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7篇 您的检索式:作者名="Muhammad Naveed Tahir"
    题名 作者 年代 出处 被引量
1黄土高原半干旱偏旱区草粮轮作田土壤水分恢复效应模拟显示文摘采用实地调查和EPIC模型相结合的方法,模拟研究了黄土高原半干旱偏旱区不同草粮轮作模式的土壤水分恢复效应.结果表明:多年生苜蓿地和苜蓿翻耕后种植粮食作物农田0~10m土层土壤湿度调查值与模拟值间的相关系数均超过0.9(P<0.01),相对均方根误差在0.05~0.16,相对误差均低于10%;模拟与实测的土壤湿度剖面分布变化趋势一致.在黄土高原半干旱偏旱区,苜蓿地深层土壤干层恢复难度较大,在种植苜蓿期间应避免8~10m土层土壤湿度降到5.7%以下.苜蓿地适宜种植年限为4~6a,最长不应超过8a.苜蓿翻耕后适宜采用马铃薯→马铃薯→春小麦轮作模式进行土壤水分恢复,32~33a后可以再次种植苜蓿.王学春 李军 方新宇 孙剑 Muhammad Naveed Tahir 2011应用生态学报2011,22,1:8
2国外农业航空静电喷雾技术研究进展与借鉴显示文摘农业航空静电喷雾技术作为中国发展精准农业航空应用技术的内容之一,对农药的有效利用和减少环境污染有积极意义。农业航空静电喷雾技术在国外发展较早也相对成熟,美国已有应用于有人机的商业化产品,并在美国、巴西等国各类粮食作物、经济作物和杂草防治作业中开展了大规模田间应用。该研究首先从基础研究、田间应用和优化工作等方面梳理了国外农业航空静电喷雾技术的研究进展,分析了农业航空静电喷雾技术在增加雾滴沉积、减少飘移和具备低施药液量等方面的优势。在此基础上结合中国植保无人机快速发展的实际对研究和应用适合中国国情的农业航空静电喷雾技术进行思考,提出了农业航空静电喷雾技术的研究路线,最后从采用接触式等非感应式充电方式、开发农业航空静电喷雾的测量技术,以及思考荷质比作为衡量指标的意义等方面探讨了可进行深入研究的方向。中国农业航空静电喷雾技术研究特别在植保无人机静电喷雾技术方面的研究与应用有很大的发展空间,可参考国外经验,围绕航空静电喷雾技术的基础性研究、田间试验、成果转化、示范推广和服务指导全方面制定发展规划,把单一强调对雾滴带电的实现转向对技术系统的整体研究。张亚莉 黄鑫荣 王林琳 邓继忠 曾文 兰玉彬 Muhammad Naveed Tahir 2021农业工程学报2021,37,6:7
3Comparative assessment of clinical profile and outcomes after primary percutaneous coronary intervention in young patients with single vs multivessel disease显示文摘BACKGROUND Even though percutaneous coronary intervention(PCI)improved the survival of patients with acute myocardial infarction,still multivessel coronary artery disease remains an important factor burdening prognosis and it is being associated with a worse prognosis compared to single-vessel disease(SVD).AIM To compare the clinical profile and outcomes after the primary PCI in young patients with SVD vs multivessel disease(MVD).METHODS The retrospective cohort of patients were divided into two groups:SVD and MVD group.The study population consisted of both male and female young(≤45 years)patients presented with ST-elevation myocardial infarction(STEMI)at the National Institute of Cardiovascular Disease,Karachi,Pakistan and undergone primary PCI from 1 st July 2017 to 31 st March 2018.Pre and postprocedure management of the patients was as per the guidelines and institutional protocols.RESULTS A total of 571 patients with STEMI,≤45 years were stratified into two groups by the number of vessels involved,342(59.9%)with SVD and 229(40.1%)with MVD.The average age of these patients was 39.04±4.86 years.A lower prevalence of hypertension and diabetes was observed in SVD as compare to MVD group(25.1%vs 38%,P<0.01;11.7%vs 27.5%,P<0.001)respectively.While,smoking was more prevalent among the SVD group as compare to MVD group(36.3%vs 28.4%,P=0.05).The high-C Lesion was observed in a significantly higher number of younger patients with MVD as compared to SVD group(48.8%vs 39.2%,P=0.021).Post-procedure thrombolysis in myocardial infarction flow grade was found to be not associated with the number of diseased vessels with a P value of 0.426 and thrombolysis in myocardial infarction flow grade III was observed in 98%vs 96.5%of the patients is SVD vs MVD group.CONCLUSION The MVD comprised of around 40%of the young patients presented with STEMI.Also,this study shows that diabetes and hypertension have a certain role in the pathogenesis of multivessel diseases,therefore,preventive measures for diabetes and hypertension can be effective strategies in reducing the burden of premature STEMI.Atif Sher Muhammad Tariq Ashraf Ayaz Mir Syed Alishan Faiza Farooq Ali Ammar Musa Karim Syed Nadeem Hassan Rizvi Tahir Saghir Jawaid Akbar Sial Naveed Ullah Khan 2020World Journal of Cardiology2020,12,4:1
4In vitro biological screening of the stem of Desmodium elegans显示文摘Objective:To explore the medicinal importance of the stem of Desmodium elegans,methanolic extract,and its different solvent fractions were evaluated for brine shrimp lethality,insecticidal and phytotoxicity,antifungal,and antibacterial activities.Methods:The methanolic extract and its solvent fractions were tested for cytotoxic,phytotoxic,insecticidal,antifungal,and antibacterial effects using our previous published protocols.Results:The methanolic,DCM,ethyl acetate and n-butanol fractions exhibited insecticidal effect against Callosobruchus analis and Rhyzopertha dominie.The methanolic extract,n-hexane,DCM ethyl acetate and n-butanol showed 75,85,85,65 and 5%phytotoxicity at the tested concentration of 500μg/ml.respectively.The solvent fractions(DCM and ethyl acetate)were effective against F.solani(10%and 20%,inhibition respectively).All the tested samples were devoid of cytotoxic and antibacterial effects.Conclusions:It was concluded diat diis plant can be practiced for control of weeds and insects.Arshad Khan Rabia Usman Ming-Liang Wang Abdur Rauf Naveed Muhammad Akhatar Aman Taha Hussein Musa Tahir 2013Asian Pacific Journal of Tropical Biomedicine2013,3,9:0
5Novel mutations in PDE6A and CDHR1 cause retinitis pigmentosa in Pakistani families显示文摘AIM:To investigate the genetic basis of autosomal recessive retinitis pigmentosa(arRP)in two consanguineous/endogamous Pakistani families.METHODS:Whole exome sequencing(WES)was performed on genomic DNA samples of patients with arRP to identify disease causing mutations.Sanger sequencing was performed to confirm familial segregation of identified mutations,and potential pathogenicity was determined by predictions of the mutations’functions.RESULTS:A novel homozygous frameshift mutation[NM_000440.2:c.1054delG,p.(Gln352Argfs*4);Chr5:g.149286886del(GRCh37)]in the PDE6A gene in an endogamous family and a novel homozygous splice site mutation[NM_033100.3:c.1168-1G>A,Chr10:g.85968484G>A(GRCh37)]in the CDHR1 gene in a consanguineous family were identified.The PDE6A variant p.(Gln352Argfs*4)was predicted to be deleterious or pathogenic,whilst the CDHR1 variant c.1168-1G>A was predicted to result in potential alteration of splicing.CONCLUSION:This study expands the spectrum of genetic variants for arRP in Pakistani families.Muhammad Dawood Siying Lin Taj Ud Din Irfan Ullah Shah Niamat Khan Abid Jan Muhammad Marwan Komal Sultan Maha Nowshid Raheel Tahir Asif Naveed Ahmed Muhammad Yasin Emma LBaple Andrew HCrosby Shamim Saleha 2021International Journal of Ophthalmology(English edition)2021,14,12:0
6Characteristics and Genesis of the Es_(1) Productive Sandstone Reservoir(Paleogene),Nanpu Sag,East China显示文摘The Shahejie Formation is a fundamental rock unit for hydrocarbon exploration and production in the Nanpu Sag,Bohai Bay Basin.Methodology including thin sectioning,core observations,fluorescence,scanning electron microscopy,cathodoluminescence,fluid inclusion,laser scanning confocal microscopy and geochemical analysis(C,O isotopes)were all utilized to investigate the reservoir characteristics and origin of the Es_(1)Sandstone.Thin section study showed that the reservoir rock consisted of feldspathic litharenite and lithic arkose.The reservoir pores are categorized as intergranular pores,fracture pores,dissolution pores and intergranular cement dissolution pores.The studied sandstone had good porosity(0.05%–35%)and permeability(0.006–7000 mD).The Es_(1) reservoir is classified as a fractured reservoir,a primary intergranular pore-associated reservoir and a dissolution reservoir.Deposition,diagenesis and tectogenesis are the main factors that played important roles in the development of the reservoir.Sedimentation is the foundation and assumption for reservoir development,but the effective reservoir is primarily controlled by primary pores,fractures,lithofacies,tectonic elements and dissolution pores.Moreover,compaction,fracture filling and cementation were the primary sources of reservoir densification.The reservoir was progressively formed through the influence of different geological and diagenetic events.The present study provides significant information and references for hydrocarbon exploration and development in the Nanpu Sag.Kashif MUHAMMAD CAO Yingchang Ahsan NAVEED Asif MUHAMMAD YUAN Guanghui XI Kelai ZHANG Shaomin XU Qisong MUsman TAHIR Isgandarov ORKHAN 2021Acta Geologica Sinica(English Edition)2021,95,3:0
7Introgression of Drought Tolerance into Elite Basmati Rice Variety through Marker-Assisted Backcrossing显示文摘Drought is one of the major abiotic threat to rice production in the context of climate change.Super Basmati is an elite,fine grain basmati rice variety grown in Punjab,Pakistan.Due to drought sensitive in nature,its yield has been facing an alarming situation in production because of gradual decrease in irrigated water for a couple of years.Three reported novel QTLs for drought tolerance were selected for incorporation into Super Basmati by employing marker assisted selection strategy.IR55419-04 with novel QTLs was used as a donor parent.Foreground selection was performed by applying PCR based QTL linked SSR markers followed by recombinant selection by using 2-4 flanking markers.Background selection was exercised by using polymorphic SSR markers for maximum genome recovery of the Super Basmati.The individuals homozygous at the target QTLs and with maximum background of Super Basmati at the rest of the non-target genome was selected for evaluation of drought tolerance.Under drought stress conditions,the yields of all introgressed lines(ILs)were 44.2%-125.7%higher than recurrent parent.Six superior ILs that are drought tolerant and very similar to Super Basmati in terms of agronomic and grain quality traits are marked for release as drought-tolerant varieties in arid regions or for use in breeding programs of high grain quality and drought-tolerant parents.Muhammad Sabar Shahzad Amir Naveed Shahid Masood Shah Abdul Rehman Khan Muhammad Musaddiq Shah Tahir Awan Muhammad Ramzan Khan Zaheer Abbas Muhammad Arif 2023Phyton-International Journal of Experimental Botany2023,92,5:0
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