who had obvious pulmonary infection accompanied by severe cough,and probably had prolonged pulmonary tuberculosis(TB)also with acute respiratory infection caused by other bacteria or viruses.Based on the analysis of composition of this prescription,it can be used for the treatment of epidemic diseases.Conclusion:The majority of herbs used in this prescription are commonly included in the herbal medicines in China used to effectively counter severe acute respiratory syndrome(SARS),H1N1 and currently COVID-19,it might be Doc Hay's basic formula for patients with“Spanish Flu”during the 1918-1920 pandemic.展开更多
[ Objective] To study the effects of combined application of different elements on alfalfa hay yield. [ Medthod] Potassium sulfate, ammonium chloride, superphosphate and magnesium oxide were applied to alfalfa field i...[ Objective] To study the effects of combined application of different elements on alfalfa hay yield. [ Medthod] Potassium sulfate, ammonium chloride, superphosphate and magnesium oxide were applied to alfalfa field in the experiment, and quaternary quadratic regression orthogonal combination was used to examine the effects of the experiment factors on hay yield of alfalfa. [ Result] The order of targets based on the effects on hay yield is as follows: potassium sulfate 〉 ammonium chloride 〉 magnesium oxide 〉 superphosphate. Among them, the potassium sulfate had a significant impact on alfalfa hay yield. The interaction between potassium sulfate and magnesium oxide also had a significant impact on alfalfa hay yield. [ Conclusion] The optimal cultivation measures for alfalfa hay yield of more than 19 224.6 kg/hm^2 are as follows: potassium sulfate, 163.253 - 181.679 kg/hm^2 ; ammonium chloride, 155.877 - 174.258 kg/hm^2 ; superphosphate, 566.177 - 632.924 kg/hm^2 ; and magnesium oxide, 30.060 - 33.628 kg/hm^2.展开更多
Fourteen samples of settled dust from two factories processing rice and wheat straw near Shanghai.China, were examined by dilution plating for total bacteria, gram-negative bacteria, thermophilic actinomycetes, and fu...Fourteen samples of settled dust from two factories processing rice and wheat straw near Shanghai.China, were examined by dilution plating for total bacteria, gram-negative bacteria, thermophilic actinomycetes, and fungi.They were also examined for atlatoxin endotoxin, and potential to stimulate production of human interleukin 1β (IL-1β) and to consume complement.The concentrations of total microorganisms were consistently greater than 10~7 CFU/g and ranged from 10~7 to 10~9 CFU/g.In general, the level of microbial contamination was greater in the hay dust samples than in the rice dust samples, with bacteria being the most numerous microorganisms observed followed by molds, thermophilic actinomycetes, and yeasts.The predominant fungi were species of Aspergillus, Cladosporium, Penicillium.Trichosporon, and Cryplococcus.No significant levels of aflatoxin were observed and the isolates of A.flavus examined lack significant aflatoxigenic potential.The levels of microorganisms in these samples, the types of organisms found, and the inflammatory mediators such as endotoxin suggest that workers exposed to these dusts may be at risk for respiratory illness. 1990 Academic Press.Inc.展开更多
The preliminary results of this laboratory (unpublished) indicate that the nutritional value of whole wheat hay (wheat hay, for short) is very high, and the milk stage is the best period of wheat hay harvest. In this ...The preliminary results of this laboratory (unpublished) indicate that the nutritional value of whole wheat hay (wheat hay, for short) is very high, and the milk stage is the best period of wheat hay harvest. In this study, we investigated the feeding effect and economic benefits using wheat hay instead of alfalfa diet for dairy cows under the condition of the same energy and crude protein levels. Three types of diets were used: alfalfa diet, wheat hay diet and alfalfa + wheat hay diet. The results showed that the dry matter digestibility of alfalfa diet and alfalfa + wheat hay diet did not differ significantly (P > 0.1), but was significantly higher than that of wheat hay diet (P < 0.05). The wheat hay diet could produce more propionic acid and ammonia nitrogen (P < 0.05) in the rumen, and reduce the ratio of acetic/propionic and nitrogen utilization. There was no significant difference in milk production among the three diets (P > 0.1). There was no significant difference in milk somatic cell count and body condition score among the three groups (P > 0.1). The wheat hay diet could significantly increase milk protein and lactose (P contents of interleukin-6 in cows fed alfalfa diet and alfalfa + wheat diet were significantly higher than that in cows fed wheat hay diet (P < 0.05). There was no significant difference in interleukinm-6 between in cows fed alfalfa diet and alfalfa + wheat diet (P > 0.05). The use of wheat hay to replace imported alfalfa in whole or in part could save feed costs. Full substitution of alfalfa with wheat hay could have a daily economic benefit of 13.74 yuan.展开更多
South-western Uganda annually experiences prolonged drought that results in dramatic drop in milk production of dairy cattle. This study was conducted to assess the nutritional value and economic benefits of feeding s...South-western Uganda annually experiences prolonged drought that results in dramatic drop in milk production of dairy cattle. This study was conducted to assess the nutritional value and economic benefits of feeding silage and hay to dairy cattle in the sub-region. The cross-sectional study covered seven districts with 105 farmers interviewed during the wet and 45 others in the dry season. Up to 88 soil samples were collected and analyzed for soil texture, soil pH, organic matter and total Nitrogen, Phosphorus, Potassium, Calcium, Sodium and Magnesium. Likewise, 148 forage (105 fresh, 25 silage and 18 hay) tissues from 21 pasture species were collected and analyzed for nutritional values. Using a questionnaire, data on production costs and milk revenues were collected for cost-benefit analysis. Results showed that silage of Napier grass treated with molasses (10.2 MJ/kg) and hay of naturally established pastures (10.6 MJ/kg) had the highest metabolisable energy (ME) values, while the lowest (8.30 MJ/kg) was for star grass. Hay of star grass presented the highest level of crude protein (21.4%) with maize (corn) showing the lowest (9.38%). Digestibility of hay of naturally established mixed pastures was the highest (64.4%), followed by that of silage of Napier grass treated with molasses (62.0%), while star grass hay had the lowest (52.6%). With exception of silage made from maize, all the other six forms of silage had a good crude protein (CP) content. Regardless of the good CP content (≥9.9%), all silage untreated with additives was poor in quality since its ME was less than 9.9 MJ ME/kg and ration digestibility less than 67%. Nonetheless, feeding of silage and hay increased milk yield and farm productivity with a benefit-cost ratio of 5.5 and 2.7 for silage and hay respectively.展开更多
The study of the effect of added quantity of the essential oil of Callistemon viminalis on the in vivo digestibility of Pennisetum clandestinum and some biochemical parameters on the West African Dwarf goat was conduc...The study of the effect of added quantity of the essential oil of Callistemon viminalis on the in vivo digestibility of Pennisetum clandestinum and some biochemical parameters on the West African Dwarf goat was conducted with nine old West African Dwarf goats. After the adaptation period, each animal received 900 and 100 g/day of Pennisetum clandestinum hay and concentrate respectively, associated with 0, 100 or 200 mg essential oil/kg of DM. The samples of 100 g of each ration, faeces and 10 ml of urine were collected and analyzed for chemical composition and the evaluation of ingestion and digestibility. Also blood samples were obtained from jugular vein of all goats after in vivo digestibility test for the dosage of biochemical parameters. The results of this study show that the ingestion of dry matter, organic matter and the fibers were significantly (p 0.05) higher on the goat with the ration FPc + HECv200. The digestibilities of these same components were equally higher with the ration FPc + HECv200 (71.00% and 69.00% respectively for the dry matter (DM) and organic matter (OM)). Retained (5.64 g/j) and digested (51.33) nitrogen were significantly (p 0.05) higher with the ration FPc + HECv200. The values of blood metabolites studied increased significantly (p 0.05) with added quantity of essential oil in the rations, except for albumin, globulin, glucose and the low-density lipoprotein (LDL). In general, the incorporation of essential oils of Callistemon viminalis in the ration improved ingestion, digestibility and biochemical parameters on the West African Dwarf goat.展开更多
The key objective of this article is to use the David Hay’s conception of spirituality in the vocational training of Information and Communication Technology (ICT) professionals. The purpose of this research is to ...The key objective of this article is to use the David Hay’s conception of spirituality in the vocational training of Information and Communication Technology (ICT) professionals. The purpose of this research is to investigate the connection between spirituality and vocational training of ICT professionals. The spirituality model founded by David Hay has been used in this research article which contains awareness sensing, mystery sensing, and value sensing. The paper has used qualitative methodology and instruments for data collection are biographical interview. Qualitative data have been analyzed by using Nvivo 11. Initial results show the preliminary picture of the role of spirituality in vocational training of ICT professionals.展开更多
The experiment was carried out at Mekelle University livestock farm, Tigray, Ethiopia. 12 male yearling Highland sheep with an average live weight of 20 + 2.5 kg (mean ± standard deviation) were used in the exper...The experiment was carried out at Mekelle University livestock farm, Tigray, Ethiopia. 12 male yearling Highland sheep with an average live weight of 20 + 2.5 kg (mean ± standard deviation) were used in the experiment. The objective of the study was to investigate the effect of digestibility of sheep ration containing different levels of roughage and concentrate mixture on performance of highland sheep. Food left over was collected from Mekelle University student cafeteria and dried with sun light for 3 - 4 days. The experimental design was a randomized complete Block design (RCBD) with four treatments and three replications. The experimental animals were grouped into three blocks based on their initial live body weight, which was determined by weighing after overnight fasting. The experiment was carried out for 15 days including 5 days of adaptation period and 3 days of adaptation and harnessing (fecal bags). At the end of the feeding trial, digestibility trial was carried out for seven consecutive days. There was significantly higher (P 0.05) total DM intake in the supplemented group than in the control treatment. Digestibility of DM and OM were non-significance (P > 0.05) for all treatments. Generally, the present study indicated that supplementation of Tigray highland rams with concentrate mixture had an effect on performance of sheep and the effects were relatively more pronounced on rams supplemented with the highest level of concentrate mixture.展开更多
This is a story about a Chinese herbalist Ing"Doc"Hay who combated the 1918-1919 influenza pandemic in the America West.As an immigrant,he came to the States as a laborer,but he had knowledge of Chinese herb...This is a story about a Chinese herbalist Ing"Doc"Hay who combated the 1918-1919 influenza pandemic in the America West.As an immigrant,he came to the States as a laborer,but he had knowledge of Chinese herbal medicine due to his family heritage.This made it possible for him to start practicing in the Chinese community in John Day,Oregon,until 1948 when he retired.During the time of the pandemic miming wild in the 1910s,he prescribed formulas aimed at flu and boiled herbal decoction,personally delivering it to a working site for those Chinese laborers as well as non-Chinese patients.None of the laborer patients treated by him died during this deadly pandemic.Due to his success and fame,his practice was booming even after the Chinese community disappeared in John Day in later years.Doc Hay is always remembered in the history of earlier development in eastern Oregon,so that the site of his practicing,Kam Wah Chung and Co.Building,is now a national historic landmark.And more importantly,he has also been remembered by Chinese herbal medicine practitioners in the United States.展开更多
hay 和 straw 都是“草”但它们之间是有区别的。hay 是专门为牲口种的饲料,straw 是指一般的稻草。美国建国初期还是一个以农业为主的国家。当时农民在夏天收割已经长高了的草,晒干入库,作为冬天喂牲口的饲料。及时做好这项工作是很重...hay 和 straw 都是“草”但它们之间是有区别的。hay 是专门为牲口种的饲料,straw 是指一般的稻草。美国建国初期还是一个以农业为主的国家。当时农民在夏天收割已经长高了的草,晒干入库,作为冬天喂牲口的饲料。及时做好这项工作是很重要的,因为干草淋湿了,就会发霉。俗语 to make hay while the sun shines 即源于此。美国人经常把这个俗语缩减成 to make hay。现在 to make hay 与准备饲料没有多大关系了,它的意思是“抓住时机,尽量从中获利”。例如:The smart thing is to buy as much stock as you can afford,if you want展开更多
Kenya has integrated several international, continental, and regional strategies and policies into its national and county programs to address climate-related disasters in livestock systems in pastoralism. This study ...Kenya has integrated several international, continental, and regional strategies and policies into its national and county programs to address climate-related disasters in livestock systems in pastoralism. This study reviews how these policy instruments have been integrated into local laws and the viability of hay production, a drought risk reduction strategy. The methodology used was a desktop review of policies, a KAP survey using a quantitative and qualitative questionnaire on 354 pastoralists and key informants selected using stratified random sampling, and a cost-benefit analysis of 23 hay farms in Kajiado-Central sub-county. The findings established that Kenya had adopted adequate legal instruments to support disasters in general and droughts specifically. However, the strategies are not elaborated into practical guidance resulting in poor implementation. For instance, the flagship hay production project in Kajiado focuses on building infrastructure on the government farms, with little support going to the actual hay farmers. In addition, staffing levels of technical officers are too low to adequately translate the strategies into activities that address the hay farmer’s pain points, namely the lack of a stable hay market, expensive capital assets and machinery, lack of quality forage seeds, and extension education. This paper recommends reviewing the implementation of the ongoing hay flagship projects to address the hay enterprise’s profitability and elaborating the strategies down to guidance that can be easily rolled out cognizant of the low staffing levels. Public-private partnerships can also address some challenges by stabilizing the hay markets, providing storage, and maintaining good-quality hay. In addition, the strategic feed reserve should include hay for pastoral livestock systems under drought risk reduction programs. Thus, targeted, relevant projects are critical if private hay enterprises are a sustainable drought risk reduction strategy.展开更多
Hay production is a flagship project under drought risk reduction and climate change adaptation programs in pastoralism livestock systems in Kenya. For decision-makers to plan and evaluate their projects, they need lo...Hay production is a flagship project under drought risk reduction and climate change adaptation programs in pastoralism livestock systems in Kenya. For decision-makers to plan and evaluate their projects, they need localized data on hay production and supply and to understand what attitudes influence demand for hay by pastoralists. A cost-benefit analysis on 23 hay farms and a questionnaire knowledge, attitude and practice survey on 340 pastoralists in Kajiado Central were undertaken. This study provides the hay production versus hay deficit figures in Kajiado Central County. The study also measures the financial losses livestock keepers incur during drought migration and correlates these losses against livestock keeper’s decision to buy hay for their animals. The study established that the drought in 2017, Kajiado Central County had a 48% hay deficit (2,580,000 hay bales) worth about KES 902 million needed to cover three months of the severest period of the drought. At the same time, hay production and supply were 49,138 grown hay and 3292 purchased hay bales and 6177 bags of commercial feeds and forage. The study also found that 86% of livestock keepers buy hay only when their animals started dying at the severest period of the drought. Hay buying mainly occurs in drought years, and averagely for three months only. From 2005 to 2020, there have been five years of severe drought. Because hay production is a critical climate change adaptation and mitigation strategy for droughts, Kajiado needs to reduce the hay deficit by 67% (average of 2015 & 2017), disaster management planners need to align the hay supply to hay purchasing practices. In addition, decision-makers need to address the low hay supply by tackling the challenges of hay production. Furthermore, disaster management planners could use the study to determine the trigger points to start disaster response for livestock feed.展开更多
文摘An environmentally friendly organic biosorbent was fabricated using hay by succinylation. Metallic cation adsorption tests were performed using synthetic nickel(Ⅱ) and cadmium(Ⅱ) solutions to simulate heavy-metal recovery from aqueous solution. The adsorption efficiency was greater than 98% for both cadmium and nickel ions when the biosorbent concentration was 5.0 g/L and the initial metal concentrations were 50 mg/L. The surface of the biosorbent was characterized using Fourier transform infrared spectroscopy to investigate the changes in the surface functional groups. The functional groups changed according to the surface treatment, resulting in an effective biosorbent. The kinetics of the metals adsorption revealed that the reactions are pseudo-second order, and the adsorption isotherm well followed the Langmuir model. The maximum adsorption capacities predicted by the Langmuir model were 75.19 mg/g and 57.77 mg/g for cadmium and nickel, respectively. The fabricated biosorbent was regenerated using Na Cl multiple times, with 2.1% for Cd and 4.0% for Ni in adsorption capacity after three regeneration cycles. The proposed biosorbent can be a good alternative to resin or other chemical adsorbents for heavy-metal recovery in metallurgical processing or municipal water treatment.
基金Projects(2013BAB07B03,2013BAC15B01)supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of ChinaProject(51264005)supported by the National Natural Science Foundation of China+1 种基金Project(Qiankehejz[2014]2009)supported by the Key Foundation of Science and Technology of Guizhou Province,ChinaProject([2013]019)supported by“125”Major Special Project of Guizhou Province,China
文摘Refined carbon(RC) derived from coal fly ash(CFA) as well as powdered activated carbon(PAC) was investigated as adsorbent to remove residual amine collector HAY from aqueous solution.The RC and PAC were characterized by scanning electron microscopy(SEM),surface area measurement,Zeta potential measurement and Fourier transform infrared(FTIR) spectroscopy.The effect factors and mechanisms of HAY adsorption onto RC and PAC were studied in detail.The results show that the experimental kinetic data agree well with the pseudo second-order equation,and the Langmuir isotherm model is found to be more appropriate to explicate the experimental equilibrium isotherm results than the Freundlich model.The adsorption capacities of PAC and RC increase with pH.It is found that alkaline condition is conducive to the adsorption of HAY onto PAC and RC and the adsorption efficiency of RC is close to PAC at pH near 11.Zeta potential variation of adsorbents suggests that HAY generates electrostatic adsorption onto RC and PAC.FTIR analysis shows that the adsorption is dominantly of a physical process.The Box-Behnken design optimization conditions of process are RC 1 g/L,pH 11,temperature 302 K and initial HAY concentration 100 mg/L.Under these conditions,the measured adsorption ratio and adsorption capacity are 87.91%and 87.91 mg/g,respectively.Thus,the RC is considered to be a potential adsorbent for the removal of residual amine from aqueous solution.
基金supported by the National Natural Science Foundation of China(81971515 and 81973290)CAMS Innovation Fund for Medical Sciences(2016-I2M-3-011 and 2016-I2M-1-003)+4 种基金the Beijing Key Laboratory of Non-Clinical Drug Metabolism and PK/PD study(Z141102004414062)the National Megaproject for Innovative Drugs(2018ZX09711001-002-002)Beijing Natural Sciences Fund Key Projects(7181007)the Fundamental Research Fund for Central Universities of Peking Union Medical College(3332020037)Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding Support(ZYLX201826)。
文摘Due to the worldwide epidemic of allergic disease and a cure nowhere in sight,there is a crucial need to explore its pathophysiological mechanisms.As allergic disease has been associated with gut dysbiosis,we searched for a possible mechanism from the perspective of the molecular interface between host and microbiota with concurrent metabolomics and microbiome composition analysis.Sprague-Dawley rats were injected with Artemisia pollen extract to stimulate a hyper reaction to pollen.This hyper reaction decreased the circulation of valine,isoleucine,aspartate,glutamate,glutamine,indole-propionate(IPA),and myo-inositol,and reduced short-chain fatty acids(SCFAs)in feces.Several beneficial genera belonging to Ruminococcaceae,Lachnospiraceae,and Clostridiales declined in the model group,whereas Helicobacter and Akkermansia were only expressed in the model group.Furthermore,the expression of intestinal claudin-3 and liver fatty acid binding protein was downregulated in the model group and associated with metabolic changes and bacteria.Our results suggest that alterations in amino acids as well as their derivatives(especially valine,and IPA which is the reductive product of tryptophan),SCFAs,and the gut microbiome(specifically Akkermansia and Helicobacter)may disrupt the intestinal barrier function by inhibiting the expression of claudin proteins and affecting the mucus layer,which further results in hay fever.
文摘This is a story about a Chinese herbalist Ing“Doc”Hay who combated the 1918–1919 influenza pandemic in the America West.As an immigrant,he came to the States as a laborer,but he had knowledge of Chinese herbal medicine due to his family heritage.This made it possible for him to start practicing in the Chinese community in John Day,Oregon,until 1948 when he retired.During the time of the pandemic running wild in the 1910s,he prescribed formulas aimed at flu and boiled herbal decoction,personally delivering it to a working site for those Chinese laborers as well as non‑Chinese patients.None of the laborer patients treated by him died during this deadly pandemic.Due to his success and fame,his practice was booming even after the Chinese community disappeared in John Day in later years.Doc Hay is always remembered in the history of earlier development in eastern Oregon,so that the site of his practicing,Kam Wah Chung and Co.Building,is now a national historic landmark.And more importantly,he has also been remembered by Chinese herbal medicine practitioners in the United States.
文摘Objectives:Chinese medicine doctors have practiced in the United States since April of 1854,the world's first Chinese medicine doctor's memorial is Kam Wah Chung Museum in John Day,Oregon,U.S.,to commemorate Dr.Ing Hay(“Doc Hay”伍于念)and his business partner Lung On(梁光荣).There were few studies to explore Doc Hay's real practice and prescription,while most of papers focused on Doc Hay's legend life.This paper aims to analyze and interpret one of the intriguing herbal prescriptions that Doc Hay had hand-written.Materials and Methods:Dr.Arthur Yin Fan made an academic travel to Kam Wah Chung museum on August 5,2018 and examined the books and hand-written prescriptions of Doc Hay,which were not exhibited to the public at that time.This paper analyzes and interprets one of herbal prescriptions that Doc Hay had hand-written in 1907.Interpretation process included four steps:(1):Transform Doc Hay's hand-written prescription(with original herb names)to standard herb names in Chinese.(2):Induct and rearrange the herb name into groups based on herb property characteristics and then translate them into both PinYin names and English names.Analyzation of the prescription may include in what classic formula(s)routinely introduced in Chinese medicine textbooks.(3):Analyze the herbal action for each group and potential symptoms or conditions the patient may have had.An analysis of classic formula(s)used in the prescription may represent what clinical condition was being treated at that time.(4):Combine the analysis to give a comprehensive picture of the patient.Results:The prescription consists of 67 herbs,total 934.6 grams,and including Yin Qiao Powder(银翘散),Sang Ju Decoction(桑菊饮),Zhi Sou Powder(止嗽散),Qing Ying Decoction(清营汤),Xi Jiao Di Huang Decoction(犀角地黄汤),Long Dan Xie Gan Decoction(龙胆泻肝汤)and Chai Hu Shu Gan Powder(柴胡疏肝散).Speculation indicated that the prescription was for a patient who had obvious pulmonary infection accompanied by severe cough,and probably had prolonged pulmonary tuberculosis(TB)also with acute respiratory infection caused by other bacteria or viruses.Based on the analysis of composition of this prescription,it can be used for the treatment of epidemic diseases.Conclusion:The majority of herbs used in this prescription are commonly included in the herbal medicines in China used to effectively counter severe acute respiratory syndrome(SARS),H1N1 and currently COVID-19,it might be Doc Hay's basic formula for patients with“Spanish Flu”during the 1918-1920 pandemic.
基金funded by the National Key Technology R&D Program (2006BAD04A10)the Major Scientific and Technological Innovation Projects of Hebei Province (07227146Z)the Earmarked Fund for Modern Agro-industry (Dairy Industry) Technology Research System (nycytx-10)
文摘[ Objective] To study the effects of combined application of different elements on alfalfa hay yield. [ Medthod] Potassium sulfate, ammonium chloride, superphosphate and magnesium oxide were applied to alfalfa field in the experiment, and quaternary quadratic regression orthogonal combination was used to examine the effects of the experiment factors on hay yield of alfalfa. [ Result] The order of targets based on the effects on hay yield is as follows: potassium sulfate 〉 ammonium chloride 〉 magnesium oxide 〉 superphosphate. Among them, the potassium sulfate had a significant impact on alfalfa hay yield. The interaction between potassium sulfate and magnesium oxide also had a significant impact on alfalfa hay yield. [ Conclusion] The optimal cultivation measures for alfalfa hay yield of more than 19 224.6 kg/hm^2 are as follows: potassium sulfate, 163.253 - 181.679 kg/hm^2 ; ammonium chloride, 155.877 - 174.258 kg/hm^2 ; superphosphate, 566.177 - 632.924 kg/hm^2 ; and magnesium oxide, 30.060 - 33.628 kg/hm^2.
文摘Fourteen samples of settled dust from two factories processing rice and wheat straw near Shanghai.China, were examined by dilution plating for total bacteria, gram-negative bacteria, thermophilic actinomycetes, and fungi.They were also examined for atlatoxin endotoxin, and potential to stimulate production of human interleukin 1β (IL-1β) and to consume complement.The concentrations of total microorganisms were consistently greater than 10~7 CFU/g and ranged from 10~7 to 10~9 CFU/g.In general, the level of microbial contamination was greater in the hay dust samples than in the rice dust samples, with bacteria being the most numerous microorganisms observed followed by molds, thermophilic actinomycetes, and yeasts.The predominant fungi were species of Aspergillus, Cladosporium, Penicillium.Trichosporon, and Cryplococcus.No significant levels of aflatoxin were observed and the isolates of A.flavus examined lack significant aflatoxigenic potential.The levels of microorganisms in these samples, the types of organisms found, and the inflammatory mediators such as endotoxin suggest that workers exposed to these dusts may be at risk for respiratory illness. 1990 Academic Press.Inc.
文摘The preliminary results of this laboratory (unpublished) indicate that the nutritional value of whole wheat hay (wheat hay, for short) is very high, and the milk stage is the best period of wheat hay harvest. In this study, we investigated the feeding effect and economic benefits using wheat hay instead of alfalfa diet for dairy cows under the condition of the same energy and crude protein levels. Three types of diets were used: alfalfa diet, wheat hay diet and alfalfa + wheat hay diet. The results showed that the dry matter digestibility of alfalfa diet and alfalfa + wheat hay diet did not differ significantly (P > 0.1), but was significantly higher than that of wheat hay diet (P < 0.05). The wheat hay diet could produce more propionic acid and ammonia nitrogen (P < 0.05) in the rumen, and reduce the ratio of acetic/propionic and nitrogen utilization. There was no significant difference in milk production among the three diets (P > 0.1). There was no significant difference in milk somatic cell count and body condition score among the three groups (P > 0.1). The wheat hay diet could significantly increase milk protein and lactose (P contents of interleukin-6 in cows fed alfalfa diet and alfalfa + wheat diet were significantly higher than that in cows fed wheat hay diet (P < 0.05). There was no significant difference in interleukinm-6 between in cows fed alfalfa diet and alfalfa + wheat diet (P > 0.05). The use of wheat hay to replace imported alfalfa in whole or in part could save feed costs. Full substitution of alfalfa with wheat hay could have a daily economic benefit of 13.74 yuan.
文摘South-western Uganda annually experiences prolonged drought that results in dramatic drop in milk production of dairy cattle. This study was conducted to assess the nutritional value and economic benefits of feeding silage and hay to dairy cattle in the sub-region. The cross-sectional study covered seven districts with 105 farmers interviewed during the wet and 45 others in the dry season. Up to 88 soil samples were collected and analyzed for soil texture, soil pH, organic matter and total Nitrogen, Phosphorus, Potassium, Calcium, Sodium and Magnesium. Likewise, 148 forage (105 fresh, 25 silage and 18 hay) tissues from 21 pasture species were collected and analyzed for nutritional values. Using a questionnaire, data on production costs and milk revenues were collected for cost-benefit analysis. Results showed that silage of Napier grass treated with molasses (10.2 MJ/kg) and hay of naturally established pastures (10.6 MJ/kg) had the highest metabolisable energy (ME) values, while the lowest (8.30 MJ/kg) was for star grass. Hay of star grass presented the highest level of crude protein (21.4%) with maize (corn) showing the lowest (9.38%). Digestibility of hay of naturally established mixed pastures was the highest (64.4%), followed by that of silage of Napier grass treated with molasses (62.0%), while star grass hay had the lowest (52.6%). With exception of silage made from maize, all the other six forms of silage had a good crude protein (CP) content. Regardless of the good CP content (≥9.9%), all silage untreated with additives was poor in quality since its ME was less than 9.9 MJ ME/kg and ration digestibility less than 67%. Nonetheless, feeding of silage and hay increased milk yield and farm productivity with a benefit-cost ratio of 5.5 and 2.7 for silage and hay respectively.
文摘The study of the effect of added quantity of the essential oil of Callistemon viminalis on the in vivo digestibility of Pennisetum clandestinum and some biochemical parameters on the West African Dwarf goat was conducted with nine old West African Dwarf goats. After the adaptation period, each animal received 900 and 100 g/day of Pennisetum clandestinum hay and concentrate respectively, associated with 0, 100 or 200 mg essential oil/kg of DM. The samples of 100 g of each ration, faeces and 10 ml of urine were collected and analyzed for chemical composition and the evaluation of ingestion and digestibility. Also blood samples were obtained from jugular vein of all goats after in vivo digestibility test for the dosage of biochemical parameters. The results of this study show that the ingestion of dry matter, organic matter and the fibers were significantly (p 0.05) higher on the goat with the ration FPc + HECv200. The digestibilities of these same components were equally higher with the ration FPc + HECv200 (71.00% and 69.00% respectively for the dry matter (DM) and organic matter (OM)). Retained (5.64 g/j) and digested (51.33) nitrogen were significantly (p 0.05) higher with the ration FPc + HECv200. The values of blood metabolites studied increased significantly (p 0.05) with added quantity of essential oil in the rations, except for albumin, globulin, glucose and the low-density lipoprotein (LDL). In general, the incorporation of essential oils of Callistemon viminalis in the ration improved ingestion, digestibility and biochemical parameters on the West African Dwarf goat.
文摘The key objective of this article is to use the David Hay’s conception of spirituality in the vocational training of Information and Communication Technology (ICT) professionals. The purpose of this research is to investigate the connection between spirituality and vocational training of ICT professionals. The spirituality model founded by David Hay has been used in this research article which contains awareness sensing, mystery sensing, and value sensing. The paper has used qualitative methodology and instruments for data collection are biographical interview. Qualitative data have been analyzed by using Nvivo 11. Initial results show the preliminary picture of the role of spirituality in vocational training of ICT professionals.
文摘The experiment was carried out at Mekelle University livestock farm, Tigray, Ethiopia. 12 male yearling Highland sheep with an average live weight of 20 + 2.5 kg (mean ± standard deviation) were used in the experiment. The objective of the study was to investigate the effect of digestibility of sheep ration containing different levels of roughage and concentrate mixture on performance of highland sheep. Food left over was collected from Mekelle University student cafeteria and dried with sun light for 3 - 4 days. The experimental design was a randomized complete Block design (RCBD) with four treatments and three replications. The experimental animals were grouped into three blocks based on their initial live body weight, which was determined by weighing after overnight fasting. The experiment was carried out for 15 days including 5 days of adaptation period and 3 days of adaptation and harnessing (fecal bags). At the end of the feeding trial, digestibility trial was carried out for seven consecutive days. There was significantly higher (P 0.05) total DM intake in the supplemented group than in the control treatment. Digestibility of DM and OM were non-significance (P > 0.05) for all treatments. Generally, the present study indicated that supplementation of Tigray highland rams with concentrate mixture had an effect on performance of sheep and the effects were relatively more pronounced on rams supplemented with the highest level of concentrate mixture.
文摘This is a story about a Chinese herbalist Ing"Doc"Hay who combated the 1918-1919 influenza pandemic in the America West.As an immigrant,he came to the States as a laborer,but he had knowledge of Chinese herbal medicine due to his family heritage.This made it possible for him to start practicing in the Chinese community in John Day,Oregon,until 1948 when he retired.During the time of the pandemic miming wild in the 1910s,he prescribed formulas aimed at flu and boiled herbal decoction,personally delivering it to a working site for those Chinese laborers as well as non-Chinese patients.None of the laborer patients treated by him died during this deadly pandemic.Due to his success and fame,his practice was booming even after the Chinese community disappeared in John Day in later years.Doc Hay is always remembered in the history of earlier development in eastern Oregon,so that the site of his practicing,Kam Wah Chung and Co.Building,is now a national historic landmark.And more importantly,he has also been remembered by Chinese herbal medicine practitioners in the United States.
文摘hay 和 straw 都是“草”但它们之间是有区别的。hay 是专门为牲口种的饲料,straw 是指一般的稻草。美国建国初期还是一个以农业为主的国家。当时农民在夏天收割已经长高了的草,晒干入库,作为冬天喂牲口的饲料。及时做好这项工作是很重要的,因为干草淋湿了,就会发霉。俗语 to make hay while the sun shines 即源于此。美国人经常把这个俗语缩减成 to make hay。现在 to make hay 与准备饲料没有多大关系了,它的意思是“抓住时机,尽量从中获利”。例如:The smart thing is to buy as much stock as you can afford,if you want
文摘Kenya has integrated several international, continental, and regional strategies and policies into its national and county programs to address climate-related disasters in livestock systems in pastoralism. This study reviews how these policy instruments have been integrated into local laws and the viability of hay production, a drought risk reduction strategy. The methodology used was a desktop review of policies, a KAP survey using a quantitative and qualitative questionnaire on 354 pastoralists and key informants selected using stratified random sampling, and a cost-benefit analysis of 23 hay farms in Kajiado-Central sub-county. The findings established that Kenya had adopted adequate legal instruments to support disasters in general and droughts specifically. However, the strategies are not elaborated into practical guidance resulting in poor implementation. For instance, the flagship hay production project in Kajiado focuses on building infrastructure on the government farms, with little support going to the actual hay farmers. In addition, staffing levels of technical officers are too low to adequately translate the strategies into activities that address the hay farmer’s pain points, namely the lack of a stable hay market, expensive capital assets and machinery, lack of quality forage seeds, and extension education. This paper recommends reviewing the implementation of the ongoing hay flagship projects to address the hay enterprise’s profitability and elaborating the strategies down to guidance that can be easily rolled out cognizant of the low staffing levels. Public-private partnerships can also address some challenges by stabilizing the hay markets, providing storage, and maintaining good-quality hay. In addition, the strategic feed reserve should include hay for pastoral livestock systems under drought risk reduction programs. Thus, targeted, relevant projects are critical if private hay enterprises are a sustainable drought risk reduction strategy.
文摘Hay production is a flagship project under drought risk reduction and climate change adaptation programs in pastoralism livestock systems in Kenya. For decision-makers to plan and evaluate their projects, they need localized data on hay production and supply and to understand what attitudes influence demand for hay by pastoralists. A cost-benefit analysis on 23 hay farms and a questionnaire knowledge, attitude and practice survey on 340 pastoralists in Kajiado Central were undertaken. This study provides the hay production versus hay deficit figures in Kajiado Central County. The study also measures the financial losses livestock keepers incur during drought migration and correlates these losses against livestock keeper’s decision to buy hay for their animals. The study established that the drought in 2017, Kajiado Central County had a 48% hay deficit (2,580,000 hay bales) worth about KES 902 million needed to cover three months of the severest period of the drought. At the same time, hay production and supply were 49,138 grown hay and 3292 purchased hay bales and 6177 bags of commercial feeds and forage. The study also found that 86% of livestock keepers buy hay only when their animals started dying at the severest period of the drought. Hay buying mainly occurs in drought years, and averagely for three months only. From 2005 to 2020, there have been five years of severe drought. Because hay production is a critical climate change adaptation and mitigation strategy for droughts, Kajiado needs to reduce the hay deficit by 67% (average of 2015 & 2017), disaster management planners need to align the hay supply to hay purchasing practices. In addition, decision-makers need to address the low hay supply by tackling the challenges of hay production. Furthermore, disaster management planners could use the study to determine the trigger points to start disaster response for livestock feed.