|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Lead?Free Halide Double Perovskite Materials: A New Superstar Toward Green and Stable Optoelectronic Applications显示文摘Lead-based halide perovskites have emerged as excellent semiconductors for a broad range of optoelectronic applications, such as photovoltaics, lighting, lasing and photon detection. However, toxicity of lead and poor stability still represent significant challenges. Fortunately, halide double perovskite materials with formula of A_2M(I)M(III)X_6 or A_2M(IV)X_6 could be potentially regarded as stable and green alternatives for optoelectronic applications, where two divalent lead ions are substituted by combining one monovalent and one trivalent ions, or one tetravalent ion. Here, the article provides an up-to-date review on the developments of halide double perovskite materials and their related optoelectronic applications including photodetectors, X-ray detectors, photocatalyst, light-emitting diodes and solar cells. The synthesized halide double perovskite materials exhibit exceptional stability, and a few possess superior optoelectronic properties. However, the number of synthesized halide double perovskites is limited, and more limited materials have been developed for optoelectronic applications to date. In addition, the band structures and carrier transport properties of the materials are still not desired, and the films still manifest low quality for photovoltaic applications. Therefore, we propose that continuing e orts are needed to develop more halide double perovskites, modulate the properties and grow high-quality films, with the aim of opening the wild practical applications. | Liang Chu Waqar Ahmad Wei Liu Jian Yang Rui Zhang Yan Sun Jianping Yang Xing'ao Li | 2019 | Nano-Micro Letters2019，11，1： | 8 |
| 2 | Viable but nonculturable bacteria and their resuscitation:implications for cultivating uncultured marine microorganisms显示文摘Culturing has been the cornerstone of microbiology since Robert Koch first successfully cultured bacteria in the late nineteenth century. However, even today, the majority of microorganisms in the marine environment remain uncultivated. There are various explanations for the inability to culture bacteria in the laboratory, including lack of essential nutrients, osmotic support or incubation conditions, low growth rate, development of micro-colonies, and the presence of senescent or viable but nonculturable (VBNC) cells. In the marine environment, many bacteria have been associated with dormancy, as typified by the VBNC state. VBNC refers to a state where bacteria are metabolically active, but are no longer culturable on routine growth media. It is apparently a unique survival strategy that has been adopted by many microorganisms in response to harsh environmental conditions and the bacterial cells in the VBNC state may regain culturability under favorable conditions. The resuscitation of VBNC cells may well be an important way to cultivate the otherwise uncultured microorganisms in marine environments. Many resuscitation stimuli that promote the restoration of culturability have so far been identified;these include sodium pyruvate, quorum sensing autoinducers, resuscitation-promoting factors Rpfs and YeaZ, and catalase. In this review, we focus on the issues associated with bacterial culturability, the diversity of bacteria entering the VBNC state, mechanisms of induction into the VBNC state, resuscitation factors of VBNC cells and implications of VBNC resuscitation stimuli for cultivating these otherwise uncultured microorganisms. Bringing important microorganisms into culture is still important in the era of high-throughput sequencing as their ecological functions in the marine environment can often only be known through isolation and cultivation. | Xiao-Hua Zhang Waqar Ahmad Xiao-Yu Zhu Jixiang Chen Brian Austin | 2021 | Marine Life Science & Technology2021，3，2： | 6 |
| 3 | 甘蔗胁迫诱导表达基因ScCBF1的功能分析显示文摘以甘蔗苗为材料研究了甘蔗CBF1转录激活因子ScCBF1在水杨酸(SA)、茉莉酸甲酯(Me JA)以及重金属镉(Cd Cl_2)和铜(Cu Cl_2)胁迫下的表达情况;将ScCBF1的原核表达载体p GEX-6P-1-ScCBF1转化大肠杆菌(Escherichia coli)Rosetta(DE3),检测其在NaCl、PEG8000胁迫下的生长情况.结果表明:ScCBF1在Me JA、SA、Cd Cl_2以及Cu Cl_2逆境胁迫下表达下调;在500 mmol·L-1NaCl胁迫下,含有重组质粒的细胞生长速度显著减缓,不同浓度NaCl胁迫下的平板胁迫结果进一步说明了ScCBF1基因不具耐盐性;在15%PEG8000胁迫下,含有重组质粒细胞的生长速度明显高于对照,不同浓度PEG8000胁迫下的平板胁迫结果说明了ScCBF1基因在应答干旱胁迫中具有抗逆性.构建了ScCBF1的植物表达载体p CAMBIA1301-ScCBF1并通过农杆菌侵染在本氏烟叶片中瞬时表达,在4℃低温胁迫下,T0代烟草植株长势显著优于对照. | 成伟 程光远 彭磊 徐倩 董萌 WAQAR Ahmad 许莉萍 徐景升 | 2017 | 福建农林大学学报(自然科学版)2017，46，2： | 3 |
| 4 | Dimethoxymethane production via CO_(2)hydrogenation in methanol over novel Ru based hierarchical BEA显示文摘Dimethoxymethane(DMM),a diesel blend fuel,is being researched with high interest recently due to its unique fuel properties.It is commercially produced via a two step-process of methanol oxidation to make formaldehyde,followed by its condensation with methanol.This study presents a one-pot method of DMM synthesis from methanol mediated carbon dioxide hydrogenation over novel heterogeneous catalysts.The effect of catalyst pore structure was investigated by synthesizing 3 wt%Ru over novel hierarchical zeolite beta(HBEASX)and comparing against Ru doped commercial zeolite beta(CBEA)and desilicated hierarchical zeolite beta(HBZDS).The results showed that 3%Ru/HBEASX provided the best activity for DMM production due to its large average pore size.It also showed the decisive role of SiO_(2)/Al_(2)O_(3)molar ratio,with SiO_(2)/Al_(2)O_(3)=75 providing the highest DMM yield of 13.2 mmol/gcat.LMeOH with ca.100%selectivity.The activity of 3%Ru/HBEAS3 after 5 recycle steps demonstrated the reusability of this catalyst. | Waqar Ahmad Fan Liang Chan Abhijit Shrotri Yayati Naresh Palai Huanting Wang Akshat Tanksale | 2022 | Journal of Energy Chemistry2022，31，3： | 2 |
| 5 | In vivo screening of essential oils of Skimmia laureola leaves for antinociceptive and antipyretic activity显示文摘Objective:To study the screening of essential oils of Skimmia laureola leaves(SLO)for acute toxicity,antinociceptive,antipyretic and anticonvulsant activities in various animal models.Methods:SLO were extracted using modified Clevenger type apparatus.Acute toxicity test was used in mice to observe its safety level.Antinociceptive activity of SLO was evaluated in acetic acid induced writhing and hot plate tests.Yeast induced hyperthermic mice and pentylenetetrazole induced convulsive mice were used for the assessment of its antipyretic and anticonvulsant profile respectively.Results:Substantial safety was observed for SLO in acute toxicity test.SLO showed a high significant activity in acetic acid induced writhing test in a dose dependent manner with maximum pain attenuation of 68.48%at 200 mg/kg i.p.However,it did not produce any relief in thermal induced pain at test doses.When challenged against pyrexia evoked by yeast,SLO manifested marked amelioration in hyperthermic mice,dose dependently.Maximum anti-hyperthermic activity(75%)was observed at 200 mg/kg i.p.after 4 h of drug administration.Nevertheless,SLO had no effect on seizures control and mortality caused by pentylenetetrazole.Conclusions:In vivo studies of SLO showed prominent antinociceptive and antipyretic activities with ample safety profile and thus provided pharmacological base for the traditional uses of the plant in various painful conditions and pyrexia.Additional detail studies are required to ascertain its clinical application. | Naveed Muhammad Barkatullah Muhammad Ibrar Haroon Khan Muhammad Saeed Amir Zada Khan Waqar Ahmad Kaleem | 2013 | Asian Pacific Journal of Tropical Biomedicine2013，3，3： | 2 |
| 6 | Suppression of a core metabolic enzyme dihydrolipoamide dehydrogenase (dld ) protects against amyloid beta toxicity in C.elegans model of Alzheimer’s disease显示文摘A decrease in energy metabolism is associated with Alzheimer’s disease(AD),but it is not known whether the observed decrease exacerbates or protects against the disease.The importance of energy metabolism in AD is reinforced by the observation that variants of dihydrolipoamide dehydrogenase(DLD),is genetically linked to late-onset AD.To determine whether DLD is a suitable therapeutic target,we suppressed the dld-1 gene in Caenorhabditis elegans that express human Ab peptide in either muscles or neurons.Suppression of the dld-1 gene resulted in significant restoration of vitality and function that had been degraded by Ab pathology.This included protection of neurons and muscles cells.The observed decrease in proteotoxicity was associated with a decrease in the formation of toxic oligomers rather than a decrease in the abundance of the Ab peptide.The mitochondrial uncoupler,carbonyl cyanide 4-(trifluoromethoxy)phenylhydrazone(FCCP),which like dld-1 gene expression inhibits ATP synthesis,had no significant effect on Ab toxicity.Proteomics data analysis revealed that beneficial effects after dld-1 suppression could be due to change in energy metabolism and activation of the pathways associated with proteasomal degradation,improved cell signaling and longevity.Thus,some features unique to dld-1 gene suppression are responsible for the therapeutic benefit.By direct genetic intervention,we have shown that acute inhibition of dld-1 gene function may be therapeutically beneficial.This result supports the hypothesis that lowering energy metabolism protects against Ab pathogenicity and that DLD warrants further investigation as a therapeutic target. | Waqar Ahmad Paul R.Ebert | 2021 | Genes & Diseases2021，8，6： | 2 |
| 7 | HCV genotype distribution and possible transmission risks in Lahore, Pakistan显示文摘AIM: To investigate the prevalence of hepatitis C virus (HCV) genotypes and their association with possible transmission routes in the general population of Lahore, as the data exclusively related to this city is limited. METHODS: Complete data regarding patient's history, possible route of infection and biochemical tests was collected from the public hospital for 1364 patients. SPSS version 16 windows software was used for data analysis by univariate and multivariate techniques. RESULTS: Age range ≤ 40 years showed high prevalence of HCV infection. HCV genotype 3a was dominant (55.9%), followed by 1a (23.6%), 4a (12.5%), 3b (3.2%), untypable (2.5%), 4b (1.2%) and mixed type (1.2%). Blood transfusion, dental surgery and barber shops were the main risk factors for HCV transmission. Genotype prevalence was independent of age (P = 0.971) and gender (P = 0.122) while risk factors showed a significant association with age (P = 0.000) and genotypes (P = 0.000). We observed an independent association of risk factors and genotype 3a, while patients with genotype 1 and 4 were mostly infected due to dental surgery blood transfusion and barber shops. Risk factors of intravenous drug use and sexual exposure were exclusively found in ≤ 40 years age group. CONCLUSION: An increase in genotypes 1a and 4a suggest migration of people, possibly from Balochistan and the northern war-zone area. Government should focus on public education regarding infection routes. | Waqar Ahmad Bushra Ijaz Fouzia Tahir Javed Shah Jahan Imran Shahid Fawad Mumtaz Khan Sajida Hassan | 2010 | World Journal of Gastroenterology2010，16，34： | 2 |
| 8 | Characteristic absolute efficiency response curves of a high purity germanium detector in the energy range 50-1500 keV显示文摘 | Rajput M U Mahmud Abroad Waqar Ahmad | 2002 | Journal of Radioanalytical and Nuclear Chemistry2002，251，3： | 1 |
| 9 | Adsorptive potential of Acacia nilotica based adsorbent for chromium(Ⅵ) from an aqueous phase显示文摘The objective of this research was to enhance adsorption capacity of Acacia nilotica(keekar) sawdust for the abatement of chromium bearing wastewater and to investigate the effect of process parameters on adsorption capacity. The sawdust was activated by acid wash and functionalized subsequently with formaldehyde.Functionalization of activated sawdust raised its chromium removal efficiency of almost 10% as compared to its adsorption removal efficiency of HCl treated sawdust in a batch adsorption study. Adsorption kinetic data provided better fitting with pseudo second order model. Maximum adsorption capacity calculated through the best fitting Langmuir model was 6.34 mg·g^(-1) and 8.2 mg·g^(-1) for HCl treated and formaldehyde functionalized sawdust adsorbents, respectively. The adsorption of Cr(Ⅵ) was endothermic when studied by varying temperature from 20 °C to 50 °C for both activated and functionalized adsorbents. | Raza Khalid Zaheer Aslam Aamir Abbas Waqar Ahmad Naveed Ramzan Reyad Shawabkeh | 2018 | Chinese Journal of Chemical Engineering2018，26，3： | 1 |
| 10 | Interaction of the hepatitis C virus (HCV) core with cellular genes in the development of HCV-induced steatosis显示文摘 | Mahwish Khan Shah Jahan Saba Khaliq Bushra Ijaz Waqar Ahmad Baila Samreen Sajida Hassan | 2010 | Archives of Virology2010，，11： | 1 |
| 11 | High-performance large-area perovskite photovoltaic modules显示文摘Perovskite solar cells(Pero-SCs)exhibited a bright future for the next generation of photovoltaic technology because of their high power conversion efficiency(PCE),low cost,and simple solution process.The certified laboratory-scale PCE has reached 25.7%referred to small scale(<0.1 cm^(2))of Pero-SCs.However,with the increase of the area to module scale,the PCE drops dramatically mainly due to the inadequate regulation of growing large-area perovskite films.Therefore,there is a dire need to produce high-quality perovskite films for large-area photovoltaic modules.Herein,we summarize the recent advances in perovskite photovoltaic modules(PPMs)with particular attention paid to the coating methods,as well as the growth regulation of the high-quality and large-area perovskite films.Furthermore,this study encompasses future development directions and prospects for PPMs. | Liang Chu Shuaibo Zhai Waqar Ahmad Jing Zhang Yue Zang Wensheng Yan Yongfang Li | 2022 | Nano Research Energy2022，1，2： | 1 |
| 12 | Stable Huh-7 cell lines expressing non-structural proteins of genotype 1a of hepatitis C virus显示文摘 | Imran Shahid Sana Gull Bushra Ijaz Waqar Ahmad Muhammad Ansar Sultan Asad Humera Kausar Muhammad Tahir Sarwar Muhammad Kazim Khan Sajida Hassan | 2013 | Journal of Virological Methods2013，，1： | 1 |
| 13 | Water Gas Shift Reaction: A Monte Carlo Simulation显示文摘水气体移动(WGS ) 反应是工业重要性的一个过程。Inthis 反应碳一氧化物在催化表面上与水反应形成 CO2 和 H-2。我们学习这反应与热(Langmuir-Hinshelwood ) 并且非热(先锋和 Eley-Rideal ) 用蒙特卡罗的技术的反应机制计算机模拟。表面报道和生产率的细节作为公司部分压力的功能被给。从表面的表面以及他们的解吸附作用上的种类的散开也被介绍包括温度效果。系统的阶段图被拉了在表面上观察反应种类的行为。学习表明生产率是更高 fornon 热的先锋机制并且与试验性的发现一致。 | Waqar AHMAD Akhtar HUSSAIN | 2006 | Chinese Physics Letters2006，23，9： | 1 |
| 14 | New antibacterial pentacyclic triterpenes from Myricaria elegans Royle 显示文摘 | Ahmad Manzoor Ahmad Waqar Khan Salimullah | 2008 | J Enzym Inhib Med Ch2008，23，6： | 1 |
| 15 | Work function engineering to enhance open-circuit voltage in planar perovskite solar cells by g-C_(3)N_(4) nanosheets显示文摘Enhancement of open-circuit voltage(Voc)is an effective way to improve power conversion efficiency(PCE)of the perovskite solar cells(PSCs).Theoretically,work function engineering of TiO2 electron transport layer can reduce both the loss of Voc and current hysteresis in PSCs.In this work,two-dimensional g-C_(3)N_(4) nanosheets were adopted to modify the compact TiO2 layers in planar PSCs,which can finely tune the work function(WF)and further improve the energy level alignment at the interface to enhance the Voc and diminish the hysteresis.Meanwhile,the quality of perovskite films and charge transfer of the devices were improved by g-C_(3)N_(4) nanosheets.Therefore,the PCE of the planar PSCs was champed to 19.55%without obvious hysteresis compared with the initial 15.81%,mainly owing to the remarkable improvement of VOC from 1.01 to 1.11 V.In addition,the stability of the devices was obviously improved.The results demonstrate an effective strategy of W_(F) engineering to enhance Voc and diminish hysteresis phenomenon for improving the performance of PSCs. | Jian Yang Liang Chu Ruiyuan Hu Wei Liu Nanjing Liu Yuhui Ma Waqar Ahmad Xing’ao Li | 2021 | Nano Research2021，14，7： | 1 |
| 16 | Construction of Cryptographically Strong 8x8 S-boxes显示文摘 | lqtadar Hussain Tariq Shah Muhammad Asif Gondal Waqar Ahmad Khan | 2011 | World Applied Sciences2011，13，11： | 1 |
| 17 | First principle optoelectronic studies of visible light sensitive CZT显示文摘 | Imad Khan Rahnamaye Aliabad H A Waqar Ahmad | 2013 | Superlattices Microstructures2013，63，： | 1 |
| 18 | In vitro antibacterial activity of Vitis vinifera leaf extracts against some pathogenic bacterial strains显示文摘 | WAQAR AHMAD MUHAMMAD ILYAS KHAN MU HAMMAD WAQAR | 2014 | Advances in Biological Research2014，8，2： | 1 |
| 19 | Cyclopeptide alkaloids of Ziziphus oxyphylla Edgw as novel inhibitors of α-glucosidase enzyme and protein glycation显示文摘 | M. Iqbal Choudhary Achyut Adhikari Saima Rasheed Bishnu P. Marasini Nusrat Hussain Waqar Ahmad Kaleem Atta-ur-Rahman | 2011 | Phytochemistry Letters2011，，4： | 1 |
| 20 | Lithium nitrate regulated carbonate electrolytes for practical Li-metal batteries: Mechanisms, principles and strategies显示文摘Li-metal batteries(LMBs)regain research prominence owing to the ever-increasing high-energy requirements.Commercially available carbonate electrolytes exhibit unfavourable parasitic reactions with Limetal anode(LMA),leading to the formation of unstable solid electrolyte interphase(SEI)and the breed of Li dendrites/dead Li.Significantly,lithium nitrate(LiNO_(3)),an excellent film-forming additive,proves crucial to construct a robust Li_(3)N/Li_(2)O/Li_(x)NO_(y)-rich SEI after combining with ether-based electrolytes.Thus,the given challenge leads to natural ideas which suggest the incorporation of LiNO_(3) into commercial carbonate for practical LMBs.Regrettably,LiNO_(3) demonstrates limited solubility(~800 ppm)in commercial carbonate electrolytes.Thence,developing stable SEI and dendrite-free LMA with the incorporation of LiNO_(3) into carbonate electrolytes is an efficacious strategy to realize robust LMBs via a scalable and cost-effective route.Therefore,this review unravels the grievances between LMA,LiNO_(3)and carbonate electrolytes,and enables a comprehensive analysis of LMA stabilizing mechanism with LiNO_(3),dissolution principle of LiNO_(3) in carbonate electrolytes,and LiNO_(3) introduction strategies.This review converges attention on a point that the LiNO_(3)-introduction into commercial carbonate electrolytes is an imperious choice to realize practical LMBs with commercial 4 V layered cathode. | Kun Wang Wenbing Ni Liguang Wang Lu Gan Jing Zhao Zhengwei Wan Wei Jiang Waqar Ahmad Miaomiao Tian Min Ling Jun Chen Chengdu Liang | 2023 | Journal of Energy Chemistry2023，，2： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员