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Review of Two Years of Surgical Activities of the General Surgery Department of the Reference Health Center of Commune I of Bamako Mali
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作者 Tounkara Cheickna Cisse Amadou Beydi +5 位作者 Samake Hamidou Diarra Issaka Sanogo Modibo Diarra Bogoba Doumbia Seydou Yena Sadio 《Surgical Science》 2024年第4期195-206,共12页
The objectives of this work were to evaluate the surgical activities carried out in the general surgery department of the Reference Health Center of Commune I of Bamako, to describe the sociodemographic characteristic... The objectives of this work were to evaluate the surgical activities carried out in the general surgery department of the Reference Health Center of Commune I of Bamako, to describe the sociodemographic characteristics of the operated patients, to determine the main pathologies encountered and to evaluate qualitatively the result of the treatment. In order to improve performance, and the quality of care, and to identify common pathologies in the surgical department, we undertook a retrospective study on surgical activities from January 2009 to December 2010. At the end of this study, out of 474 men and 187 women (equal sex ratio 2.53);we were able to determine the frequency of surgical pathologies. Farmers, housewives and pupils/students were the most represented with 25.9% respectively;20% and 13.3%. The most frequently observed pathologies were wall hernia (44.8%), prostate adenoma (12%) and acute appendicitis (10.5%). The average length of hospitalization was 3.43 days. Infectious complications affected 25 patients (3.8% of cases) and a death rate of 0.45% (i.e. 3 patients). The average cost of care was 53,500 FCFA. Indeed, the reality of surgical practice in health centers was not the same because of the level of skills of practicing surgeons. 展开更多
关键词 Assessment Surgical Activities 2 Years Reference Health Center of commune I BAMAKO
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莲腐败病菌多聚半乳糖醛酸酶Fcpg1基因功能研究
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作者 叶丽芳 宋水林 +3 位作者 张连虎 林桠春 崔汝强 况卫刚 《江西农业大学学报》 CAS CSCD 北大核心 2024年第1期77-85,共9页
【目的】共享镰刀菌(Fusarium commune)侵染莲引起的莲腐败病严重影响莲的生产,鉴定莲腐败病菌中多聚半乳糖醛酸酶基因Fcpg1,分析其在生长发育及致病过程中的作用,为进一步研究共享镰刀菌的致病机理及莲腐败病菌的防治提供依据。【方法... 【目的】共享镰刀菌(Fusarium commune)侵染莲引起的莲腐败病严重影响莲的生产,鉴定莲腐败病菌中多聚半乳糖醛酸酶基因Fcpg1,分析其在生长发育及致病过程中的作用,为进一步研究共享镰刀菌的致病机理及莲腐败病菌的防治提供依据。【方法】利用BLASTP在莲腐败病菌全基因组数据中查找PG同源蛋白,并使用ExPASy等在线软件对Fcpg1氨基酸序列进行生物信息学分析。通过基因敲除的方法,获得Fcpg1基因敲除突变体ΔFcpg1和回补菌株ΔFcpg1-Com。测定野生型菌株FCN23、突变体ΔFcpg1和回补菌株ΔFcpg1-Com的菌落形态、生长速率、产孢量及致病力。【结果】Fcpg1基因编码388个氨基酸,分子量为40.354 ku,分子式为C_(1756)H_(2775)N_(489)O_(577)S_(12),理论等电点为6.57,脂溶系数为79.9。Fcpg1为稳定的、易溶于水的外泌性蛋白,其信号肽剪切位点在第16~17个氨基酸,主要定位于胞外基质。Fcpg1蛋白与尖孢镰刀菌的多聚半乳糖醛酸酶蛋白序列具有较高的同源性。与野生型菌株FCN23和回补菌株ΔFcpg1-Com相比,ΔFcpg1突变体的菌落形态、营养生长和产孢量等方面均无明显差异,但突变体ΔFcpg1的致病力显著减弱。【结论】Fcpg1是典型的多聚半乳糖醛酸酶蛋白,参与对莲腐败病致病力的调控。 展开更多
关键词 Fusarium commune 基因敲除 多聚半乳糖醛酸酶 表型 致病力
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Chemical profile of the secondary metabolites produced by a deep-sea sediment-derived fungus Penicillium commune SD-118 被引量:8
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作者 尚卓 李晓明 +4 位作者 孟莉 李春顺 高书山 黄才国 王斌贵 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2012年第2期305-314,共10页
Bioassay-guided fractionation of the crude extract from Penicillium commune SD-118, a fungus obtained from a deep-sea sediment sample, resulted in the isolation of a known antibacterial compound, xanthocillin X (1), a... Bioassay-guided fractionation of the crude extract from Penicillium commune SD-118, a fungus obtained from a deep-sea sediment sample, resulted in the isolation of a known antibacterial compound, xanthocillin X (1), and 14 other known compounds comprising three steroids (2-4), two ceramides (5 and 6), six aromatic compounds (7-12), and three alkaloids (13-15). Xanthocillin X (1) was isolated for the first time from a marine fungus. In the bioassay, xanthocillin X (1) displayed remarkable antimicrobial activity against Staphylococcus aureus and Escherichia coli, and significant cytotoxicity against MCF-7, HepG2, H460, Hela, Du145, and MDA-MB-231 cell lines. Meleagrin (15) exhibited cytotoxicity against HepG2, Hela, Du145, and MDA-MB-231 cell lines. This is the first report of the cytotoxicity of xanthocillin X (1). 展开更多
关键词 bioguided isolation deep-sea sediment-derived fungus Penicillium commune xanthocillin X antibacterial activity CYTOTOXICITY
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Effects of Lanthanum on Liquid Culture and Contents of Amino Acids ofNostoc Commune Flagelliforme Cells 被引量:3
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作者 刘世名 梁世中 《Journal of Rare Earths》 SCIE EI CAS CSCD 1999年第4期298-302,共5页
The effects of La(NO3)(3) on the liquid culture and the contents of amino acids of Nostoc commune flagelliforme cells were studied. It is indicated from the experimental results that the growth of Nostoc commune flage... The effects of La(NO3)(3) on the liquid culture and the contents of amino acids of Nostoc commune flagelliforme cells were studied. It is indicated from the experimental results that the growth of Nostoc commune flagelliforme cells can be stimulated by La(NO3)(3) at the concentrations from 1 to 200 mg.L-1, and among them the treatment of 100 mg.L-1 La(NO3)(3) has the largest A(670) and dry weight which increased by 64.9% and 61.1%, respectively as compared with the control, and La(NO3)(3) can also influence the contents of some kinds of amino acids in Nostoc commune flagelliforme cells. The contents of aspartic acid and glutamic acid decreased by 59.9% and 57.9%, respectively, and that of proline increased by 24.5% with the treatment of 200 mg.L-1 La(NO3)(3). 展开更多
关键词 rare earths lanthanum nitrate Nostoc commune flagelliforme cells amino acids
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Purification and characterization of schizophyllan from Schizophyllum commune
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作者 Hao Limin Zhang Jianchun +5 位作者 Wu Tianyi Zhang Jian Lu Jike Wang Qizhi Zhang Xiaojuan Xing Xinhui 《Engineering Sciences》 EI 2013年第2期88-92,共5页
The schizophyllan from Schizophyllum commune was purified and characterized. The crude schizo-phyllan was obtained from Schizophyllum commune fermentation broth by decoloration with activated carbon,followed by deprot... The schizophyllan from Schizophyllum commune was purified and characterized. The crude schizo-phyllan was obtained from Schizophyllum commune fermentation broth by decoloration with activated carbon,followed by deproteinization with Sevag method and ethanol precipitation. The pure schizophyllan was obtained by gel filtration chromatography with Sephacryl S-500,and its molecular characteristics were examined. The result showed that the molecular weight was 3.8×104 ,and the schizophyllan consisted of glucose with β-(1→6)-glucosidic linkages. 展开更多
关键词 SCHIZOPHYLLAN Schizophyllum commune PURIFICATION CHARACTERIZATION
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Artificial Induction of Labor with Misoprostol: Maternal and Fetal Prognosis at the Referral Health Center of Commune I of the District of Bamako
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作者 Mamadou Bakary Coulibaly Alassane Traoré +5 位作者 Mody Abdoulaye Camara Mamadou Sima Bourama Kané Kalba Tembiné Ibrahima Tégueté Youssouf Traoré 《Open Journal of Obstetrics and Gynecology》 2021年第2期70-79,共10页
Artificial induction of labor (AIL) is the set of techniques intended to induce childbirth in order to reduce maternal-fetal mortality. The aim of this paper was to study the maternal and fetal prognosis after the art... Artificial induction of labor (AIL) is the set of techniques intended to induce childbirth in order to reduce maternal-fetal mortality. The aim of this paper was to study the maternal and fetal prognosis after the artificial induction of labor with misoprostol. It was a descriptive prospective study conducted from September 1, 2018 to February 28, 2019 at the maternity unit of the Referral Health Center (RHC) in commune I of Bamako. It was about any pregnant woman at term who had received misoprostol as part of the artificial induction of labor. 102 cases of artificial induction with misoprostol 200 μg were collected out of 3641 deliveries, or a frequency of 2.8%. The age group 28 - 32 years accounted for 56.86% with an average age of 28.8 years. Multiparous represented 54.90% of the number. The history of diabetes and hypertension involved 37.25% of the pregnant women. The main indication was premature rupture of membranes (PRM) (40.2%). Induction was performed between the 37</span><sup><span style="font-family:Verdana;">th</span></sup><span style="font-family:Verdana;"> and 41</span><sup><span style="font-family:Verdana;">st</span></sup><span style="font-family:Verdana;"> week of amenorrhea (69.6%). The trigger index according to BISHOP was greater than 7 (50.98%). Induction was done only with 3/4 of misoprostol tablet 200 μg (43.14%). The average labor time was 7 hours (89.22%). The vaginal birth concerned 92.16% of pregnant women. An APGAR10 was noted in 97.85% of newborns after 05 minutes. AIL with misoprostol was practiced at the Center. The main indication was the premature rupture of the membranes. It improves the maternal and fetal prognosis. 展开更多
关键词 Induction MISOPROSTOL Maternal and Fetal Prognosis commune I
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Efficiency Assessment of Land Use Types in Tan Binh Commune,Dak Doa District,Gia Lai Province,Vietnam
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作者 Buinhat HUNG Qingsheng HAO +5 位作者 Nguyenminh THANH Nguyenthi LINH Levan CUONG Nguyenthibich PHUONG Levan LONG Meiqi ZHANG 《Asian Agricultural Research》 2020年第10期29-34,共6页
Land resource depletion causes a range of consequences,such as threats to food security,increasing poverty,and social unrest.Therefore,reasonable and effective land use has become a crucial issue of the nation and loc... Land resource depletion causes a range of consequences,such as threats to food security,increasing poverty,and social unrest.Therefore,reasonable and effective land use has become a crucial issue of the nation and localities nationwide.Research results in Tan Binh commune,Dak Doa district,Gia Lai Province in Vietnam showed that long-term industrial and agricultural land occupies most of the commune's agroforestry land.The study also had shown that there are six common land use types(LUTs)in the commune.In particular,the LUT of pepper cultivation had the highest economic benefit,whereas the LUT of coffee brought the highest social benefit.However,the LUT of chayote was the highest in overall benefits with Ect of 0.93;thus,this LUT should be widely applied throughout Tan Binh commune.The research results were a crucial scientific basis for proposing a group of suitable plants to local natural conditions to bring effective and sustainable efficiency in land-use types. 展开更多
关键词 Land use type(LUT) Efficiency assessment Benefit Crop cultivation Tan Binh commune of Vietnam
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Knowledge of Health Workers in Public Health Centers of the Health District of LoméCommune on Dengue
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作者 Lidaw Deassoua Bawe Akouda Akessiwe Patassi +4 位作者 Awereou Kotosso Bawoubadi Abaltou Abdou-Razak Moukaïla Dosseh Dandogan Majeste Ihou Wateba 《Advances in Infectious Diseases》 2021年第4期430-440,共11页
<strong>Background:</strong> Dengue is under-reported in the indicators and directories of health statistics in Togo and the diagnostic hypothesis of dengue during medical consultations is often not mentio... <strong>Background:</strong> Dengue is under-reported in the indicators and directories of health statistics in Togo and the diagnostic hypothesis of dengue during medical consultations is often not mentioned. <strong>Objective:</strong> The objective is to assess healthcare workers’ knowledge of dengue and its management in public health centers in the health district of Lomé Commune. <strong>Materials and Methods: </strong>This is a cross-sectional and descriptive study that took place from November 1, 2019 to February 29, 2020 in the health district of Lomé Commune. <strong>Results: </strong>This study involved 280 healthcare workers out of 310 concerned, <em>i.e.</em>, a participation rate of 90.32%, distributed over the 22 public health centers of the health district of Lomé Commune. The age of the healthcare workers ranged from 18 to 58 years with an average age of 33 years (±8.14). The age group [25 - 35 years] was more represented with 53.20%. Physicians were more represented with 46.07%. The majority of healthcare professionals were aware of the existence of dengue (90.36%). The essential clinical signs were more or less known, especially by the physicians. Dengue hemorrhagic fever was the most known clinical form and represented 70%. Treatment was symptomatic according to the majority (63.21%) and was based on analgesics (71.43%) and antipyretics (65%). The existence of a vaccine is not well known and represented 16.79%;the use of impregnated mosquito net is more cited as a secondary means of prevention, 77.86%. <strong>Conclusion: </strong>Dengue is not well known by the health professionals involved in the survey. Nevertheless, physicians have a more or less good knowledge compared to paramedics. In practice, the diagnosis of dengue is often not mentioned. 展开更多
关键词 DENGUE KNOWLEDGE Healthcare Worker Lomé commune TOGO
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Accumulation Characteristics of Some Elements in the Moss Polytrichum commune(Bryophytes)Based on XRF Spectrometry
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作者 Rudolf Soltes Eva Greguskova 《Journal of Environmental Protection》 2013年第6期522-528,共7页
Bryophytes are broadly used as bioindicators. However, the internal distribution of accumulated elements in the moss tissue is little known. Sampling was carried out in The West Carpathians, Slovakia, in autumn 2012. ... Bryophytes are broadly used as bioindicators. However, the internal distribution of accumulated elements in the moss tissue is little known. Sampling was carried out in The West Carpathians, Slovakia, in autumn 2012. Seven replicates have been used. The samples were analyzed by XRF Spectrometer Delta Classic. S, Pb, K, Ca, Cr, Mn, Fe, Cu, Rb, Sr, Mo, Ba and Zn were determined. For ordination analysis we used principal component analysis, statistical graphics system STATISTICA have been used for the correlation analysis and for analysis of variance. Results show that sulphur, zinc, chromium, manganese, molybdenum, kalcium and copper are preferentially accumulated in the capsula. While lead favors gametophyte, potassium and strontium prefer accumulation in sporophyte. Iron significantly accumulates in the more-year segments, while zinc in the stems. Copper, chromium and sulphur are accumulated preferentially in The Fatra Mts. 展开更多
关键词 BIOINDICATION Polytrichum commune The West Carpathians Elemental Accumulation XRF Spectrometry
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Combining ectomycorrhizal fungi and plant growth-promoting rhizobacteria to enhance salt tolerance of Metasequoia glyptostroboides
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作者 Weiliang Kong Xiuqian Xu +2 位作者 Zhenqian Li Yahui Wang Xiaoqin Wu 《Journal of Forestry Research》 SCIE CAS CSCD 2023年第5期1603-1614,共12页
Plant growth and productivity are negatively affected by soil salinity.This study investigated the effects of the rhizosphere-promoting bacterium,Bacillus paramycoides JYZ-SD5,and the ectomycorrhizal fungus,Schizophyl... Plant growth and productivity are negatively affected by soil salinity.This study investigated the effects of the rhizosphere-promoting bacterium,Bacillus paramycoides JYZ-SD5,and the ectomycorrhizal fungus,Schizophyllum commune Be,on the growth of Metasequoia glyptostroboides under salt stress.Changes in biomass,root growth,root ion distribution and in vivo enzyme activities were determined under different treatments(Be,JYZ-SD5,and Be+JYZ-SD5).The results show that all inoculations increased chlorophyll content,shoot length and root diameter with or without salt stress,and the effect of Be+JYZ-SD5was the strongest.JYZ-SD5 and Be+JYZ-SD5 treatments significantly increased root length,surface area,bifurcation number,tip number,main root length and diameter under salt stress.Normal chloroplast structures developed under both single and double inoculations.Relative to the control,root activities of M.glyptostroboides in the Be,JYZSD5,and Be+JYZ-SD5 treatments increased by 31.3%,17.2%,and 33.7%.All treatments increased the activities of superoxide dismutase(SOD),peroxidase(POD),Na^(+)-K^(+)-ATPase and Ca^(2+)-Mg^(2+)-ATPase.The strongest effect was by Be+JYZ-SD5.Analysis of root ion distribution showed that,under salt stress,Na^(+)and K^(+)decreased and were concentrated in the epidermis or cortex.Na/K ratios also decreased.The Be+JYZ-SD5 treatment increased betaine by 130.3%and 97.9%under 50 mM and 100 mM salt stress,respectively.Together,these changes result in the activation of physiological and biochemical processes involved in the mitigation of salinity-induced stress in M.glyptostroboides. 展开更多
关键词 Bacillus paramycoides Schizophyllum commune Metasequoia glyptostroboides Salt stress Plant growth
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一种新的豇豆根腐病病原菌鉴定及室内药剂筛选 被引量:15
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作者 张河庆 席亚东 +3 位作者 陈玲 向娟 韩帅 吴婕 《植物保护》 CAS CSCD 北大核心 2018年第2期177-183,共7页
本文对四川成都发生的豇豆根腐病病原菌进行鉴定,为豇豆根腐病的药剂防治提供依据。采集了成都市豇豆种植区豇豆根腐病病株,经常规组织分离并纯化获得116株分离菌株,对分离菌株进行致病性测定、形态学鉴定及rDNA-ITS序列分析。结果表明... 本文对四川成都发生的豇豆根腐病病原菌进行鉴定,为豇豆根腐病的药剂防治提供依据。采集了成都市豇豆种植区豇豆根腐病病株,经常规组织分离并纯化获得116株分离菌株,对分离菌株进行致病性测定、形态学鉴定及rDNA-ITS序列分析。结果表明,分离到的镰孢菌中有10株为Fusarium commune,分离频率为8.62%。对该10株菌进行致病性测定,均为致病菌株;其中MW4-11菌株致病性最强。该致病菌株的最适生长温度为25~30℃,菌丝致死温度为70℃。选用7种杀菌剂通过平皿培养法对MW4-11菌株进行室内毒力测定。结果表明,75%肟菌·戊唑醇水分散粒剂对该致病菌株的毒性最强,EC50为0.030μg/mL。 展开更多
关键词 豇豆 根腐病 镰孢菌 FUSARIUM commune
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地木耳提取物水溶液对花卉营养生长及开花的影响 被引量:6
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作者 王弋博 李三相 +4 位作者 施文甫 廖红 张海林 李勃 杨亚军 《西北植物学报》 CAS CSCD 2004年第2期311-315,共5页
在温室条件下,用1%的地木耳提取物水溶液对瓜叶菊(Seneciocruentus)、万寿菊(Tageteserecta)、矮牵牛(Petuniahybrida)、香石竹(Dianthuscaryophyllus)、一品红(Euphorbiapulcherrima)、仙客来(Cyclamenpersium)、一串红(Salviasplende... 在温室条件下,用1%的地木耳提取物水溶液对瓜叶菊(Seneciocruentus)、万寿菊(Tageteserecta)、矮牵牛(Petuniahybrida)、香石竹(Dianthuscaryophyllus)、一品红(Euphorbiapulcherrima)、仙客来(Cyclamenpersium)、一串红(Salviasplendens)等7种花坛花进行叶面喷施后,结果表明,7种花的株高、冠径、株鲜重、叶片数目、叶长、根长比对照均有显著增加(P<0.05);万寿菊,矮牵牛,一品红,一串红的平均株干重有显著增加,而瓜叶菊,香石竹,仙客来的平均株干重增加不显著(P>0.05);除了香石竹的叶宽有显著增加外,其余6种花的叶宽对1%地木耳提取物水溶液的反应不敏感;而7种花卉的叶厚都没有显著的变化。提取物水溶液还可促进花提早开花,增加花数目,并延长花期。 展开更多
关键词 地木耳(Nostoc commune) 提取物水溶液 营养生长 开花
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不同地区地木耳多糖红外光谱与抗氧化活性研究 被引量:9
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作者 刁毅 刘涛 韩洪波 《湖北农业科学》 2016年第4期984-987,996,共5页
为了研究不同地区地木耳(Nostoc commune Vauch.)多糖的结构与体外抗氧化活性,用苯酚-硫酸法测定地木耳多糖含量,用傅里叶变换红外光谱法分析多糖结构,用清除DPPH自由基法、清除超氧阴离子法、清除羟基自由基法测定不同地区地木耳多糖... 为了研究不同地区地木耳(Nostoc commune Vauch.)多糖的结构与体外抗氧化活性,用苯酚-硫酸法测定地木耳多糖含量,用傅里叶变换红外光谱法分析多糖结构,用清除DPPH自由基法、清除超氧阴离子法、清除羟基自由基法测定不同地区地木耳多糖体外抗氧化活性。结果表明,不同地区地木耳多糖含量有差异,蓬溪和名山地木耳多糖含量高于南部地木耳多糖,含量分别为(18.29%±0.21%)和(17.18%±0.17%)。不同地木耳多糖红外光谱峰形、位置相似,但峰强有差异。地木耳多糖对DPPH自由基、超氧阴离子、羟基自由基具有较强的清除能力;地木耳多糖抗氧化活性比地木耳提取液强,但比维生素C弱;随着浓度增加,地木耳多糖抗氧化活力增强;蓬溪和名山地木耳多糖抗氧化活性强于南部地木耳多糖抗氧化活性。由此说明,不同地区地木耳多糖含量与其组成有差异,不同地区地木耳多糖抗氧化活性差异大。 展开更多
关键词 地木耳(Nostoc commune Vauch.) 多糖 傅里叶变换红外光谱 抗氧化活性
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地木耳乙醇提取物的抑菌机理及化妆品功效研究
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作者 孙茜 张赟 +4 位作者 汤云峰 刘康欣 陈雪茹 金卫华 唐红枫 《湖北农业科学》 2021年第11期107-111,114,共6页
采用醇提取法对地木耳(Nostoc commune Vauch)活性成分进行提取,以地木耳乙醇提取物与大肠杆菌作用前后细菌培养液的电导率、可溶性总糖和总蛋白质浓度变化,探究地木耳乙醇提取物对大肠杆菌的抑菌机理,对配制出的化妆品,进行了稳定性、... 采用醇提取法对地木耳(Nostoc commune Vauch)活性成分进行提取,以地木耳乙醇提取物与大肠杆菌作用前后细菌培养液的电导率、可溶性总糖和总蛋白质浓度变化,探究地木耳乙醇提取物对大肠杆菌的抑菌机理,对配制出的化妆品,进行了稳定性、安全性、保湿、美白等测试。结果表明,在经过地木耳乙醇提取物处理后,大肠杆菌培养液的电导率、可溶性总糖和总蛋白质浓度均有不同程度的升高。配制的化妆品安全性、稳定性良好,且具一定的美白、保湿性。地木耳乙醇提取物可使大肠杆菌细胞膜发生破损,所开发的化妆品细腻温和、质地稳定均一、安全无毒副作用,并具有美白、保湿等功效。 展开更多
关键词 地木耳(Nostoc commune Vauch) 乙醇提取物 抑菌性 化妆品
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不同环境因子对深圳海滨地木耳生长和多糖特性的影响
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作者 聂磊 杨小东 +1 位作者 廖宝林 韩婧 《湖北农业科学》 2018年第9期58-61,共4页
采用正交试验分析了不同环境条件对念珠藻地木耳(Nostoc commune Vauch)生物量和多糖分泌的影响。结果表明,在适宜的温度、光强、盐度和UV-B处理对地木耳的生长、胞外多糖分泌及其抗氧化能力有明显的促进作用。培养条件为光照强度100μm... 采用正交试验分析了不同环境条件对念珠藻地木耳(Nostoc commune Vauch)生物量和多糖分泌的影响。结果表明,在适宜的温度、光强、盐度和UV-B处理对地木耳的生长、胞外多糖分泌及其抗氧化能力有明显的促进作用。培养条件为光照强度100μmol/(m2·s)、温度30℃、Na Cl浓度0 mmol/L和UVB辐射强度10 k J/(m2·d)时,地木耳有最大的相对生长率;光照强度200μmol/(m2·s)、温度35℃、Na Cl浓度40 mmol/L和UV-B辐射强度20 k J/(m2·d)时,胞外多糖的分泌强度最高,温度和UV-B处理分别对相对生长率和胞外多糖含量的提高有显著效果。 展开更多
关键词 地木耳(Nostoc commune Vauch) 生长 胞外多糖 环境因子
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果蔗根腐病病原菌分离鉴定及生物学特性分析 被引量:2
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作者 任庆肖 张金旭 +3 位作者 王继华 徐世强 姚伟 张木清 《山东农业科学》 北大核心 2022年第7期135-142,共8页
近年来广东省果蔗区根腐病病情连年加重,造成大面积减产,已经成为制约果蔗产业可持续健康发展的关键因素之一。为明确果蔗根腐病的病原菌种类及发病特点,本试验于广州果蔗种植区采集根腐病发病样品,采用传统组织分离法对样品进行病原菌... 近年来广东省果蔗区根腐病病情连年加重,造成大面积减产,已经成为制约果蔗产业可持续健康发展的关键因素之一。为明确果蔗根腐病的病原菌种类及发病特点,本试验于广州果蔗种植区采集根腐病发病样品,采用传统组织分离法对样品进行病原菌分离,并对分离菌株进行形态学观察、分子生物学鉴定和致病性测定。结果表明,共分离27株菌,利用扫描电子显微镜、光学显微镜进行形态学观察,发现6株与镰刀菌形态特征相似的菌株。使用SDS法提取DNA,采用ITS1和ITS4、EF1和EF2引物进行扩增,结果显示供试菌株与Fusarium commune(共享镰刀菌)处于同一分支,因此将该6株分离菌株鉴定为F.commune。通过柯赫氏法则验证,初步确定F.commune为广州果蔗根腐病的病原菌,其中gx4-46菌株接种果蔗根系后的发病率高达79.96%,显著高于其他菌株。对强致病性菌株gx4-46的生物学特性进行初步分析,发现LA培养基为病原菌的最适培养基,24℃为该菌株菌丝生长的最适温度,pH=7最适合病原菌的生长。本研究对引起果蔗根腐病的病原菌进行鉴定并分析了其生物学特征,为果蔗根腐病的防治及病原菌的研究奠定了基础。 展开更多
关键词 果蔗根腐病 Fusarium commune(共享镰刀菌) 分离与鉴定 生物学特性
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Selenium Content and Antioxidant Potential of Some Edible Wild Mushrooms from Bandundu Area, DR Congo 被引量:2
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作者 Marina Kisuba Kabuyi Paulin Mutwale Kapepula +9 位作者 Jimmy Kabeya Kabengele Bénédicte Moni Gisèle Makengo Patricia Mbombo Mungitshi Adam Tujibikila Mukuta Clement Mbadiko Mutunda Simon Dibaluka Mpulusu Jean Paul Koto-Te-Nyiwa Ngbolua Nadège Ngombe Kabamba Théophile Mbemba Fundu 《Natural Resources》 2017年第2期103-113,共11页
Nutrition is an important aspect of public health because it is linked to many significant diseases and health problems. This work is part of the promotion of traditional foods from the Democratic Republic of Congo in... Nutrition is an important aspect of public health because it is linked to many significant diseases and health problems. This work is part of the promotion of traditional foods from the Democratic Republic of Congo in general and in the province of Bandundu, in particular by assessing the selenium content and the antioxidant capacity of wild edible mushrooms. Methanolic extracts from selected mushrooms were characterized for their chemical fingerprint by TLC and their in vitro antioxidant activities using ABTS, DPPH assays. Phytochemical screening revealed the presence of alkaloids, free amines, steroids and terpenes in all species. However, Auricularia delicata and Pleurotus tuberregium contain flavonoids. All extracts displayed a good radical-scavenging activity at the concentration range 1 - 300 μg/mL in the following order: Auricularia delicata > Lentinus cf cladopus > Pleurotus tuberregium > Marasmius buzungolo > Schizophillum commune. Studied mushrooms showed the interest quantity of selenium and L. cf cladodus had the highest concentration. Moderate selenium content of these wild mushrooms associated with their important antioxidant activities could provide health benefits to Bandundu’s populations in protecting against oxidative damage under different conditions including konzo. 展开更多
关键词 Antioxidant Activity AURICULARIA delicata Lentinus cf cladopus Marasmius buzungolo PLEUROTUS tuberregium SCHIZOPHYLLUM commune Selenium Traditional Food
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Effects of Ethanol Addition and Biological Pretreatment on Soda Pulping of Eulaliopsis binata 被引量:1
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作者 Archana Gautam Amit Kumar Dharm Dutt 《Journal of Biomaterials and Nanobiotechnology》 2016年第2期78-90,共13页
Morphological characteristics and proximate chemical analysis of E. binata showed it as a suitable raw material for writing and printing grade paper. Maximum pulp yield (43.58%) of kappa number 17.38 with 0.9% screeni... Morphological characteristics and proximate chemical analysis of E. binata showed it as a suitable raw material for writing and printing grade paper. Maximum pulp yield (43.58%) of kappa number 17.38 with 0.9% screening rejects was obtained at 12% of active alkali (as Na2O) pulping temperature 130&degC, cooking time 120 min and solid to liquor ratio 1:4. During bio-soda pulping of E. binata, pulp yield decreased slightly while pulp brightness, tensile index, burst index and double fold numbers were improved by 4.1%, 24.94%, 14.03% and 48.45% respectively compared to soda pulping. During ethanol-soda pulping of E. binata, pulp yield, pulp brightness, tensile index, burst index and double fold numbers were improved by 3.9%, 6.6%, 32.18%, 35.40% and 77.31% respectively compared to soda pulping. 展开更多
关键词 Ethanol-Soda Pulping BIO-PULPING Eulaliopsis binata Schizophyllum commune Fibre Morphology
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"Contracting Output Quotas to Households Under Unified Management": The Responsibility System in the Xiaotan People’s Commune
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作者 张雨林 杨承训 郭西萍 《Social Sciences in China》 1983年第2期7-,121-145+237-238,共28页
is an investigative report on 'contracting output quotas to households under unified management' as a form of the system of job responsibility in agricultural production being implemented in various accounting... is an investigative report on 'contracting output quotas to households under unified management' as a form of the system of job responsibility in agricultural production being implemented in various accounting units of people’s communes. Actually, this form is a synthesis of unified collective management and decentralized management by individual commune member households, on the basis of collective ownership of the means of production. According to our survey, the productive forces within each accounting unit are multileveled; so much so that neither completely unified collective management, nor completely decentralized management by commune member households is suitable for the productive forces’ conditions. Nor is the exclusive use of either form of management conducive to the most effective promotion of agricultural production and the development of a diversified economy. Only a combination of the two can bring into play the productive forces of both the collective and the commune member households and mobilize the initiative of each. 展开更多
关键词 unified decentralized COLLECTIVE productive commune ACCOUNTING agricultural EXCLUSIVE manual FARMLAND
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Descriptions of two new record species of Scutellonema (Nematoda:Tylenchida) from China
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作者 Hong-Yu TIAN Xiao-Feng ZHU +1 位作者 Yu-Xi DUAN Li-Jie CHEN 《Zoological Research》 CAS CSCD 北大核心 2014年第1期72-74,共3页
From 2011 to 2012, we collected Scutellonema commune from the rhizosphere soil of coconut (cocos nucifera L.) and Scutellonema magniphasma from the rhizosphere soil of Rosa chinensis in Shenyang, China. S. commune w... From 2011 to 2012, we collected Scutellonema commune from the rhizosphere soil of coconut (cocos nucifera L.) and Scutellonema magniphasma from the rhizosphere soil of Rosa chinensis in Shenyang, China. S. commune was characterized by rounded scutella, which was varied from two annules anterior to the anus and five annules posterior. The lateral field was not areolated at the level of scutella. S. magniphasma was characterized by varying scutellum, about 7.0 μm in diameter, in position from four annules posterior to four annules anterior to the anus, and areolated at the level of the scutellum. 展开更多
关键词 Hoplolaimidae new record species Scutellonema commune Scutellonema magniphasma
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