July 2021最新文献_第3页

Determining ethyl methane sulfonate-mediated (EMS) mutagenesis protocol for inducing high biomass yield in fodder barley (Hordeum vulgare L.) 饲料大麦(Hordeum vulgare L.)高产的甲烷磺酸乙酯(EMS)诱变方案的确定

July 2021 Pub Date : 2021-07-07 DOI: 10.21475/ajcs.21.15.07.p2877

Fatuma Fora Sharamo, H. Shimelis, B. M. OlaOlorun, H. Korir, A. Indetie, J. Mashilo

{"title":"Determining ethyl methane sulfonate-mediated (EMS) mutagenesis protocol for inducing high biomass yield in fodder barley (Hordeum vulgare L.)","authors":"Fatuma Fora Sharamo, H. Shimelis, B. M. OlaOlorun, H. Korir, A. Indetie, J. Mashilo","doi":"10.21475/ajcs.21.15.07.p2877","DOIUrl":"https://doi.org/10.21475/ajcs.21.15.07.p2877","url":null,"abstract":"Barley (Hordeum vulgare L.) has narrow genetic base for selection of promising ideotypes for the following traits: high biomass yield for livestock feed, enhanced agronomic and nutritional traits, and resistance to biotic and abiotic stresses. Ethyl methane sulfonate (EMS) mutagenesis offers opportunities for inducing genetic variation for key traits for development of feed barley ideotypes. The objective of this study was to determine optimal EMS dosage and exposure time to induce genetic variation for selection of high biomass yield six-row feed barley mutants. Five EMS dosages (i.e. 0.1%, 0.3%, 0.5%, 0.7% and 0.9% v/v) and five exposure times (i.e. 0.5 hr, 1 hr, 1.5 hr, 2 hrs and 2.5 hrs) were used on a six-row fodder barley using a 5 x 5 factorial treatment structure in a complete randomized design with three replications. Non-treated seed were used as a comparative control. Data was recorded for percent germination, seedling survival, shoot height, root height, shoot and root biomass. Significant (p < 0.05) EMS dosage x exposure time was observed for assessed traits indicating their influence on phenotypic variation in feed barley. Overall, a declining trend was observed for assessed traits with increased EMS dosage and exposure time. The LD50 value of 0.64% (v/v) EMS dosage was identified as an optimal dose for large-scale mutagenesis protocol to select fodder barley mutants with high biomass yield","PeriodicalId":218435,"journal":{"name":"July 2021","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114811422","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: 3

A Feasibility Analysis of Wind Power Project in the Hunza Valley of Pakistan 巴基斯坦罕萨河谷风电项目可行性分析

July 2021 Pub Date : 2021-07-01 DOI: 10.22581/MUET1982.2103.12

Muhammad Amjad Khan, S. Amin, A. R. Bhatti, S. Haroon, I. A. Sajjad

引用次数: 0

Perspective of Bioenergy in Pakistan for Sustainable Eco-Friendly Energy Substitute: A Review 巴基斯坦生物能源作为可持续生态友好能源替代的前景:综述

July 2021 Pub Date : 2021-07-01 DOI: 10.22581/MUET1982.2103.13

Ghulamullah Maitlo, Sikander Ali Abbasi, R. Korai, A. Memon

{"title":"Perspective of Bioenergy in Pakistan for Sustainable Eco-Friendly Energy Substitute: A Review","authors":"Ghulamullah Maitlo, Sikander Ali Abbasi, R. Korai, A. Memon","doi":"10.22581/MUET1982.2103.13","DOIUrl":"https://doi.org/10.22581/MUET1982.2103.13","url":null,"abstract":"Pakistan has remained an energy deficient country for the last few decades. The supply of electricity decreased in 2002-2007 against the exponentially increasing demand in Pakistan. In the meantime, severe load shedding was started across Pakistan that negatively affected the economic growth of the country. More than 63% of the population in rural areas live without electricity. The government cut down electricity supply eight to twelve hours per day in terms of load shedding that adversely affects the living standards and economic growth of the nation. In the world, Pakistan stands on 133 regarding ranking in energy consumption. Energy usage per capita in Pakistan is 482 kilograms of oil equivalent per year (kgoe/a) which is very low when compared with the industrialized countries. Besides that Pakistan strongly adheres with non-renewable energy options to mollify its energy demand. The import of fossil fuels to meet energy demand adversely affects the economy of Pakistan. This review helps in the identification of indigenous available biomass resources and their conversion processes for power production to improve power generation, living standards and economy of the country. The application of indigenous biomass resources for electricity generation will reduce the pressure caused by increased demand for energy.","PeriodicalId":218435,"journal":{"name":"July 2021","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124608464","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: 1

A Regression Analysis Based Model for Defect Learning and Prediction in Software Development 基于回归分析的软件开发缺陷学习与预测模型

July 2021 Pub Date : 2021-07-01 DOI: 10.22581/MUET1982.2103.15

M. Memon, M. Baloch, Muniba Memon, Syed Hyder Abbas Musavi

{"title":"A Regression Analysis Based Model for Defect Learning and Prediction in Software Development","authors":"M. Memon, M. Baloch, Muniba Memon, Syed Hyder Abbas Musavi","doi":"10.22581/MUET1982.2103.15","DOIUrl":"https://doi.org/10.22581/MUET1982.2103.15","url":null,"abstract":"The development of software undergoes multiple regression phases to deliver quality software. Therefore, to minimize the development effort, time and cost it is very important to understand the probable defects associated with the designed modules. It is possible that occurrence of a range of defects may impact the designed modules which need to be predicted in advance to have a close inter-association with the depended modules. Most of the existing defect prediction classifier mechanisms are derived from the past project data learning, but it is not sufficient for new project defect predicting as the new design may have a different kind of parameters and constraints. This paper recommends Regression Analysis (RA) based defect learning and prediction Defect Prediction (RA-DP) mechanism to support the defective or non-defective prediction for quality software development. The RA-DP approach provides two methods to perform this prediction analysis. It initially presents an association learning through RA to construct the regression rules from the learned knowledge required for the defect prediction. The constructed regression rules are used for defect prediction and analysis. To measure the performance of the RA-DP a regression experimental evaluation is performed over the defect-prone PROMISE dataset from NASA project. The outcome of the results is analyzed through measuring the prediction Accuracy, Sensitivity and Specificity to demonstrate the improvisation and effectiveness of the proposal in comparison to a few existing classifiers.","PeriodicalId":218435,"journal":{"name":"July 2021","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129978645","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

Performance Evaluation Methods for Check-Dams in Balochistan: A Review 俾路支省拦河坝性能评价方法综述

July 2021 Pub Date : 2021-07-01 DOI: 10.22581/MUET1982.2103.19

Vengus Panhwar, A. Zaidi, A. Ullah

{"title":"Performance Evaluation Methods for Check-Dams in Balochistan: A Review","authors":"Vengus Panhwar, A. Zaidi, A. Ullah","doi":"10.22581/MUET1982.2103.19","DOIUrl":"https://doi.org/10.22581/MUET1982.2103.19","url":null,"abstract":"This study aims to illustrate and present various techniques for evaluating the performance of check-dams and proposes some suitable approaches for impact assessment of dams built in the Balochistan province of Pakistan. These dams were built during the last decade to overcome the challenges of water scarcity and depleting aquifers due to excessive Groundwater (GW) extraction. It was expected that these dams would recharge the GW resources and save the aquifer system from collapsing. Check-dams have traditionally been the permanent source of water within the province. A check-dam is used to delay the floodwater runoff to make it available for domestic and agriculture purposes or to recharge GW. The water along these dams permeates into the ground to keep the aquifer genuinely stable throughout the year. The data were collected based on studies of published research papers and reports of international organizations containing key characteristics of performance evaluation techniques. This review will help to evaluate procedures, policy, and governance interventions in Balochistan by comparing them with the adopted practices in other regions of the world and its impact on the well-being of the society. In this paper, the performance evaluation of check-dams for specific cases is presented. The knowledge acquired will be utilized to highlight state-of-the-art practices and to identify the need for further research in this field.","PeriodicalId":218435,"journal":{"name":"July 2021","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133141408","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

Cultural factors in livestock emergency management 牲畜应急管理中的文化因素

July 2021 Pub Date : 2021-07-01 DOI: 10.47389/36.3.69

M. Leneman, E. Jordans, K. D. Balogh

引用次数: 2

Waste Heat and Wastewater Recovery in Textile Processing Industry: A Case Study of Adopted Practices 纺织加工业余热与废水回收:采用方法的案例研究

July 2021 Pub Date : 2021-07-01 DOI: 10.22581/MUET1982.2103.14

Tanveer A. Gadhi, Imran Ali, R. Mahar, H. Maitlo, N. Channa

引用次数: 0

Selective Flocculation Study of Hematite in HematiteQuartz-Kaolinite System in Presence of Ca2+, Mg2+ and Fe3+ Ions. Part1: Optimization of Ligand Ca2+、Mg2+和Fe3+离子存在下赤铁矿-石英-高岭石体系中赤铁矿的选择性絮凝研究第一部分:配体的优化

July 2021 Pub Date : 2021-07-01 DOI: 10.22581/MUET1982.2103.07

M. Abro, Abdul Jaleel Laghari, U. Aftab, Sikander Ali Channa, Mukesh Kumar

{"title":"Selective Flocculation Study of Hematite in HematiteQuartz-Kaolinite System in Presence of Ca2+, Mg2+ and Fe3+ Ions. Part1: Optimization of Ligand","authors":"M. Abro, Abdul Jaleel Laghari, U. Aftab, Sikander Ali Channa, Mukesh Kumar","doi":"10.22581/MUET1982.2103.07","DOIUrl":"https://doi.org/10.22581/MUET1982.2103.07","url":null,"abstract":"Separation of ultrafine hematite from quartz and kaolinite gangue minerals using selective flocculation technique is markedly affected by the state of inter mineral interaction which is governed by type and content of polyvalent metal ions. Because of the presence of polyvalent metal ions hetracoagulation of gangue minerals is widely acknowledged, thus selective flocculation of ultrafine hematite from associated gangue minerals is challenging task when their concentration is above 10 ppm. This study has shown that state of strong interaction of gangue minerals with hematite due to presence of 15 ppm Ca2+, 3 ppm Mg2+ and 3 ppm Fe3+ ions can be weakened by addition of optimal dose of Sodium Hexametaphosphate (SHMP) ligand. The optimization of ligand dose is achieved through analysis of Zeta Potential (ZP) as a function of slurry pH. It is noted that 50 ppm of SHMP is sufficient to restore the ZP of hematite, where selective dispersion of the slurry constituents are possible. Our results further showed that conventional strategy of obtaining minimum difference of ±30 mV in the ZP of hematite and gangue minerals quartz and kaolinite would not work especially in the presence of 15 ppm Ca2+, 3 ppm Mg2+ and 3 ppm Fe3+ ions. Attempts to achieve the minimum threshold difference in the ZP of the minerals will cause over dispersion.","PeriodicalId":218435,"journal":{"name":"July 2021","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116077206","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

Tensile Properties of Bagasse Fiber Composites 甘蔗渣纤维复合材料的拉伸性能

July 2021 Pub Date : 2021-07-01 DOI: 10.22581/MUET1982.2103.05

Sheraz Hussain Siddique, Saira Faisal, B. Zahid, Chunhong Wang

{"title":"Tensile Properties of Bagasse Fiber Composites","authors":"Sheraz Hussain Siddique, Saira Faisal, B. Zahid, Chunhong Wang","doi":"10.22581/MUET1982.2103.05","DOIUrl":"https://doi.org/10.22581/MUET1982.2103.05","url":null,"abstract":"Bagasse is a waste generated in abundance from the sugarcane industry. This investigation was planned to convert bagasse waste into a useful composite. For this purpose the bagasse waste was obtained from sugar cane juice producer. In this study, the extraction of bagasse fibers was done manually and they were treated with sodium hydroxide. The treated bagasse fibers had higher tensile properties as compared to untreated ones, so the alkali treated fibers were used as reinforcement for making composites. Hand lay-up technique was used to manufacture bagasse composite samples. The fiber length (1 inch and 2 inch) and fiber weight percentage (10 wt% and 20 wt%) were considered as variables. It was found that better tensile properties were obtained with higher fiber length (2 inch) and weight percentage (20 wt%). Bagasse-cotton fabric composites were also produced using cotton fabric as a base material and the bagasse fibers were sandwiched between a printed and plain cotton fabric. The idea was to consider these composites useful for sun-shades or for decorative purposes. It was also found that bagasse-cotton fabric reinforced composites had higher tensile strength and strain; however the modulus had reduced due to higher elongation of cotton fabrics. With the increase in the weight percentage the tensile properties had reduced this might be because during the composite manufacturing the epoxy resin had to pass through the fabric to wet the bagasse fiber out and they were not wetted out properly. This phenomenon needs further investigation.","PeriodicalId":218435,"journal":{"name":"July 2021","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132170752","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: 2

Interaction of Small Hydrocarbons with Fusion Relevant Beryllium Thin Films 小碳氢化合物与铍薄膜的相互作用

July 2021 Pub Date : 2021-07-01 DOI: 10.22581/MUET1982.2103.08

B. Rasul, G. Aroog

{"title":"Interaction of Small Hydrocarbons with Fusion Relevant Beryllium Thin Films","authors":"B. Rasul, G. Aroog","doi":"10.22581/MUET1982.2103.08","DOIUrl":"https://doi.org/10.22581/MUET1982.2103.08","url":null,"abstract":"Ion-surface collision studies are carried out with small deuterated hydrocarbon cations i.e. CDx + with x = 2-4 colliding with fusion relevant Beryllium (Be) thin films with ions incident energy as low as 0 eV and as high as Ein = 100 eV. Be films are coated on stainless steel surface by the technique of Thermionic Vacuum Arc (TVA); a novel thin film deposition method with primary as well distinguished characteristic of control of ion flux and respective dose towards the substrate. Prior to scattering, methane-d4 99 atom % D is ionized by electron impact and ions are mass and energy analyzed. Ionization and collisions are performed in ultra high vacuum conditions. In these kinds of collision experiments, we have recorded secondary ion mass spectra and plotted respective incident energy resolved abundances of secondary product ions. Relative abundances in percentage of total secondary ions are plotted and it is observed that such beryllium films can accumulate charged hydrocarbon layers as surface adsorbates. These self assembled layers play a primary role in surface-scattering of primary ions. Moreover, it is seen that bond dissociation energy in lighter hydrocarbons is higher than that for heavier species and shows primarily that the deuterium atoms are loosely bounded to carbon atoms in heavier hydrocarbons than in lighter ones.","PeriodicalId":218435,"journal":{"name":"July 2021","volume":"167 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122320926","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