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Study on the effect of four kinds of raw materials in hypertonic dehydration cell model
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作者 Yuanyuan Gao Qidan Tan +3 位作者 Chencan Cao Haifeng Chen Yuying Jia Lei Liu 《日用化学工业(中英文)》 CAS 北大核心 2024年第10期1218-1226,共9页
It aims to investigate the protective effects of sodium hyaluronate,panthenol,Portulaca oleracea L.and Calendula officinalis L.on hyperosmotic dehydration-induced injury of human immortalized keratinocytes(HaCaT).The ... It aims to investigate the protective effects of sodium hyaluronate,panthenol,Portulaca oleracea L.and Calendula officinalis L.on hyperosmotic dehydration-induced injury of human immortalized keratinocytes(HaCaT).The safety mass concentrations of four raw materials were screened by detecting cell viability,and the secretion of hyaluronic acid(HA)was determined using the ELISA method.The expression of HaCaT barrier function related genes(OVOL1,EREG,TGM1,TGM2,IVL,IRF6,THBS1,CASP14)was detected at the mRNA level to explore the regulatory effect of four raw materials on these genes.The results demonstrate that pretreatment with the four kinds of raw materials could increase the cell viability after hyperosmotic dehydration,promote the secretion of HA,and improve the expression of barrier function related genes after hyperosmotic dehydration,among which panthenol and Calendula officinalis L.are better.The results show that the four raw materials have a certain protective effect on the hyperosmotic dehydration cell model,which provides data support for its application in cosmetics. 展开更多
关键词 hypertonic dehydration cell model protective effect barrier repair efficacy evaluation of cosmetics soothing ingredients
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The Protective Role of Xanthophyll Cycle in Resurrection Angiosperm Boea hygrometrica During Dehydration and Rehydration 被引量:4
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作者 阳文龙 胡志昂 +2 位作者 王洪新 单际修 匡廷云 《Acta Botanica Sinica》 CSCD 2003年第3期307-310,共4页
The protective role of xanthophyll cycle in resurrection angiosperm Boea hygrometrica (Bunge) R.Br. was investigated by analysis of the changes of chlorophyll fluorescence and xanthophyll cycle components in response ... The protective role of xanthophyll cycle in resurrection angiosperm Boea hygrometrica (Bunge) R.Br. was investigated by analysis of the changes of chlorophyll fluorescence and xanthophyll cycle components in response to dehydration and rehydration in detached leaves under very weak light condition (3 mumol photons.m(-2).s(-1)) and in the dark. With declines in the values of PSII photochemical efficiency (Fv/Fm), PSII actual quantum yield (Phi(PSII)), photochemical quenching (qP) and non-photochemical quenching (NPQ) during dehydration, zeaxanthin significantly increased in control Boea leaves under very weak light condition, while no zeaxanthin accumulation was detected in Boea leaves treated with dithiothreitol (DTT) and Boea leaves in the dark, and after 3 d rehydration, the parameters Fv/Fm, Phi(PSII), qP and NPQ showed full recovery in control Boea leaves under very weak light condition, but the parameters only underwent partial recovery in Boea leaves treated with DTT and Boea leaves in the dark, suggesting that the recovery of photosystem II (PSII) photochemical activities in Boea leaves was obviously affected by treatments with DTT and darkness, therefore, zeaxanthin may play an important protective role in desiccated Boea leaves even under very weak light conditions. 展开更多
关键词 chlorophyll fluorescence DESICCATION resurrection angiosperm xanthophyllcycle
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Anti-tumor Effect and Protective Effect on Chemotherapeutic Damage of Water Soluble Extracts from Hedyotis diffusa 被引量:24
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作者 李瑞 赵浩如 林以宁 《Journal of Chinese Pharmaceutical Sciences》 CAS 2002年第2期54-58,共5页
Bai-Hua-She-She-Cao Hedyotis diffusa Willd. (Ru-biaceae) is a medicinal herbwidely distributed in northeast Asian countries. In traditional Chinese medicine, it has the effectof 'clearing away heat and toxic mater... Bai-Hua-She-She-Cao Hedyotis diffusa Willd. (Ru-biaceae) is a medicinal herbwidely distributed in northeast Asian countries. In traditional Chinese medicine, it has the effectof 'clearing away heat and toxic material, promoting blood circulation and removing blood stasis'.It is a well known Chinese folk-medicine used for the treatment of appendicitis, sore throat, mumps,acne, sebo-rheic dermatitis and various kinds of tumors, such as tumors of digestive tract,carcinoma of liver. It was reported that the MeOH extract of H. diffusa demonstrated a significantantitumor activity and ursolic acid succeeded in being isolated from the MeOH extract as an activecomponent . Shan BN, et al suggested that the direct aqueous extract of H. diffusa hadimmuno-modulating activity and antitumor activity in vitro through stimulating the immune system tokill or engulf tumor cells. But regarding anti-tumor activity in vivo of water soluble extracts fromH. diffusa, no detail was reported. Therefore, we prepared water soluble extracts (H_1 and H_2)from H. diffusa and evaluated their anti-tumor property in vivo experiments as well as protectiveeffect on chemo-therapeutic damage. 展开更多
关键词 hedyotis diffusa water soluble extracts ANTI-TUMOR CHEMOTHERAPY
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大绿豆
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作者 尹秋育 《中国水土保持》 北大核心 1993年第10期32-32,共1页
大绿豆(Phaseolus aureua Roxb Var.)又名四季绿豆、印尼绿豆,从印尼传入我国。1988年,鲁山水保站从浙江金华农校牧草研究所引进优质大绿豆,种植于土层只有十几厘米厚的风化片麻岩丘陵区获得成功。试验表明,它具有抗旱、耐涝、耐瘠、适... 大绿豆(Phaseolus aureua Roxb Var.)又名四季绿豆、印尼绿豆,从印尼传入我国。1988年,鲁山水保站从浙江金华农校牧草研究所引进优质大绿豆,种植于土层只有十几厘米厚的风化片麻岩丘陵区获得成功。试验表明,它具有抗旱、耐涝、耐瘠、适应性广、再生力强、高产、优质等特点,既是饲肥兼优的豆科绿肥牧草,也是保持水土的优良植物之一。 展开更多
关键词 大绿豆 水保作用 豆科牧草 饲用价值
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The Suitability of Using Leaf Area Index to Quantify Soil Loss under Vegetation Cover 被引量:7
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作者 ZHANG Wentai YU Dongsheng +4 位作者 SHI Xuezheng WANG Hongjie GU Zhujun ZHANG Xiangyan TAN Manzhi 《Journal of Mountain Science》 SCIE CSCD 2011年第4期564-570,共7页
Soil erosion by water under forest cover is a serious problem in southern China.A comparative study was carried out on the use of leaf area index(LAI) and vegetation fractional coverage(VFC) in quantifying soil loss u... Soil erosion by water under forest cover is a serious problem in southern China.A comparative study was carried out on the use of leaf area index(LAI) and vegetation fractional coverage(VFC) in quantifying soil loss under vegetation cover.Five types of vegetation with varied LAI and VFC under field conditions were exposed to two rainfall rates(40 mm h-1 and 54 mm h-1) using a portable rainfall simulator.Runoff rate,sediment concentration and soil loss rate were measured at relatively runoff stable state.Significant negative exponential relationship(p < 0.05,R2 = 0.83) and linear relationship(p < 0.05,R2 = 0.84) were obtained between LAI and sediment concentration,while no significant relationship existed between VFC and sediment concentration.The mechanism by which vegetation canopy prevents soil loss was by reducing rainfall kinetic energy and sediment concentration.LAI could better quantify such a role than VFC.However,neither LAI nor VFC could explain runoff rate or soil loss rate.Caution must be taken when using LAI to quantify the role of certain vegetation in soil and water conservation. 展开更多
关键词 Leaf area index(LAI) Runoff steady state Sediment concentration Simulated rainfall
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Protective effects of electroacupuncture on acetylsalicylic acid-induced acute gastritis in rats 被引量:7
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作者 Hye Suk Hwang Kyung-Ju Han +7 位作者 Yeon Hee Ryu Eun Jin Yang Yoo Sung Kim Sang Yong Jeong Young-Seop Lee Myeong Soo Lee Sung Tae Koo Sun-Mi Choi 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第8期973-977,共5页
AIM: To investigate the protective effects of electroacupuncture (EA) pretreatment on acetylsalicylic acid (ASA)-induced ulceration in rats. METHODS: We randomly divided 72 rats into three groups including control (ad... AIM: To investigate the protective effects of electroacupuncture (EA) pretreatment on acetylsalicylic acid (ASA)-induced ulceration in rats. METHODS: We randomly divided 72 rats into three groups including control (administered with distilled water), ASA group (administered 100 mg/kg ASA) and EA group (administered EA + 100 mg/kg ASA). Each rat was fasted for 18 to 24 h before experimentation, and lesion scores, gastric acidity, cyclooxygenase (COX)-1 and -2 mRNA levels, and total nitric oxide (NO) concentration were measured. RESULTS: The lesion scores of the EA group were significantly lower than those of the ASA group. Gastric acidity of the ASA and EA groups was reduced compared to the control group. COX-1 and -2 mRNA levels were significantly increased in the EA group as compared to the control and ASA groups, and NO levels were also significantly increased in the EA group as compared to the ASA group. CONCLUSION: These results suggest that EA-mediated protection against ASA-induced ulceration in rats may occur via gastric defense components. 展开更多
关键词 ELECTROACUPUNCTURE Acute gastritis CYCLOOXYGENASE Nitric Oxide
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Potential Role of Feldspathic Sandstone as a Natural Water Retaining Agent in Mu Us Sandy Land,Northwest China 被引量:52
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作者 HAN Jichang XIE Jiancang ZHANG Yang 《Chinese Geographical Science》 SCIE CSCD 2012年第5期550-555,共6页
This paper analyzed the water-retention mechanism of feldspathic sandstone (fine-(〈 1 mm diam.) and gravel-sized (2-3 cm diam.) in Mu Us Sandy Land, Northwest China. The objective of this study is to study the e... This paper analyzed the water-retention mechanism of feldspathic sandstone (fine-(〈 1 mm diam.) and gravel-sized (2-3 cm diam.) in Mu Us Sandy Land, Northwest China. The objective of this study is to study the effect of feldspathic sandstone amendment on water retention in sandy land. The results showed that as the proportion of fine feldspathic sandstone in the sandy land soil increased, the soil texture changed from sand to silt loam, the capillary po- rosity gradually increased from 26.3% to 44.9%, and the soil saturated hydraulic conductivity decreased from 7.10 ram/rain to 0.07 mm/min. Feldspathic sandstone gravel formed micro-reservoirs in the sandy land soil, playing the role of a 'water absorbent' and 'water retaining agent' in sandy land. Amendment with feldspathic sandstone can increase water retention in the arable layer of sandy land by 67%. This study provides a theoretical basis for the amelioration of sandy land on a large scale. It can be concluded that amendment with feldspathic sandstone can improve the physical properties of sandy land soil and increase soil water retention. 展开更多
关键词 feldspathic sandstone sandy land soil water retaining agent Mu Us Sandy Land soil saturatd hydraulicconductivity
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Aqueous suspension of anise “Pimpinella anisum” protects rats against chemically induced gastric ulcers 被引量:7
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作者 Ibrahim A Al Mofleh Abdulqader A Alhaider +2 位作者 Jaber S Mossa Mohammed O Al-Soohaibani Syed Rafatullah 《World Journal of Gastroenterology》 SCIE CAS CSCD 2007年第7期1112-1118,共7页
AIM: To substantiate the claims of Unani and Arabian traditional medicine practitioners on the gastroprotective potential effect of a popular spice anise, "Pimpinella anisum L." on experimentally-induced gastric ul... AIM: To substantiate the claims of Unani and Arabian traditional medicine practitioners on the gastroprotective potential effect of a popular spice anise, "Pimpinella anisum L." on experimentally-induced gastric ulceration and secretion in rats. METHODS: Acute gastric ulceration in rats was produced by various noxious chemicals including 80% ethanol, 0.2 mol/L NaOH, 25% NaCI and indomethacin. Anti-secretory studies were undertaken using pylorusligated Shay rat technique. Levels of gastric non-protein sulfhydryls (NP-SH) and wall mucus were estimated and gastric tissue was also examined histologically. Anise aqueous suspension was used in two doses (250 and 500 mg/kg body weight) in all experiments. RESULTS: Anise significantly inhibited gastric mu- cosal damage induced by necrotizing agents and indomethacin. The anti-ulcer effect was further confirmed histologically. In pylorus-ligated Shay rats, anise suspension significantly reduced the basal gastric acid secretion, acidity and completely inhibited the rumenal ulceration. On the other hand, the suspension significantly replenished ethanol-induced depleted levels of gastric mucosal NP-SH and gastric wall mucus concentration. CONCLUSION: Anise aqueous suspension possesses significant cytoprotective and anti-ulcer activities against experimentallynduced gastric lesions. The anti-ulcer effect of anise is possibly prostaglandin-mediated and/orthrough its anti-secretory and antioxidative properties. 展开更多
关键词 SPICE Anise Pimpinella anisum Cytopro-tection Gastric ulcer Gastric secretion Sulfhydryls Gastric wall mucus
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Mechanisms and assessment of water eutrophication 被引量:23
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作者 Xiao-e YANGt Xiang WU +1 位作者 Hu-lin HAO Zhen-li HE 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2008年第3期197-209,共13页
Water eutrophication has become a worldwide environmental problem in recent years,and understanding the mechanisms of water eutrophication will help for prevention and remediation of water eutrophication.In this paper... Water eutrophication has become a worldwide environmental problem in recent years,and understanding the mechanisms of water eutrophication will help for prevention and remediation of water eutrophication.In this paper,recent advances in current status and major mechanisms of water eutrophication,assessment and evaluation criteria,and the influencing factors were reviewed.Water eutrophication in lakes,reservoirs,estuaries and rivers is widespread all over the world and the severity is increasing,especially in the developing countries like China.The assessment of water eutrophication has been advanced from simple individual parameters like total phosphorus,total nitrogen,etc.,to comprehensive indexes like total nutrient status index.The major influencing factors on water eutrophication include nutrient enrichment,hydrodynamics,environmental factors such as temperature,salinity,carbon dioxide,element balance,etc.,and microbial and biodiversity.The occurrence of water eutrophication is actually a complex function of all the possible influencing factors.The mechanisms of algal blooming are not fully understood and need to be further investigated. 展开更多
关键词 Eutrophication mechanisms Influencing factors Nutrient enrichment Assessment criterion Water quality
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Protection of ultrastructure in chilling-stressed banana leaves by salicylic acid 被引量:5
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作者 KANG Guo-zhang WANG Zheng-xun +1 位作者 XIA Kuai-fei SUN Gu-chou 《Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)》 SCIE CAS CSCD 2007年第4期277-282,共6页
Objective: Chilling tolerance of salicylic acid (SA) in banana seedlings (Musa acuminata cv., Williams 8818) was investigated by changes in ultrastructure in this study. Methods: Light and electron microscope ob... Objective: Chilling tolerance of salicylic acid (SA) in banana seedlings (Musa acuminata cv., Williams 8818) was investigated by changes in ultrastructure in this study. Methods: Light and electron microscope observation. Results: Pretreatment with 0.5 mmol/L SA under normal growth conditions (30/22 ℃) by foliar spray and root irrigation resulted in many changes in ultrastructure of banana cells, such as cells separation from palisade parenchymas, the appearance of crevices in cell walls, the swelling of grana and stromal thylakoids, and a reduction in the number of starch granules. These results implied that SA treatment at 30/22 ℃ could be a type of stress. During 3 d of exposure to 7 ℃ chilling stress under low light, however, cell ultrastructure of SA-pretreated banana seedlings showed less deterioration than those of control seedlings (distilled water-pretreated). Conclusion: SA could provide some protection for cell structure of chilling-stressed banana seedling. 展开更多
关键词 Banana (Musa acuminata cv. Williams 8818) Chilling tolerance Salicylic acid ULTRASTRUCTURE
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Groundwater protection from cadmium contamination by permeable reactive barrier in Qian'an of Jilin,China 被引量:2
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作者 Alkali Mohammed 《Global Geology》 2008年第4期197-202,共6页
This research studies the reliability of an activated carbon permeable reactive barrier in removing cadmium from a contaminated shallow aquifer.Laboratory tests have been performed to characterize the equilibrium and ... This research studies the reliability of an activated carbon permeable reactive barrier in removing cadmium from a contaminated shallow aquifer.Laboratory tests have been performed to characterize the equilibrium and kinetic adsorption properties of the activated carbon in cadmium-containing aqueous solutions.A 2D numerical model has been used to describe pollutant transport within a groundwater and the pollutant adsorption on the permeable reactive barrier(PRB).In particular,it has been considered the case of a PAB used to protect a lake or downstream from Cd(II)contaminated groundwater.Numerical results show that the PAB can achieve a long-term efficiency by preventing lake or downstream pollution for several months. 展开更多
关键词 Qian'an County CADMIUM ADSORPTION PRB GROUNDWATER numerical simulation
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Effects of soil and water conservation and its interactions with soil properties on soil productivity 被引量:2
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作者 郭旺 李忠武 +7 位作者 申卫平 王晓燕 曾光明 陈晓琳 张雪 张越男 刘桂平 王曙光 《Journal of Central South University》 SCIE EI CAS 2012年第8期2279-2285,共7页
The effects of soil and water conservation (SWC) on soil properties are well documented. However, definitive and quantitative information of SWC and its interactions with soil properties on soil productivity is lack... The effects of soil and water conservation (SWC) on soil properties are well documented. However, definitive and quantitative information of SWC and its interactions with soil properties on soil productivity is lacking for hilly red soil region of southern China. Experiments were conducted in the hilly red soil region of southern China for seven years in three rtmoffplots, each of which represented different SWC forest-grass measures. Principal component analysis and multiple regression techniques were used to relate the aboveground biomass (representing soil productivity) to soil properties. Based on the final regression equations, soil organic carbon content (Sot) is significantly correlated with soil productivity under the condition of forest-grass measures, whereas pH value and cation exchange capacity (Cee) are the main factors for soil productivity without SWC. Therefore, SWC plays an important role in sequestering Soc and improving soil productivity. 展开更多
关键词 hilly red soil region soil erosion soil organic carbon soil productivity
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Corn Leaf Water Retention as Affected by OrganicFertilizations and Effective Microbes Applications
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作者 XU HUILIAN N. AJIKI +1 位作者 WANG XIAOJU C. SAKAKIBARA and H. UMEMURA (International Nature Farming Research Center, Hata-machi, Nagano 390-14 (Japan)) 《Pedosphere》 SCIE CAS CSCD 1998年第1期1-8,共8页
Effects of organic fertilizers and effective microbes on leaf water retention of sweet corn (Zea mays L. cv.Honey-Bantam) were studied. Sweet corns were grown with organic or chemical fertilizers with or without effec... Effects of organic fertilizers and effective microbes on leaf water retention of sweet corn (Zea mays L. cv.Honey-Bantam) were studied. Sweet corns were grown with organic or chemical fertilizers with or without effective microbes (EM). A water retention curve was obtained by drying the excised leaves under a light of 500 μmol (m2·s)-1. The curve shows two distinct phases. The initial steep slope indicates the water loss speed by stomatal transpiration (Est) and the gentle slope of the second phase indicates water loss speed by cuticular transpiration (Ecu). Both Est and Ecu were lower for leaves of plants grown with organic materials than for those with chemical fertilizers. Addition of EM to both organic and chemical fertilizers decreased Est but showed no effect on Ecu. The water retention ability of the excised leaves was proportional to photosynthetic maintenance ability under soil water deficit conditions as well as the solute concentration in leaves. The results suggested that organic fertilization and EM application increased water stress resistance both under in situ conditions and in excised leaves of sweet corn plants. 展开更多
关键词 cuticular transpiration effective microorganism organic fertilizer water stress Zea mays
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Influence of Ozone Injection on Corrosion Behavior of Steel in Water Ballast Tank
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作者 Ryuji Kojima Michiaki Ikai +1 位作者 Jinsun Liao Yoichi Mori 《Journal of Shipping and Ocean Engineering》 2014年第11期327-337,共11页
Ozone is the principal active substances and usually employed in ballast water management systems. In the present study, the corrosion protective effect of ozone was conducted by immersion test and electrochemical tec... Ozone is the principal active substances and usually employed in ballast water management systems. In the present study, the corrosion protective effect of ozone was conducted by immersion test and electrochemical techniques. It was found that corrosion protective effect was revealed in the range of 2.0 to 2.7 ppm of ozone concentration in seawater. The ratio of the rust area of specimen became 20% in that concentration region. The rusted area is strongly influenced by the ozone concentration and the flow rate determined by FEM (finite element method). Ozone has a good influence for ballast tanks, i.e., ozone can delay the rust of ballast tanks, provided that the suitable concentration of ozone is selected. In this case, ozone may stop the corrosion at the defects, if a part of the paint in ballast tank is peeled off. However, ozone may also promote the corrosion of steel when the ozone concentration is very high, e.g., 10 ppm. Attention should be paid to the ozone concentration, if we use ozone as an active substance for ballast water management systems. 展开更多
关键词 OZONE corrosion protective effect water ballast tank coating film electrochemical measurement FEM analysis.
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