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American Journal of Plant Sciences 2013年第9期4卷 1709-1712页

作者： muhammad naeem Qaisar Bashir Ahmad Chaudary muhammad Uzair Sajid Nawaz Hussain Faculty of Pharmacy Bahauddun Zakariya University Multan Pakistan.

The antioxidant and cytotoxic activities of Methanolic and Dichloromethane extracts of Croton bonplandianum Baill were evaluated in a bid to provide better scientific basis for the isolation of bioactive compounds from the plant. The DPPH and hydroxyl radical scavenging activities of the Methanolic extract were 59.62%, and Dichloromethane extract was not toxic. Gallic acid used as reference compounds showed higher antioxidant activities to the plant extracts. Both methanolic and dichloromethane extracts were evaluated for their brine shrimp lethality. Methanolic extract showed cytotoxic activity in vitro with a LD50 value of 115.76 (0.0048-3.76) μg/ml. Etoposide was used as standard drug. Put together, these results confirm that Croton bonplandianum extracts possess appreciable natural antioxidant and cytotoxic potentials, thereby providing good justification for the isolation of pure bioactive compounds.

关键词： Antioxidant Activity Scavenging Activity Cytotoxic Activity Brine Shrimp Croton bonplandianum

Role of La_2_O3 as Promoter and Support in Ni/γ-Al_2O_3 Catalysts for Dry Reforming of Methane

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Chinese Journal of Chemical Engineering 2014年第1期22卷 28-37页

作者： Ahmed S.Al-Fatesh muhammad A.naeem Anis H.Fakeeha Ahmed E.Abasaeed Chemical Engineering Department College of Engineering King Saud University

The nature of support and type of active metal affect catalytic performance. In this work, the effect of using La203 as promoter and support for Ni/γ-A1203 catalysts in dry reforming of methane was investigated. The reforming reactions were carried out at atmosphenc pressure in the temperature range of 500-2700℃. The activity and stability of the catalyst, carbon formation, and syngas （H2/CO） ratio were determined. Various techniques were applied for characterization of both fresh and used catalysts. Addition of La2O3 to the catalyst matrix improved the dispersion of Ni and adsorption of CO2, thus its activity and stability enhanced.

关键词： CO2 methane reforming.Ni/γ-A12O3 La2O3 carbon deposition H2/CO

Antimicrobial and Antioxidant Activities of Methanolic Extract and Fractions of <i>Epilobium roseum</i>(Schreb.) against Bacterial Strains

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American Journal of Plant Sciences 2021年第3期12卷 275-284页

作者： muhammad Ikram Niaz Ali Gul Jan Farzana Gul Jan muhammad Romman muhammad Ishaq Yasir Islam naeem Khan Department of Botany Hazara University Mansehra Pakistan Department of Botany Abdul Wali Khan University Mardan Pakistan Department of Botany University of Chitral Chitral Pakistan Department of Plant Sciences Quaid-i-Azam University Islamabad Pakistan

Present study aims to evaluate antimicrobial and antioxidant activities of the crude methanolic extract and different fractions of the Epilobium roseum (Schreb). The extract and fractions were used against pathogenic bacteria (Bacillus subtilis, Bacillus atrophaeus, Klebsiella pneumonia and Pseudomonas aeruginosa) and fungal strains (Aspergillus niger and Aspergillus flavus). The methanolic extract and their sub fraction n-hexane showed a prominent inhibition zone against all bacterial strains but inactive against fungal strains. The various extracts of Epilobium roseum (Schreb) from various parts were tested for their antioxidant activity by 1,1-Diphenyl-2-picryl-hydrazyl (DPPH) assay. The IC

Habitat Utilization and Feeding Biology of Himalayan Grey Langur (Semnopithecus entellus ajex) in Machiara National Park, Azad Jammu and Kashmir, Pakistan

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Zoological Research 2010年第2期31卷 177-188页

作者： Riaz Aziz Minhas Khawaja Basharat Ahmed muhammad Siddique Awan naeem Iftikhar Dar World Wide Fund for Nature-Pakistan (WWF-Pakistan) AJK Office Muzaffarabad Azad Jammu and Kashmir 13100 Pakistan Department ofZoology University of Azad Jammu and Kashmir Muzaffarabad Azad Jammu and Kashmir 13100 Pakistan Department of Wildlife and Fisheries Government of Azad Jammu and Kashmir Muzaffarabad Azad Jammu and Kashmir 13100 Pakistan

Habitat utilization and feeding biology of Himalayan Grey Langur （Semnopithecus entellus ajex） were studied from April, 2006 to April, 2007 in Machiara National Park, Azad Jammu and Kashmir, Pakistan. The results showed that in the winter season the most preferred habitat of the langurs was the moist temperate coniferous forests interspersed with deciduous trees, while in the summer season they preferred to migrate into the subalpine scrub forests at higher altitudes. Langurs were folivorous in feeding habit, recorded as consuming more than 49 plant species （27 in summer and 22 in winter） in the study area. The mature leaves （36.12%） were preferred over the young leaves （27.27%） while other food components comprised of fruits （17.00%）, roots （9.45%）, barks （6.69%）, flowers （2.19%） and stems （1.28%） of various plant species.

关键词： Himalayan Grey Langur Habitat Food biology Machiara National Park

Study of Smart Grid Communication Network Architectures and Technologies

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Journal of Computer and Communications 2019年第3期7卷 19-29页

作者： naeem Raza muhammad Qasim Akbar Aized Amin Soofi Samia Akbar Department of Computer Science National Textile University Faisalabad Pakistan Department of Computer Science Government College University Faisalabad Pakistan Department of Computer Science Allama Iqbal Open University Islamabad Pakistan

Smart Grid (SG) is an emerging paradigm of the modern world to upgrade and enhance the existing conventional electrical power infrastructure from generation to distribution to the consumers in a two-way communication fashion to automate the electrical power demand and supply and make this a cyber-physical system. SG infrastructure key elements, such as smart meters, circuit breakers, transformers, feeders, substations, control centers, grid stations, are required well-formed communication network architectures. SG infrastructure is divided into three main communication networks architectures, such as HAH, NAN, and WAN. Each of these communication network architectures requires reliable, stable, secure, high data rate at real-time with the help of different wireline and wireless communication technologies from HAN to WAN networks. To understand the complete concepts about SG, a concise review is presented and it will help the readers to get foundations of communication network architectures and technologies of SG.

关键词： Smart Grid Communication Network Architectures Wireline and Wireless Communication Technologies HAN NAN WAN

Involvement of 2'-5'oligoadenylate synthetase-like proteinin the survivalof Mycobacterium tuberculosis avirulent strain in macrophages

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Animal Diseases 2023年第4期3卷 275-285页

作者： Aikebaier Reheman Xiaojian Cao Yifan Wang Xi Nie Gang Cao Wei Zhou Bing Yang Yingying Lei Weipan Zhang muhammad Ahsan naeem Xi Chen State Key Laboratory of Agricultural Microbiology College of Veterinary MedicineHuazhong Agricultural UniversityWuhan 430070China College of Animal Science and Technology Tarim UniversityAlar 843300China Bio-Medical Center Huazhong Agricultural UniversityWuhan 430070China Department of Basic Sciences(Pharmacology) University of Veterinary and Animal Sciences(Narowal Campus)Lahore 54000Pakistan

Mycobacterium tuberculosis(***)can replicate in the macrophage by interfering with many host protein *** it is far from known these host proteins for controlling *** ***,we infected macrophages including THP-1 and Raw264.7 cells with *** and identified the differentially expressed genes(DEGs)in the interferon signaling *** them,2'-5'oligoadenylate synthetase-like(OASL)underwent the greatest upregulation in ***-infected *** of the expression of OASL attenuated *** survival in ***,bioinformatics analysis revealed the potential interaction axis of OASL-TAB3-RvO127,which was further validated by the yeast-two-hybrid(Y2H)assay and *** interaction axis might regulate the *** survival and proliferation in *** study reveals a possible role of OASL during *** infection as a target to control its propagation.

关键词： Mycobacterium tuberculosis Interferon Interferon stimulated genes OASL

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欧洲地熊蜂对我国本土熊蜂的生殖干扰评估

昆虫学报 2018年第3期61卷 348-359页

作者：袁晓龙 muhammad naeem 张红梁铖黄家兴安建东中国农业科学院蜜蜂研究所、农业部授粉昆虫生物学重点开放实验室北京100093

【目的】外来物种与本土亲缘关系较近的物种可能会发生交尾竞争,干扰本土物种的正常繁衍。欧洲地熊蜂Bombus terrestris是全球范围内商业化应用最广的传粉蜂种,但在许多国家造成了生物入侵。本研究旨在明确欧洲地熊蜂对我国本土熊蜂产... 详细信息

【目的】外来物种与本土亲缘关系较近的物种可能会发生交尾竞争,干扰本土物种的正常繁衍。欧洲地熊蜂Bombus terrestris是全球范围内商业化应用最广的传粉蜂种,但在许多国家造成了生物入侵。本研究旨在明确欧洲地熊蜂对我国本土熊蜂产生生殖干扰的可能性。【方法】采用四级杆飞行时间-气质联用系统(gas chromatography-quadrupole time of flight mass spectrometry,GC-QTOF/MS)测定了欧洲地熊蜂和我国本土9种熊蜂的雄蜂头部分泌物的成分,并进行聚类分析;在人工控制环境下比较了欧洲地熊蜂对我国重要熊蜂种类的交尾影响。【结果】雄蜂头部分泌物气质色谱图在同一熊蜂种内基本一致,而在不同熊蜂种之间差异明显;我国红光熊蜂***、兰州熊蜂***与欧洲地熊蜂的雄蜂头部分泌物成分相似性分别为58.49%与49.23%;在人工控制环境下欧洲地熊蜂雄蜂可以与兰州熊蜂蜂王杂交,并能够显著降低兰州熊蜂的交尾成功率(P<0.01)。【结论】欧洲地熊蜂与我国一些熊蜂种的雄蜂头部分泌物成分相似性较高,能够干扰其正常交尾,具有较高的生殖干扰风险。为了保护我国本土熊蜂资源与生态系统平衡避免造成生物入侵,我们应该谨慎使用外来熊蜂物种。

关键词：欧洲地熊蜂兰州熊蜂雄蜂头部分泌物交尾干扰生物入侵

不同雨强、坡度对秸秆覆盖保持水土效果的影响

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水土保持学报 2016年第2期30卷 131-135,142页

作者：车明轩宫渊波 muhammad naeem Khan 陈兆利曾倩兰依依四川农业大学林学院成都611130

利用室内人工模拟降雨试验,研究了4种设计雨强（33,54,94,125mm/h）、3种设计坡度（5°,10°,25°）在覆盖条件下对紫色土坡面初始产流时间、覆盖保水率和保沙率的影响。结果表明：覆盖条件下初始产流时间相比裸地均有一定的滞后效果,... 详细信息

利用室内人工模拟降雨试验,研究了4种设计雨强（33,54,94,125mm/h）、3种设计坡度（5°,10°,25°）在覆盖条件下对紫色土坡面初始产流时间、覆盖保水率和保沙率的影响。结果表明：覆盖条件下初始产流时间相比裸地均有一定的滞后效果,且其初始产流的滞后时间随坡度、雨强的增加而减少。当坡度增大至25°,雨强在94mm/h以上时,其滞后时间逐渐趋于稳定,在1.61~2.84min范围内波动。雨强是影响秸秆覆盖保持水土作用的重要因子,与覆盖保水率、保沙率均在0.01水平上呈显著负相关,且在不同坡度条件下均可以用抛物线进行很好的描述。不同坡度条件下,覆盖的保水率随雨强的增加逐渐下降至14.5%,而其保沙率则只下降至92.25%,相比覆盖的保水作用,其保沙作用更加明显。覆盖条件下,坡度对坡面产流及产沙的贡献率均大于50%,坡度对秸秆覆盖保持水土的作用影响很大。坡度对坡面侵蚀的贡献率在裸地和覆盖条件下均随雨强的增加而呈现减小的趋势,且在相同雨强下,坡度的贡献率在覆盖条件下均大于裸地,在大雨强下（94mm/h和125mm/h）差异明显。

关键词：人工模拟降雨紫色土秸秆覆盖水土保持

细茎石斛多糖的提取条件优化及其抗氧化活性研究

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安徽农业科学 2018年第20期46卷 1-5页

作者： muhammad naeem Asghar 合肥工业大学食品科学与工程学院安徽合肥230009

[目的]研究细茎石斛多糖的最佳提取条件及其抗氧化活性。[方法]通过单因素试验和响应面分析,研究细茎石斛多糖(DMP)的最佳提取条件。通过体外试验评价细茎石斛多糖的体外抗氧化活性。[结果]在料液比为1∶53,时间为3 h,温度为83℃的提取... 详细信息

[目的]研究细茎石斛多糖的最佳提取条件及其抗氧化活性。[方法]通过单因素试验和响应面分析,研究细茎石斛多糖(DMP)的最佳提取条件。通过体外试验评价细茎石斛多糖的体外抗氧化活性。[结果]在料液比为1∶53,时间为3 h,温度为83℃的提取条件下,DMP最高产量可达185 mg/g。体外抗氧化活性研究结果表明,DMP对超氧阴离子自由基、ABTS自由基、羟基自由基具有明显的清除作用,其中对ABTS自由基清除能力与维生素C相当;DMP对DPPH自由基的清除能力和还原能力效果比较适中。[结论]该研究揭示细茎石斛多糖可以作为一种天然抗氧化剂,为基于多糖的药物及保健食品的开发提供新思路。

关键词：细茎石斛多醣最佳提取条件抗氧化活性