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19篇 您的检索式:作者名="Haider Abbas"
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1中国荷斯坦牛CSN3基因多态性及其与泌乳性状的关联性显示文摘【目的】研究中国荷斯坦牛CSN3基因的多态性,并探索其与泌乳性状的关系。【方法】采用DNA测序方法,对565头中国荷斯坦牛CSN3基因进行群体变异分析,将检测到的单核苷酸多态性(SNP)位点与中国荷斯坦牛泌乳性状进行关联性分析,同时分析不同双倍型对中国荷斯坦牛泌乳性状的影响。【结果】从中国荷斯坦牛CSN3基因中共检测到4个SNP位点,分别为g.463A>G、g.1012A>C、g.2015T>A和g.2396A>T,除g.2396A>T外,其余3个SNPs位点与中国荷斯坦牛泌乳性状紧密关联,其中g.463A>G、g.2015T>A均可以显著影响乳脂率和乳蛋白率,g.1012A>C可以显著影响乳脂率。双倍型关联性分析发现,H14H14的乳脂率显著或极显著高于其他双倍型。【结论】CSN3基因可以作为中国荷斯坦牛泌乳性状的候选基因用于标记辅助选择。胡言 桂林生 余横伟 Haider Abbas Raza 昝林森 2018西北农林科技大学学报(自然科学版)2018,46,3:5
2Memristive SRAM cell of seven transistors and one memristor显示文摘In this work, a novel memristive SRAM cell is designed using seven transistors and one memristor(7T1M). In this 7T1 M SRAM cell, the non-volatile functionality is achieved by adding a single memristor and a transistor to the design of a volatile SRAM cell. The designing of the 7T1 M SRAM cell also introduces VCTRL which allows bidirectional current flowing through the memristor, instead of relying on complementary input sources which would require more design components. In this article, memristive SRAM cells available from the literature are simulated using the same simulation environment for a fair comparison. Simulations show that the7T1 M SRAM cell has the least power consumption against other memristive SRAM cells in the literature. The7T1 M SRAM cell operates with an average switching speed of 176.21 ns and an average power consumption of2.9665μW. The 7T1 M SRAM cell has an energy-delay-area product value of 1.61, which is the lowest among the memristive SRAM cells available in the literature.Patrick W.C.Ho Haider Abbas F.Almurib T.Nandha Kumar 2016Journal of Semiconductors2016,37,10:3
3Towards engineering in memristors for emerging memory and neuromorphic computing: A review显示文摘Resistive random-access memory(RRAM),also known as memristors,having a very simple device structure with two terminals,fulfill almost all of the fundamental requirements of volatile memory,nonvolatile memory,and neuromorphic characteristics.Its memory and neuromorphic behaviors are currently being explored in relation to a range of materials,such as biological materials,perovskites,2D materials,and transition metal oxides.In this review,we discuss the different electrical behaviors exhibited by RRAM devices based on these materials by briefly explaining their corresponding switching mechanisms.We then discuss emergent memory technologies using memristors,together with its potential neuromorphic applications,by elucidating the different material engineering techniques used during device fabrication to improve the memory and neuromorphic performance of devices,in areas such as ION/IOFF ratio,endurance,spike time-dependent plasticity(STDP),and paired-pulse facilitation(PPF),among others.The emulation of essential biological synaptic functions realized in various switching materials,including inorganic metal oxides and new organic materials,as well as diverse device structures such as single-layer and multilayer hetero-structured devices,and crossbar arrays,is analyzed in detail.Finally,we discuss current challenges and future prospects for the development of inorganic and new materials-based memristors.Andrey S.Sokolov Haider Abbas Yawar Abbas Changhwan Choi 2021Journal of Semiconductors2021,42,1:2
4Comparison between Pt/TiO_2/Pt and Pt/TaO_X/TaO_Y/Pt based bipolar resistive switching devices显示文摘Nonvolatile memories have emerged in recent years and have become a leading candidate towards replacing dynamic and static random-access memory devices.In this article,the performances of T1O2 and TaO2nonvolatile memristive devices were compared and the factors that make TaO2 memristive devices better than T1O2 memristive devices were studied.TaO2 memristive devices have shown better endurance performances(108times more switching cycles) and faster switching speed(5 times) than TiO2 memristive devices.Electroforming of TaO2 memristive devices requires 4.5 times less energy than TiO2 memristive devices of a similar size.The retention period of TaO2 memristive devices is expected to exceed 10 years with sufficient experimental evidence.In addition to comparing device performances,this article also explains the differences in physical device structure,switching mechanism,and resistance switching performances of TiO2 and TaO2 memristive devices.This article summarizes the reasons that give TaO2 memristive devices the advantage over TiO2 memristive devices,in terms of electroformation,switching speed,and endurance.Patrick W.C.Ho Firas Odai Hatem Haider Abbas F.Almurib T.Nandha Kumar 2016Journal of Semiconductors2016,37,6:2
5Papaya Ring Spot Virus:An Understanding of a Severe Positive-Sense Single Stranded RNA Viral Disease and Its Management显示文摘Viral diseases have been studied in-depth for reducing quality,yield,health and longevity of the fruit,to highlight the economic losses.Positive-sense single-stranded RNA viruses are more devastating among all viruses that infect fruit trees.One of the best examples is papaya ringspot virus(PRSV).It belongs to the genus Potyvirus and it is limited to cause diseases on the family Chenopodiaceae,Cucurbitaceae and Caricaceae.This virus has a serious threat to the production of papaya,which is famous for its high nutritional and pharmaceutical values.The plant parts such as leaves,latex,seeds,fruits,bark,peel and roots may contain the biological compound that can be isolated and used in pharmaceutical industries as a disease control.Viral disease symptoms consist of vein clearing and yellowing of young leaves.Distinctive ring spot patterns with concentric rings and spots on fruit reduce its quality and taste.The virus has two major strains P and W.The former cause disease in papaya and cucurbits while the later one in papaya.Virion comprises 94.4%protein,including a 36 kDa coat protein which is a component responsible for a non-persistent transmission through aphids,and 5.5%nucleic acid.Cross protection,development of transgenic crops,exploring the resistant sources and induction of pathogen derived resistance have been recorded as effective management of PRSV.Along with these practices reduced aphid population through insecticides and plant extracts have been found ecofriendly approaches to minimize the disease incidence.Adoption of transgenic crops is a big challenge for the success of disease resistant papaya crops.The aim of this review is to understand the genomic nature of PRSV,detection methods and the different advanced control methods.This review article will be helpful in developing the best management strategies for controlling PRSV.Muhammad Umer Mustansar Mubeen Yasir Iftikhar Haider Ali Muhammad Zafar-ul-Hye Rafia Asghar Mazhar Abbas Malik Abdul Rehman Ernesto A.Moya-Elizondo Yuejun He 2022Phyton-International Journal of Experimental Botany2022,91,10:1
6Effect of thickness on the structural, optical and electrical properties of thermally evaporated PbI 2 thin films显示文摘Mohd Shkir Haider Abbas Siddhartha Ziaul Raza Khan 2012Journal of Physics and Chemistry of Solids2012,,11:1
7Gefitinib for oesophageal cancer progressing after chemotherapy (COG): a phase 3, multicentre, double-blind, placebo-controlled randomised trial显示文摘Susan J Dutton David R Ferry Jane M Blazeby Haider Abbas Asa Dahle-Smith Wasat Mansoor Joyce Thompson Mark Harrison Anirban Chatterjee Stephen Falk Angel Garcia-Alonso David W Fyfe Richard A Hubner Tina Gamble Lynnda Peachey Mina Davoudianfar Sarah R Pear 2014Lancet Oncology2014,,8:1
8A framework for preservation of cloud users' data privacy u- sing dynamic reconstruction of metadata显示文摘ADEELA Waqar ASAD Raza HAIDER Abbas 2013Journal of Net- work and Computer Applications2013,36,1:1
9Hypokalemic periodic paralysis显示文摘Haider Abbas Nikhil Kothari Jaishri Bogra 2012National Journal of Maxillofacial Surgery2012,,2:1
10Inexpensive synthesis of a high-performance Fe3O4-SiO2-TiO2 photocatalyst: Magnetic recovery and reuse显示文摘一种大音阶的第五音胶化技术为 magnetite-silica-titania 的合成被开发了(Fe 3 O 4-SiO2-TiO2) 有改进 photocatalytic 性质的第三级的 nanocomposite 基于便宜 titania 和硅石先锋的使用。产生材料的非凡的 photocatalytic 活动被使用他们到 photocatalyze 表明甲又蓝色的降级答案。最好的明确的表达完成了 98% 甲又蓝色降级。现在的工作的一个有趣的特征是有磁力地分开并且再使用催化剂的能力。催化剂的效率在二复用期间仍然保持高。综合 nanomaterials 被 X 光检查衍射(XRD ) 描绘,扫描电子显微镜学(SEM ) ,传播电子显微镜学(TEM ) , Fourier 变换红外线(FTIR ) 光谱学, ultra-violet-visible 光谱学,弥漫的反射光谱学,和 thermogravimetric 分析。XRD 分析揭示了立方的磁铁矿和锐钛矿 titania 晶体的 multicrystalline 系统的形成。SEM 和 TEM 描述揭示了尺寸的开发得好、 homo-geneously 分散的粒子不到 15 nm。FTIR 系列证实了 titania 和硅石的化学相互作用。准备材料的光性质依赖于他们的成分金属氧化物的相对内容,这进一步被注意。Nadir Abbas Godlisten N. Shao Syed M. Imran Muhammad S. Haider Hee Taik Kim 2016Frontiers of Chemical Science and Engineering2016,10,3:1
11Thickness-dependent monochalcogenide GeSe-based CBRAM for memory and artificial electronic synapses显示文摘Investigating the promising chalcogenide materials for the development of memory and advanced neuromorphic computing applications is a critical step in realizing electronic memory and synaptic devices that can efficiently emulate biological synaptic functions.However,the assessment of monochalcogenide materials for the fabrication of highly scalable memory and electronic synaptic devices that can accurately mimic synaptic functions remain limited.In the present study,we investigated the thickness-dependent resistive switching(RS)behavior of conductive bridge random access memory(CBRAM)based on a monochalcogenide GeSe switching medium for its possible application in high-performance memory and electronic synapses.GeSe thin films of different thicknesses(6,13,24,35,47,and 56 nm)were deposited via sputtering to fabricate CBRAM devices with a stacking sequence of Ag/GeSe/Pt/Ti/SiO_(2).The devices exhibited compliance current(CC)-free and electroforming-free RS with highly stable endurance and retention characteristics with no major degradation.All devices with a thickness of 6 nm had a low-resistance state(LRS),which required an initial reset to ensure reliable switching cycles.The devices with a thickness of 47 nm and above exhibited the co-existence of unipolar resistive switching(U-RS)and bipolar resistive switching(B-RS)with the CC-controlled transition between the two switching behaviors.Multilevel resistance states in the 24-nm device between a high-resistance state(HRS)and an LRS were achieved by controlling the set-CC(from 5 mA to CC-free)and the reset stop voltage(from–0.5 to–1.0 V)during the set and reset processes,respectively.The analog RS behavior of the device was further investigated with appropriate pulse measurements to emulate vital synaptic functions,including long-term potentiation(LTP),long-term depression(LTD),spike-rate-dependent plasticity(SRDP),spike-timing-dependent plasticity(STDP),paired-pulse facilitation(PPF),paired-pulse depression(PPD)and post-tetanic potentiation(PTP).Overall,the detailed investigation of thickness-dependent GeSe monochalcogenide material indicates that it is a highly suitable candidate for use in highly scalable memory devices and electronic synapses for neuromorphic computing applications.Asif Ali Haider Abbas Muhammad Hussain Syed Hassan Abbas Jaffery Sajjad Hussain Changhwan Choi Jongwan Jung 2022Nano Research2022,15,3:0
12An Insight into Different Strategies for Control and Prophylaxis of Fasciolosis:A Review显示文摘Fasciolosis is one of the important diseases of livestock and has zoonotic importance.Fasciolosis can cause huge economic losses due to decrease in milk and meat production,decreased feed conversion ratio,and cost of treatment.Treatment and prophylaxis strategies for Fasciola infection are formed based on epidemiological data.The control of Fasciola infection can be attained by treating the animals with active anthelmintics.The use of different combinations of anthelmintics with a possible rotation is more effective against immature as well as adult flukes.Control of the intermediate host(snail)is vital for the reduction of fasciolosis.Due to the rapid growth of snails,the eradication is quite difficult in waterlogged and marshy areas.The use of different grazing methods and treatment of grazing areas can also help to control fasciolosis.A variety of antigens generated by Fasciola spp.have been shown to protect against liver fluke infection.The crude antigens,excretory/secretory,and refined antigens and their combination can be used as prophylactic treatment for the control of fasciolosis.The use of any of the single or combination of these methods can be very effective for the control of fasciolosis.Hafiz Muhammad Rizwan Muhammad Sohail Sajid Haider Abbas Sadia Ghazanfer Mamoona Arshad 2022Journal of Advances in International Veterinary Research2022,4,1:0
13Epidemiology and Control of Congo Fever in Sacrificial Animals of Pakistan显示文摘The cases and deaths due to Crimean-Congo haemorrhagic fever(CCHF)virus commonly known as Congo virus(fatality rate 15%)have been reported throughout Pakistan from the last few years especially during religious occasion,Eid-ul-Azha.The annual increase in death rates due to CCHF demonstrate the importance of awareness of Congo fever at academia as well as public level.The symptoms of Congo fever which appear one to nine days after tick bite,include sudden high fever,muscle aches,abdominal pain,headache,dizziness,sore eyes,jaundice,mood swings,confusion,aggression,and sensitivity to light.The other signs include sore throat,joint pain,vomiting,diarrhea,hemorrhages,and bleeding from skin and large intestine.The Infection has been reported in many species of wild as well as domestic animals including hares,cattle,sheep,goats,dogs,mice and hedgehogs.At least 31 species of Hyalomma,Boophilus,Rhipicephalus,Dermacentor(Ixodidae:hard ticks)act as vector of CCHF in which transovarial,transstadial and venereal transmission occurs.The virus attacks the immune system of the host and influences the immune cells.The Congo fever virus can be isolated from blood,plasma and many body tissues(kidneys,liver,spleen,lungs,brain and bone marrow).Mice inoculation,enzyme-linked immunosorbent assay(ELISA),reverse transcription polymerase chain reaction(RT-PCR)can be used for detection of the infection.Furthermore,IgM and IgG antibodies against CCHFV can also be detected and quantified.Education of general public,tick control with acaricides,use of anti-CCHFV immunoglobulin,usage of approved repellents to prevent tick bites,wearing neutral-coloured garments,application of a permethrin spray to the clothing,avoiding tall grasses and shrubs,applying sunscreen,avoiding direct contact with the blood or tissues of animals are the factors for successful prevention of the infection.Hafiz Muhammad Rizwan Muhammad Sohail Sajid Haider Abbas Muhammad Fiaz Qamar Qaiser Akram Mahvish Maqbool 2019Veterinary Science Research2019,1,2:0
14National guidelines for the diagnosis and treatment of hilar cholangiocarcinoma显示文摘A consensus meeting of national experts from all major national hepatobiliary centres in the country was held on May 26,2023,at the Pakistan Kidney and Liver Institute&Research Centre(PKLI&RC)after initial consultations with the experts.The Pakistan Society for the Study of Liver Diseases(PSSLD)and PKLI&RC jointly organised this meeting.This effort was based on a comprehensive literature review to establish national practice guidelines for hilar cholangiocarcinoma(hCCA).The consensus was that hCCA is a complex disease and requires a multidisciplinary team approach to best manage these patients.This coordinated effort can minimise delays and give patients a chance for curative treatment and effective palliation.The diagnostic and staging workup includes high-quality computed tomography,magnetic resonance imaging,and magnetic resonance cholangiopancreato-graphy.Brush cytology or biopsy utilizing endoscopic retrograde cholangiopancreatography is a mainstay for diagnosis.However,histopathologic confirmation is not always required before resection.Endoscopic ultrasound with fine needle aspiration of regional lymph nodes and positron emission tomography scan are valuable adjuncts for staging.The only curative treatment is the surgical resection of the biliary tree based on the Bismuth-Corlette classification.Selected patients with unresectable hCCA can be considered for liver transplantation.Adjuvant chemotherapy should be offered to patients with a high risk of recurrence.The use of preoperative biliary drainage and the need for portal vein embolisation should be based on local multidisciplinary discussions.Patients with acute cholangitis can be drained with endoscopic or percutaneous biliary drainage.Palliative chemotherapy with cisplatin and gemcitabine has shown improved survival in patients with irresectable and recurrent hCCA.Faisal Saud Dar Zaigham Abbas Irfan Ahmed Muhammad Atique Usman Iqbal Aujla Muhammad Azeemuddin Zeba Aziz Abu Bakar Hafeez Bhatti Tariq Ali Bangash Amna Subhan Butt Osama Tariq Butt Abdul Wahab Dogar Javed Iqbal Farooqi Faisal Hanif Jahanzaib Haider Siraj Haider Syed Mujahid Hassan Adnan Abdul Jabbar Aman Nawaz Khan Muhammad Shoaib Khan Muhammad Yasir Khan Amer Latif Nasir Hassan Luck Ahmad Karim Malik Kamran Rashid Sohail Rashid Mohammad Salih Abdullah Saeed Amjad Salamat Ghias-un-Nabi Tayyab Aasim Yusuf Haseeb Haider Zia Ammara Naveed 2024World Journal of Gastroenterology2024,30,9:0
15Antagonistic Potential of Bacterial Species against Fungal Plant Pathogens(FPP)and Their Role in Plant Growth Promotion(PGP):A Review显示文摘Since the 19th century to date,the fungal pathogens have been involved in causing devastating diseases in plants.All types of fungal pathogens have been observed in important agricultural crops that lead to significant pre and postharvest losses.The application of synthetic fungicide against the fungal plant pathogens(FPP)is a traditional management practice but at the same time these fungicides kill other beneficial microbes,insects,animal,and humans and are harmful to environment.The antagonistic microorganism such as bacteria are being used as an alternate strategy to control the FPP.These antagonistic species are cost-effective and eco-friendly in nature.These biocontrol bacteria have a broad mechanism against fungal pathogens present in the phyllosphere and rhizosphere of the plant.The antagonistic bacteria have different strategies against the FPP,by producing siderophore,biofilm,volatile organic compounds(VOCs),through parasitism,antibiosis,competition for limited resources and induce systemic resistance(ISR)in the host plant by activating the immune systems.The commercial bio-products synthesized by the major bacterial species Pseudomonas syringae,Burkholderia cepacia,Streptomyces griseoviridis,Pseudomonas fluorescens and Bacillus subtilis are used to control Fusarium,Pythium,Rhizoctonia,Penicillium,Alternaria,and Geotrichum.The commercial bio-formulations of bacteria act as both antifungal and plant growth regulators.The Plant growth-promoting rhizobacteria(PGPR)played a significant role in improving plant health by nitrogen-fixing,phosphorus solubilization,phytohormones production,minimizing soil metal contamination,and by ACC deaminase antifungal activities.Different articles are available on the specific antifungal activity of bacteria in plant diseases.Therefore,this review article has summarized the information on biocontrol activity of bacteria against the FPP and the role of PGPR in plant growth promotion.This review also provided a complete picture of scattered information regarding antifungal activities of bacteria and the role of PGPR.Amjad Ali Yasir Iftikhar Mustansar Mubeen Haider Ali Muhammad Ahmad Zeshan Zohaib Asad Muhammad Zafar-ul-Hye Malik Abdul Rehman Mazhar Abbas Muhammad Rafique Muhammad Usman Ghani 2022Phyton-International Journal of Experimental Botany2022,91,9:0
16Studying the Properties of Lightweight Concrete Using Construction Materials Waste显示文摘Aamer Najim Abbas Hussain Haider Abdulzahra 2015Journal of Environmental Science and Engineering(A)2015,4,6:0
17Yield and Profit from New and Old Wheat Varieties Using Certified and Farmer-Saved Seeds显示文摘Krishna Dev Joshi Attiq Ur Rehrnan Ghulam Ullah Amanullah Baloch Makhdoom Hussain Javed Ahmad Mohammad Ishaq Gulzar Ahmad Nadeem Abroad Syed Haider Abbas Maqsood Qamar Mumtaz Abroad Abid Ilyas Dar Badar-uddin Khokhar Muhammad Sajid Akhlaq Hussain Muhammad Imtiaz 2016Journal of Agricultural Science and Technology(B)2016,6,3:0
18Optimizing the thickness of Ta_(2)O_(5) interfacial barrier layer to limit the oxidization of Ta ohmic interface and ZrO_(2) switching layer for multilevel data storage显示文摘The multilevel storage capability of nonvolatile resistive random access memory(ReRAM)is greatly de-sired to accomplish high functioning memory density.In this study,Ta_(2)O_(5) thin film with different thick-nesses(2,4,and 6 nm)was exploited as an appropriate interfacial barrier layer for limiting the formation of the interfacial layer between the 10 nm thick sputtering deposited resistive switching(RS)layer and Ta ohmic electrode to improve the switching cycle endurance and uniformity.Results show that lower form-ing voltage,narrow distribution of SET-voltages,good dc switching cycles(10^(3)),high pulse endurance(10^(6) cycles),long retention time(10^(4) s at room temperature and 100℃),and reliable multilevel resis-tance states were obtained at an appropriate thickness of∼2 nm Ta_(2)O_(5) interfacial barrier layer instead of without Ta_(2)O_(5) and with∼4 nm,and∼6 nm Ta_(2)O_(5) barrier layer,ZrO_(2)-based memristive devices.Besides,multilevel resistance states have been scientifically investigated via modulating the compliance current(CC)and RESET-stop voltages,which displays that all of the resistance states were distinct and stayed stable without any considerable deprivation over 10^(4) s retention time and 104 pulse endurance cycles.The I-V characteristics of RESET-stop voltage(from−1.7 to−2.3 V)of HRS are found to be a good linear fit with the Schottky equation.It can be seen that Schottky barrier height rises by increasing the stop-voltage during RESET-operation,resulting in enhancing the data storage memory window(on/offratio).Moreover,RESET-voltage and CC control of HRS and LRS revealed the physical origin of the RS mecha-nism,which entails the formation and rupture of conducting nanofilaments.It is thoroughly investigated that proper optimization of the barrier layer at the ohmic interface and the switching layer is essential in memristive devices.These results demonstrate that the ZrO_(2)-based memristive device with an optimized∼2 nm Ta_(2)O_(5) barrier layer is a promising candidate for multilevel data storage memory applications.Muhammad Ismail Haider Abbas Chandreswar Mahata Changhwan Choi Sungjun Kim 2022Journal of Materials Science & Technology2022,,11:0
19Production of Non-Structural Concrete Using Different Types of Waste Materials显示文摘Asst. prof. Aamer Najlm Abbas Eng. Hussain Haider Abdulzahra 2015材料科学与工程(中英文B版)2015,5,5:0
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