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Systematic study in Cressa cretica L. (Convolvulaceae) species from Lake Qarun, El-Fayoum province, Egypt 埃及法尤姆省Qarun湖山葵属植物的系统研究
Pub Date : 2023-09-30 DOI: 10.53771/ijlsra.2023.5.1.0085
None Wafaa Kamal Taia, None Amany Mohamed Abd El-Maged
Cressa cretica L. is a monotypic species belongs to the plant family Convolvulaceae, tribe Cresseae. It is an erect, small, dwarf shrub, commonly grown in coastal areas and considered as an important medicinal plant with many therapeutic effects. Individuals of this species became restricted in specific areas in Egypt in became under threat of extinction. This study dealt with careful examination of the external and leaf internal structure beside pollen grain morphology. The study aims to understand the species morphological characteristics and protect it from localization and destruction processes. The results showed that the leaf macro- and micro-morphological characters are of the halophytic ones, with long unicellular hairs as well as T-shaped hairs and sunken stomata. The leaf internal structure has mesophyll differentiated into one layer palisade and spongy layers full of ca-oxalate crystals and salt glands distributed in the mesophyll. Pollen grains productivity was few and they are small, spheroidal to subprolate with tricolporate aperture and tectate perforate with supra-tectum granules. The results obtained show that Cressa cretica has external and internal halophytic structure in addition to few small pollen grains. Germination experiments needed to test the pollen productivity of this plant under non-saline habitats for its conservation.
Cressa cretica L.是一种单型植物,属于植物科旋花科,cresaceae族。它是一种直立的小矮灌木,通常生长在沿海地区,被认为是一种重要的药用植物,具有许多治疗作用。这个物种的个体在埃及的特定地区受到限制,并受到灭绝的威胁。本研究除了花粉粒形态外,还仔细检查了叶片的外部和内部结构。该研究旨在了解该物种的形态特征,并保护其免受本地化和破坏过程的影响。结果表明:叶的大微形态特征为盐生叶,单细胞毛长,毛呈t形,气孔凹陷;叶片内部叶肉分化为单层栅栏和海绵状层,叶肉中分布着丰富的草酸钙晶体和盐腺。花粉粒产量少,体积小,球型至近长形,有三孔孔,有盖上孔。结果表明,Cressa cretica除了少量的小花粉粒外,还具有内外盐生结构。为了保护该植物,需要进行萌发试验来测试该植物在无盐生境下的花粉产量。
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引用次数: 0
https://sciresjournals.com/ijlsra/content/levels-total-aflatoxins-maize-and-groundnuts-across-food-value-chains-gender-and-agro https://sciresjournals.com/ijlsra/content/levels-total-aflatoxins-maize-and-groundnuts-across-food-value-chains-gender-and-agro
Pub Date : 2023-08-30 DOI: 10.53771/ijlsra.2023.5.1.0081
Samuel Mwesige, Florence Tushabe, Thomas Okoth, Ivan Kasamba, David Areu
Maize and groundnuts are traditional nutrient-rich and high economic value foods grown in Uganda. However, these crops are susceptible to aflatoxin contamination which may result into aflatoxicosis related illnesses. Occurrence of flatoxins in the foods varies across food value chains, gender and agro-ecological zones of Uganda. Therefore, we conducted a cross-sectional study in 80 maize and groundnut foodstuff from Masindi and Soroti agro-ecological districts respectively. We determined levels of total aflatoxins in maize and groundnut samples across food value chains, gender and agro-ecological zones. This was aimed at assessing safety and quality status of the foods in Uganda. Questionnaires were administered to obtain information on food handling practices. 500g of each food sample were obtained and analyzed for total aflatoxin levels using ELISA assay. Data was analyzed using descriptive and analytical statistics. In overall, 45% of maize and 30% of groundnut foods were contaminated with aflatoxins. Mean aflatoxin levels in foods from Eastern and Western agro-ecological zones were 0.052±0.036ppb and 0.045±0.033ppb respectively (p=0.124). Mean aflatoxin levels in groundnuts from both male and female respondents were coincidentally 0.052ppb. Whereas, the mean aflatoxin levels in maize from male and female respondents were 0.056±0.037ppb and 0.039±0.029ppb respectively. Across the food value chain, wholesaler groundnut foods contained the highest mean aflatoxin levels of 0.088ppb (p= 0.27). Growing high polyamine containing crops, routine testing of aflatoxin prone foods and sensitizing food value chain players are important aflatoxin control strategies.
玉米和花生是乌干达种植的传统营养丰富、经济价值高的食物。然而,这些作物容易受到黄曲霉毒素污染,这可能导致黄曲霉中毒相关疾病。在乌干达不同的食品价值链、性别和农业生态区,食品中曲霉毒素的含量各不相同。因此,我们对来自Masindi和Soroti农业生态区的80种玉米和花生食品进行了横断面研究。我们确定了跨食品价值链、性别和农业生态区的玉米和花生样本中的黄曲霉毒素总量。这是为了评估乌干达食品的安全和质量状况。进行问卷调查,以获取有关食物处理方法的资料。每个食品样品取500g,用ELISA法分析总黄曲霉毒素水平。采用描述性统计和分析性统计对数据进行分析。总体而言,45%的玉米和30%的花生食品被黄曲霉毒素污染。东部和西部农业生态区食品中黄曲霉毒素的平均含量分别为0.052±0.036ppb和0.045±0.033ppb (p=0.124)。男性和女性受访者花生中黄曲霉毒素的平均含量巧合地为0.052ppb。而男性和女性玉米中黄曲霉毒素的平均含量分别为0.056±0.037ppb和0.039±0.029ppb。在整个食品价值链中,批发花生食品中黄曲霉毒素的平均含量最高,为0.088ppb (p= 0.27)。种植高多胺含量的作物、对易受黄曲霉毒素影响的食品进行常规检测和使食品价值链参与者变得敏感是重要的黄曲霉毒素控制策略。
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引用次数: 0
Characterization of antimicrobial secondary metabolites produced by Klebsiella pneumoniae and screening of its bioactive natural compounds using gas chromatography-mass spectrometry (GC-MS) 肺炎克雷伯菌抗菌次级代谢物的气相色谱-质谱联用研究及其活性天然化合物的筛选
Pub Date : 2023-08-30 DOI: 10.53771/ijlsra.2023.5.1.0071
I. Hameed, Sahar Sajjad Saad Zghair, Sarhan Thajeel
Microbial secondary metabolites are low molecular mass products with unusual structures. The structurally diverse metabolites show a variety of biological activities like antimicrobial agents. Thirty nine bioactive compounds were identified in the methanolic extract of Klebsiella pneumoniae. GC-MS analysis of Klebsiella pneumoniae revealed the existence of the Tricyclo[4.3.1.1(3.8)]undecan-1-amine, 3-Methoxybenzaldehyde semicarbazone, carboxaldehyde , 1-methyl-,oxime ,(Z)-(+), 1,5,5-Trimethyl-6-methylene-cyclohexene, 4-(2,5-Dihydro-3-methoxyphenyl)butylamine, Paromomycin , 9-Borabicyclo[3.31]nonane , 9-mercapto-, Benzenemethanol , 2-(2-aminopropoxy)-3-methyl, Acetamide , N-(6-acetylaminobenzothiazol-2-yl)-2-(adamantan, rin-6-carboxylic acid , 4-(2,5-Dihydro-3-methoxyphenyl)butylamine, N-(2,5-Dicyano-3,4-dihydro-2H-pyrrol-2-yl)-acetamide, 3,10-Dioxatricyclo [4.3.1.0(2,4)]dec-7-ene, 3-Cyclohex-3-enyl-propionic acid, Eicosanoic acid ,phenylmethyl ester, 3,7-Diazabicyclo[3.3.1]nonane , 9,9-dimethyl-, Dithiocarbamate , S-methyl-,N-(2-methyl-3-oxobutyl)-, dl-Homocysteine, 2-(2-Furyl)pyridine, 1,7-Dioxa-10-thia-4,13-diazacyclopentadeca-5,9,12-trione, 5,7-Dodecadiyn-1,12-diol, 1-(β-d-Arabinofuranosyl)-4-O-difluoromethyluracil, Uric acid, Pyrrolo[1.2-a]pyrazine-1,4-dione , hexahydro-,12-Methyl-oxa-cyclododecan-2-one, Phthalic acid , butyl undecyl ester, 9,12,15-Octadecatrienoic acid , 2,3-bis(acetyloxy)propyl ester, 1,2,4-Trioxolane-2-octanoic acid 5-octyl-, methyl ester, 12-Dimethylamino-10-oxododecanoic acid , Octahydrochromen-2-one, L-Aspartic acid , N-glycyl-,2H-Oxecin-2-one , 3,4,7,8,91,10-hexahydro-4-hydroxy-10-meth , Thiazolo[4,5-d]pyrimidine-5,7(4H,6H)-dione , 2-amino-4-(2-ph, Dec-9-en-6-oxo-1-ylamide, 3,6,12-Trimethyl-1,4,7,10,13,16-hexaaza-cyclooctadecane, 2-lodohiistidine, 2,5-Piperazinedione ,3,6-bis(2-methylpropyl)-, 9-Octadecenamide , (Z)-, 3',8,8'-Trimethoxy-3-piperidyl-2,2'-binaphthalene-1,1',4,4'-tetra. Clinical pathogens selected for antibacterial activity namely, Streptococcus pneumonia, Escherichia coli, Staphylococcus aureus, Proteus mirabilis, Staphylococcus epidermidis, It were 4.09±0.013, 2.99±0.300, 4.37±0.200, 3.22±0.210, and 4.00±0.203 respectively for Bacterial products (Metabolites Produced by Klebsiella pneumoniae), while recorded 1.08±0.200, 0.97±0.116, 2.08±0.233, 3.04±0.261, 0.98±0.166 respectively for Bacterial products Streptomycin antibiotics, and recorded 1.02±0.180, 1.00±0.190, 2.08±0.236, 1.00±0.100, and 1.82±0.200 respectively for Kanamycin antibiotics. Klebsiella pneumoniae produce many important secondary metabolites with high biological activities. Based on the significance of employing bioactive compounds in pharmacy to produce drugs for the treatment of many diseases, the purification of compounds produced by Klebsiella pneumoniae can be useful.
微生物次生代谢产物是具有特殊结构的低分子质量产物。结构多样的代谢物表现出多种生物活性,如抗菌药物。从肺炎克雷伯菌甲醇提取物中鉴定出39种活性物质。GC-MS分析发现,肺炎克雷伯菌中存在三环[4.3.1.1(3.8)]十一胺,3-甲氧基苯甲醛缩氨基酮,甲醛,1-甲基-,肟,(Z)-(+), 1,5,5-三甲基-6-亚甲基-环己烯,4-(2,5-二氢-3-甲氧基苯基)丁胺,帕罗霉素,9-硼比环[3.31]壬烷,9-巯基-,苯乙醇,2-(2-氨基丙氧基)-3-甲基,乙酰胺,N-(6-乙酰氨基苯并噻唑-2-基)-2-(金刚烷),环-6-羧酸,(4) - 2, 5-Dihydro-3-methoxyphenyl丁胺,N - (2 5-Dicyano-3 4-dihydro-2H-pyrrol-2-yl)乙酰胺,3,10-Dioxatricyclo[4.3.1.0(2、4)]dec-7-ene, 3-Cyclohex-3-enyl-propionic酸、花生酸、phenylmethyl酯,3,7-Diazabicyclo[3.3.1]壬烷,9日9-dimethyl,硫代氨基甲酸,S-methyl - N - (2-methyl-3-oxobutyl), dl-Homocysteine, 2 - (2-Furyl)吡啶,1,7-Dioxa-10-thia-4, 13-diazacyclopentadeca-5, 9日12-trione, 5, 7-Dodecadiyn-1, 12-diol, 1 -(β-d-Arabinofuranosyl) 4-o-difluoromethyluracil,尿酸,Pyrrolo [1.2] pyrazine-1、4-dione hexahydro, 12-Methyl-oxa-cyclododecan-2-one,邻苯二甲酸、丁十一烷基酯,9日,12日,15-Octadecatrienoic酸,2,二(acetyloxy)丙酯,1,2,4-Trioxolane-2-octanoic酸5-octyl,甲酯,12-Dimethylamino-10-oxododecanoic酸,Octahydrochromen-2-one,天门冬氨酸,N-glycyl - 2 h-oxecin-2-one, 3, 4, 7, 8, 91年,10-hexahydro-4-hydroxy-10-meth, Thiazolo(4、5 d) pyrimidine-5 7 (4 h、6 h)土卫四,2-amino-4 (2-ph Dec-9-en-6-oxo-1-ylamide,3,6,12-三甲基-1,4,7,10,13,16-六氮杂环十二烷,2 -lodohiistidine, 2,5-哌嗪二酮,3,6-二(2-甲基丙基)-,9-十八烯酰胺,(Z)-, 3',8,8'-三甲氧基-3-哌啶基-2,2'-联萘-1,1',4,4'-四元。临床病原菌抗菌活性分别为肺炎链球菌、大肠杆菌、金黄色葡萄球菌、奇异变形杆菌、表皮葡萄球菌,细菌产物(肺炎克雷伯菌产生的代谢物)抗菌活性分别为4.09±0.013、2.99±0.300、4.37±0.200、3.22±0.210、4.00±0.203,细菌产物链霉素抗菌活性分别为1.08±0.200、0.97±0.116、2.08±0.233、3.04±0.261、0.98±0.166,抗菌活性分别为1.02±0.180;卡那霉素抗菌药物分别为1.00±0.190、2.08±0.236、1.00±0.100、1.82±0.200。肺炎克雷伯菌产生许多重要的次生代谢产物,具有较高的生物活性。基于利用生物活性化合物在制药中生产治疗许多疾病的药物的意义,对肺炎克雷伯菌产生的化合物进行纯化可能是有用的。
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引用次数: 0
Chromatography fractions from the ethyl acetate fraction of Harungana madagascariensis Lam. Ex Poiret fruits (Hypericaceae) inhibited the growth of Mycobacterium tuberculosis 马达加斯加小檗乙酸乙酯部分的层析组分。金丝桃科水果对结核分枝杆菌的生长有抑制作用
Pub Date : 2023-08-30 DOI: 10.53771/ijlsra.2023.5.1.0073
O. Afieroho, Onyinye Blessing Okonkwo, J. Bimba, T. T. Eliya, Augustina Uche Osuji, K. Abo
The economic burden of drug resistant tuberculosis strain is enormous due to its being one of the leading cause of global mortality. New treatments that are faster, simpler and affordable are urgently needed. Thus this research aimed to validate that the ethyl acetate fraction from the Nigeria variety of Harungana madagascariensis contain secondary metabolites with anti-Mycobacterium tuberculosis activity. The fruit of H. madagascariensis was extracted with 70% aqueous ethanol by cold maceration. The crude aqueous ethanol extract was defatted with n-hexane by partitioning and the aqueous portion further partitioned with ethyl acetate to give ethyl acetate portion (EAP) used in this study. Fractionation of EAP was done using chromatographic techniques. Phytochemical screening of the fractions was done using standard methods. Anti- Mycobacterium tuberculosis screening was done using Lowestein Jensen(LJ) method (test fractions stock solution 1mg/ml diluted to a 0.01mg/ml in the LJ medium while isoniazid, dihydrostreptomycin, ethambutol and rifampicin at their reported minimum inhibition concentrations(MIC) were used as reference anti-TB drugs). Four (4) chromatography fractions (EAF1 –EAF4) were obtained. All fractions were found to contain phenolics with anthraquinone present in EAF2 and EAF3. Fractions EAF3 and EAF4 inhibited the growth of the Mycobacteria tuberculosis. This preliminary screening validates the use of H. madagascariensis in traditional medicine and as a potential source of natural products with anti-Mycobacterium tuberculosis activity as well as a good source of anthraquinone.
耐药结核菌株的经济负担是巨大的,因为它是全球死亡的主要原因之一。我们迫切需要更快、更简单、负担得起的新疗法。因此,本研究旨在验证尼日利亚品种马达加斯加哈隆加纳的乙酸乙酯部分含有具有抗结核分枝杆菌活性的次级代谢物。用70%乙醇冷浸法提取马达加斯加红桃果实。将粗乙醇水提物用正己烷分馏脱脂,再用乙酸乙酯分馏得到本研究用的乙酸乙酯部分(EAP)。用色谱技术对EAP进行分离。采用标准方法进行植物化学筛选。采用Lowestein Jensen(LJ)法进行抗结核分枝杆菌筛查(LJ培养基中1mg/ml原液稀释至0.01mg/ml,异烟肼、二氢链霉素、乙胺丁醇和利福平以其报道的最低抑制浓度(MIC)作为抗结核参比药物)。得到EAF1 -EAF4 4个层析组分。EAF2和EAF3均含有蒽醌类酚类物质。EAF3和EAF4组分抑制结核分枝杆菌的生长。这一初步筛选验证了马达加斯加分枝杆菌在传统医学中的应用,以及它作为具有抗结核分枝杆菌活性的天然产物的潜在来源以及蒽醌的良好来源。
{"title":"Chromatography fractions from the ethyl acetate fraction of Harungana madagascariensis Lam. Ex Poiret fruits (Hypericaceae) inhibited the growth of Mycobacterium tuberculosis","authors":"O. Afieroho, Onyinye Blessing Okonkwo, J. Bimba, T. T. Eliya, Augustina Uche Osuji, K. Abo","doi":"10.53771/ijlsra.2023.5.1.0073","DOIUrl":"https://doi.org/10.53771/ijlsra.2023.5.1.0073","url":null,"abstract":"The economic burden of drug resistant tuberculosis strain is enormous due to its being one of the leading cause of global mortality. New treatments that are faster, simpler and affordable are urgently needed. Thus this research aimed to validate that the ethyl acetate fraction from the Nigeria variety of Harungana madagascariensis contain secondary metabolites with anti-Mycobacterium tuberculosis activity. The fruit of H. madagascariensis was extracted with 70% aqueous ethanol by cold maceration. The crude aqueous ethanol extract was defatted with n-hexane by partitioning and the aqueous portion further partitioned with ethyl acetate to give ethyl acetate portion (EAP) used in this study. Fractionation of EAP was done using chromatographic techniques. Phytochemical screening of the fractions was done using standard methods. Anti- Mycobacterium tuberculosis screening was done using Lowestein Jensen(LJ) method (test fractions stock solution 1mg/ml diluted to a 0.01mg/ml in the LJ medium while isoniazid, dihydrostreptomycin, ethambutol and rifampicin at their reported minimum inhibition concentrations(MIC) were used as reference anti-TB drugs). Four (4) chromatography fractions (EAF1 –EAF4) were obtained. All fractions were found to contain phenolics with anthraquinone present in EAF2 and EAF3. Fractions EAF3 and EAF4 inhibited the growth of the Mycobacteria tuberculosis. This preliminary screening validates the use of H. madagascariensis in traditional medicine and as a potential source of natural products with anti-Mycobacterium tuberculosis activity as well as a good source of anthraquinone.","PeriodicalId":14144,"journal":{"name":"International Journal of Life Science Research Archive","volume":"21 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89112012","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Determinants of external debt, export-import, FDI, exchange rate, to foreign exchange reserves through balance of payments as intervening variables 外债的决定因素,进出口,外国直接投资,汇率,以外汇储备通过国际收支作为干预变量
Pub Date : 2023-08-30 DOI: 10.53771/ijlsra.2023.5.1.0077
Andi Dyna Riana, Retno Fitrianti, Muliana, Wiwin Anggriani Salawali, Rusneni, Arianto Taliding, Abdullah, Asriani, Arfandi SN
Foreign exchange reserves are interpreted as part of national savings and are a very important monetary indicator to show the strength or weakness of the country's economic fundamentals. Foreign exchange reserves is influenced by various factors, including; external debt, exports, imports, investment, and balance of payments. The purpose of this study is to analyze the determination (degree of influence) of factors of foreign debt, import exports, FDI, exchange rates, on foreign exchange reserves through and balance of payments (BOP). The research method used is a quantitative research method with secondary data types in the form of data series with a period of 12 years (2011-2022). The data analysis method used is path analysis. With the help of E-views software. The results of the analysis p there is a structure/path I obtained that the exchange rate variable has a real effect on the BOP (balance sheet), In the structure/path I it is obtained that the exchange rate variable has a real effect on the BOP. While simultaneously (together) it is known that the variables X1, X2, X3, X4, and X5 not significant effect on Y1 (balance of payments). The results of the structure/path II analysis found that the external debt variable had a real effect on the country's foreign exchange reserves, and simultaneously (together) it was known that the variables X1, X2, X3, X4, X5 and X6/Y1 had a real effect on Y2 (foreign exchange reserves). In addition, it was also found that the balance of payments /BOP variable as an intervening variable did not have a real effect on foreign exchange reserves.
外汇储备被解释为国民储蓄的一部分,是反映一个国家经济基本面强弱的非常重要的货币指标。外汇储备受多种因素的影响,包括:外债、出口、进口、投资和国际收支。本研究的目的是分析外债、进出口、FDI、汇率等因素对外汇储备和国际收支(BOP)的决定(影响程度)。研究方法采用定量研究方法,二次数据类型为数据序列形式,周期为12年(2011-2022年)。使用的数据分析方法是路径分析。借助E-views软件。分析的结果p有一个结构/路径I得到汇率变量对BOP(资产负债表)有实际影响,在结构/路径I得到汇率变量对BOP有实际影响。同时(一起)已知变量X1, X2, X3, X4和X5对Y1(国际收支)没有显著影响。结构/路径II分析的结果发现,外债变量对国家外汇储备有真实的影响,同时(一起)已知变量X1、X2、X3、X4、X5和X6/Y1对Y2(外汇储备)有真实的影响。此外,还发现国际收支/国际收支差额变量作为一个干预变量对外汇储备没有实际影响。
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引用次数: 0
Determinants of poverty in indonesia through the error correction model (ECM) approach 通过误差修正模型(ECM)方法研究印度尼西亚贫困的决定因素
Pub Date : 2023-08-30 DOI: 10.53771/ijlsra.2023.5.1.0078
Andi Dyna Riana, Retno Fitrianti, Muliana, Hikmah, Harmansyal, Syafri, Rahmawati Rahman, S. K. Aksa, E. S. Rasyidi
Poverty is a classic problem faced by developing countries including Indonesia. An increase in poverty will reduce the welfare of the Indonesian people. This study aims to determine the effect of unemployment and inflation on poverty in Indonesia. The results of the ECM analysis show that unemployment has a significant effect on poverty in the short term and long term in Indonesia while inflation has an insignificant effect on poverty in the short term and long term in Indonesia.
贫困是包括印尼在内的发展中国家面临的一个典型问题。贫困的增加将减少印度尼西亚人民的福利。本研究旨在确定失业和通货膨胀对印度尼西亚贫困的影响。ECM分析的结果表明,失业对印度尼西亚的短期和长期贫困都有显著影响,而通货膨胀对印度尼西亚的短期和长期贫困都没有显著影响。
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引用次数: 0
The effect of adding fermented shrimp waste extract in the ration on the balance of protein efficiency in egg production 日粮中添加发酵虾废提取物对蛋鸡蛋白质效率平衡的影响
Pub Date : 2023-08-30 DOI: 10.53771/ijlsra.2023.5.1.0075
Abun Abun, Hannifah F. Jaliny, K. Haetami, D. Rusmana
Background: The purpose of the study was to determine and obtain the level of addition of fermented shrimp waste extract in the ration as a feed additive that produces an optimal protein efficiency balance value in the egg production of purebred chickens. Materials and Methods: The study used 40 40-week-old layer laying hens in 20 cage units. The study used a randomized design method complete with five types of treatment, consisting of R 0 (ration without the use of fermented shrimp waste extract), R1 (ration containing 0.5% fermented shrimp waste extract), R2 (ration containing 1.0% fermented shrimp waste extract), R3 (ration containing 1.5% fermented shrimp waste extract), and R4 (ration containing 2.0% fermented shrimp waste extract). Each treatment was repeated four times with the observed variables being ration consumption, protein consumption, egg weight, and protein efficiency balance. The difference in effect between treatments was tested using the Tukey Test. Results: The results of the study found that the addition of fermented shrimp waste extract in the ration affected ration consumption and protein consumption, but did not affect egg weight and protein efficiency balance. Conclusions: The use of fermented shrimp waste extract in the 2% ration is optimal for the balance value of protein efficiency.
背景:本研究的目的是确定并获得在日粮中添加发酵虾渣提取物的水平,以使其在纯种鸡产蛋中产生最佳的蛋白质效率平衡值。材料与方法:选用40只40周龄蛋鸡,分20个笼单元进行试验。本试验采用随机设计方法,共设置5种处理,分别为r0(未添加发酵虾废提取物日粮)、R1(添加0.5%发酵虾废提取物日粮)、R2(添加1.0%发酵虾废提取物日粮)、R3(添加1.5%发酵虾废提取物日粮)和R4(添加2.0%发酵虾废提取物日粮)。每个处理重复4次,观察日粮消耗量、蛋白质消耗量、蛋重和蛋白质效率平衡。不同处理之间的效果差异使用Tukey Test进行测试。结果:研究结果发现,日粮中添加发酵虾废提取物对日粮消耗量和蛋白质消耗量有影响,但对蛋重和蛋白质效率平衡无影响。结论:以2%的发酵虾废提取物为最佳蛋白质效率平衡值。
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引用次数: 0
Iron nanoparticles decorated on graphitic carbon nitride/ZlF-67 support: An electro catalyst for the oxidation of methanol in fuel cell 氮化石墨碳/ZlF-67载体上修饰的铁纳米颗粒:燃料电池中甲醇氧化的电催化剂
Pub Date : 2023-07-30 DOI: 10.53771/ijlsra.2023.5.1.0065
Hussein Ali Obaid, R. Ojani
Iron nanoparticles (FeNPs) are the tiniest particle of iron metal with a large surface area and high reactivity. They are non-toxic. FeNPs have excellent dimensional stability and also possess high thermal and electrical conductivity, high surface area, and are highly magnetic. FeNPs can oxidize immediately when exposed to water or air and produces free Fe ions. There are numerous applications of FeNPs but the most promising one includes their role in drug delivery. Considerable attention is being paid to the utilization of computer-based and modeling optimization in fuel cell systems design. One advantage of this method is the positive effect on high cost and design cycle time savings, as well as its improved operation and design. The performance of optimum development depends primarily on the method by which the prototype is developed. It is crucial to identify the important factors and those that can be compromised without having an adverse effect on the design. Modeling is carried out to capture the designer’s interest aspects of the fuel cell system. A mathematical model that represents particular fuel cell system aspects and estimates its characteristics can be in a form of algebraic equations, differential equations, or a process or subroutine based on a computer. The model can involve various alternatives to the design that can be achieved by changing parameters, variables, constraints or conditions. The principle explained in the preceding step contributes to the basis for comparing the various alternatives to design.
铁纳米颗粒是金属铁中最小的颗粒,具有较大的表面积和较高的反应活性。它们是无毒的。FeNPs具有优异的尺寸稳定性,还具有高导热性和导电性,高表面积和高磁性。当暴露于水或空气中时,FeNPs会立即氧化并产生游离铁离子。FeNPs有许多应用,但最有前途的应用包括它们在药物传递中的作用。在燃料电池系统设计中,基于计算机和建模的优化技术的应用受到了广泛的关注。该方法的一个优点是对高成本和节省设计周期时间的积极影响,以及改进的操作和设计。最佳开发的性能主要取决于原型开发的方法。确定重要的因素和那些可以妥协而不会对设计产生不利影响的因素是至关重要的。建模是为了捕捉设计者对燃料电池系统感兴趣的方面。表示燃料电池系统的特定方面并估计其特性的数学模型可以是代数方程、微分方程或基于计算机的过程或子程序的形式。该模型可以包含设计的各种替代方案,这些方案可以通过改变参数、变量、约束或条件来实现。在前一步中解释的原则有助于比较设计的各种替代方案的基础。
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引用次数: 0
Isolation and identification of pathogenic bacteria of the genus Escherichia and Salmonella in the water environment tested positive for antibiotic residues in the city of Ndjamena, Cha 在查省恩贾梅纳市水环境中分离和鉴定的埃希氏菌属致病菌和沙门氏菌经检测抗生素残留呈阳性
Pub Date : 2023-07-30 DOI: 10.53771/ijlsra.2023.5.1.0072
DJASBEYE Mounpor, Ban-Bo Bebanto Antipas, TEREI Nadine, NAIBI KEITOYO Amedé, RAHILA LOUM Ghazida, NAÏM Saturnin, HALIME HISSEIN Hangata
Objective: The water environment is facing increasing contamination by antibiotic residues, favoring the development of pathogenic bacteria, in particular Escherichia and Salmonella. This study aims to determine the presence of pathogenic bacteria of the genus Escherichia and Salmonella in the water environment containing antibiotic residues in the city of Ndjamena, Chad. Methodology and results: Information gathered from questionnaires and the results of preliminary positive tests (premiTest) were used to identify the sample. A total of 27 wastewater samples from retention basins, hospital drainage channels, abattoir water and the Chari and Logone rivers were tested positive for antibiotic residues and retained for isolation of Escherichia and Salmonella bacteria. Cultures on specific media (EMB for Escherichiaand SS for Salmonella) were carried out in accordance with reference methods. A total of 36 isolates were obtained, including 15 of the Escherichia genus with a prevalence of 55.6% and 20 of the Salmonella genus with a prevalence of 74%. Analyzing the data by commune, a 100% prevalence of Salmonella was observed in the 2nd, 3rd, 6th and 10th arrondissements, and 80% and 57.1% respectively in the 8th and 7th arrondissements. Escherichia isolates were 100% prevalent in the 8th and 10th arrondissements, and 75% and 66.6% respectively in the 1st and 10th arrondissements. At neighborhood level, 100% Salmonella prevalence was observed in Ardepdjoumal, Diguel, Diguel Est, Gardolet, Clemat, Ndjari and Walia, while 100% E. coli prevalence was found in Dembé, Diguel, Diguel Est, Clemat, Ndjari, Walia, Gueli and Zafaye. These prevalences varied significantly at the 5% level (p-value = 0.004224 for Salmonella and p-value = 0.01921 for Escherichia) between the different districts and neighborhoods of the city of Ndjamena. Conclusion and application of results: This study revealed variability in the presence of Salmonella and E. coli in water samples from the various districts and neighborhoods of N’Djamena, with prevalences ranging from 0 to 100%. These high prevalences are explained by poor waste management in communes, health and veterinary establishments, highlighting for the first time the level of contamination of the water environment by these pathogenic bacteria. It is essential that the Ministries of Public Health and Livestock exert pressure to prohibât the discharge of drug residues into wastewater, in order to prevent drug résistance mechanisms in Chad.
目的:水环境中抗生素残留污染日益严重,有利于病原菌的滋生,尤其是埃希菌和沙门氏菌。本研究旨在确定乍得恩贾梅纳市含有抗生素残留的水环境中是否存在埃希氏菌属和沙门氏菌致病菌。方法和结果:利用从问卷收集的信息和初步阳性检测(premiTest)的结果来确定样本。截留盆地、医院排水渠道、屠宰场水以及查里河和洛贡河共27份废水样本经检测抗生素残留呈阳性,并保留下来分离埃希氏菌和沙门氏菌。在特定培养基(埃希氏菌为EMB培养基,沙门氏菌为SS培养基)上按照参考方法进行培养。共分离到36株,其中埃希菌属15株,流行率为55.6%,沙门氏菌属20株,流行率为74%。按小区分析,2区、3区、6区和10区沙门氏菌感染率为100%,8区和7区分别为80%和57.1%。8区和10区埃希菌感染率为100%,1区和10区分别为75%和66.6%。在社区水平上,Ardepdjoumal、Diguel、Diguel Est、Gardolet、Clemat、Ndjari和Walia的沙门氏菌感染率为100%,而demb、Diguel、Diguel Est、Clemat、Ndjari、Walia、Gueli和Zafaye的大肠杆菌感染率为100%。在恩贾梅纳市不同地区和社区之间,这些流行率在5%水平上差异显著(沙门氏菌p值= 0.004224,埃希菌p值= 0.01921)。结论和结果的应用:本研究揭示了恩贾梅纳不同地区和社区的水样中沙门氏菌和大肠杆菌存在的差异,患病率从0到100%不等。这些高流行率的原因是社区、卫生和兽医机构的废物管理不善,首次突出了这些致病菌对水环境的污染程度。公共卫生部和畜牧部必须施加压力,禁止将药物残留物排放到废水中,以防止乍得出现药物抗性机制。
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引用次数: 0
Surviving the Gauntlet: Navigating the hypercompetitive work culture 在挑战中生存:在竞争激烈的工作文化中导航
Pub Date : 2023-07-30 DOI: 10.53771/ijlsra.2023.5.1.0068
B. Karikalan, Aida Rezaei
In organizations, a hypercompetitive work environment can have significant impacts on both individuals and the overall organizational culture. Constant pressure and high expectations can lead to employee dissatisfaction and turnover, resulting in a loss of talent and knowledge. A hypercompetitive environment may discourage collaboration and teamwork as individuals focus primarily on individual success rather than collective goals. When individuals are solely focused on outperforming each other, they may be less inclined to share ideas and collaborate, hindering creativity and innovation within the organization. Hypercompetition can lead to disengagement and a lack of commitment among employees, as they may feel overwhelmed, undervalued, or constantly threatened by their colleagues. Excessive competition can foster a toxic work culture characterized by cutthroat behavior, lack of trust, and limited support among team members. Strategies to deal with a hypercompetitive work environment in organizations includes fostering a collaborative work culture, encouraging open communication, managing a good work-life balance, engaging in healthy competition, managing stress and engaging in well-being activities. Addressing a hypercompetitive work environment requires a holistic approach involving leadership, organizational policies, and individual efforts. By fostering a collaborative culture and prioritizing employee well-being, organizations can create a healthier and more productive work environment.
在组织中,过度竞争的工作环境会对个人和整个组织文化产生重大影响。持续的压力和高期望会导致员工的不满和离职,导致人才和知识的流失。过度竞争的环境可能会阻碍合作和团队合作,因为个人主要关注个人的成功而不是集体的目标。当个人只专注于超越彼此时,他们可能不太愿意分享想法和合作,从而阻碍了组织内的创造力和创新。过度竞争会导致员工脱离工作,缺乏投入,因为他们可能会感到不堪重负,被低估,或者经常受到同事的威胁。过度的竞争会形成一种有害的工作文化,其特点是团队成员之间的行为残酷、缺乏信任和有限的支持。应对组织中竞争激烈的工作环境的策略包括培养合作的工作文化,鼓励开放的沟通,管理良好的工作与生活平衡,参与健康的竞争,管理压力和参与福利活动。应对一个竞争激烈的工作环境需要一个全面的方法,包括领导、组织政策和个人努力。通过培养合作文化和优先考虑员工福利,组织可以创造一个更健康、更高效的工作环境。
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引用次数: 0
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International Journal of Life Science Research Archive
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