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    题名 作者 年代 出处 被引量
1Gefitinib inhibits M2-1ike polarization of tumor- associated macrophages in Lewis lung cancer by targeting the STAT6 signaling pathway显示文摘Muhammad TARIQ Jie-qiong ZHANG Gui-kai LIANG Qiao-jun HE Ling DING Bo YANG 2017Acta Pharmacologica Sinica2017,38,11:18
2Sorption of ammonium and phosphate from aqueous solution by biochar derived from phytoremediation plants显示文摘The study on biochar derived from plant biomass for environmental applications is attracting more and more attention. Twelve sets of biochar were obtained by treating four phytoremediation plants, Salix rosthornii Seemen, Thalia dealbata, Vetiveria zizanioides, and Phragmites sp., sequentially through pyrolysis at 500 °C in a N2 environment, and under different temperatures(500, 600, and 700 °C) in a CO2 environment. The cation exchange capacity and specific surface area of biochar varied with both plant species and pyrolysis temperature. The magnesium(Mg) content of biochar derived from T. dealbata(TC) was obviously higher than that of the other plant biochars. This biochar also had the highest sorption capacity for phosphate and ammonium. In terms of biomass yields, adsorption capacity, and energy cost, T. dealbata biochar produced at 600 °C(TC600) is the most promising sorbent for removing contaminants(N and P) from aqueous solution. Therefore, T. dealbata appears to be the best candidate for phytoremediation application as its biomass can make a good biochar for environmental cleaning.Zheng ZENG Song-da ZHANG Ting-qiang LI Feng-liang ZHAO Zhen-li HE He-ping ZHAO Xiao-e YANG Hai-long WANG Jing ZHAO Muhammad Tariq RAFIQ 2013Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2013,14,12:17
3Structural, morphological, Raman, optical, magnetic, and antibacterial characteristics of CeO2 nanostructures显示文摘In this study, CeO_2 nanostructures were synthesized by a soft chemical method. A hydrothermal treatment was observed to lead to an interesting morphological transformation of the nanoparticles into homogeneous microspheres composed of nanosheets with an average thickness of 40 nm. Structural analysis revealed the formation of a single-phase cubic fluorite structure of CeO_2 for both samples. A Raman spectroscopic study confirmed the XRD results and furthermore indicated the presence of a large number of oxygen vacancies in the nanosheets. These oxygen vacancies led to room-temperature ferromagnetism(RTFM) of the CeO_2 nanosheets with enhanced magnetic characteristics. Amazingly, the nanosheets exhibited substantially greater antibacterial activity than the nanoparticles. This greater antibacterial activity was attributed to greater exposure of high-surface-energy polar surfaces and to the presence of oxygen vacancies.Fazal Abbas Javed Iqbal Tariq Jan Noor Badshah Qaisar Mansoor Muhammad Ismail 2016International Journal of Minerals,Metallurgy and Materials2016,23,1:6
4Importance of genetic evaluation and testing in pediatric cardiomyopathy显示文摘Pediatric cardiomyopathies are clinically heterogeneous heart muscle disorders that are responsible for significant morbidity and mortality. Phenotypes include hypertrophic cardiomyopathy, dilated cardiomyopathy, restrictive cardiomyopathy, left ventricular noncompaction and arrhythmogenic right ventricular cardiomyopathy. There is substantial evidence for a genetic contribution to pediatric cardiomyopathy. To date, more than 100 genes have been implicated in cardiomyopathy, but comprehensive genetic diagnosis has been problematic because of the large number of genes, the private nature of mutations, and difficulties in interpreting novel rare variants. This review will focus on current knowledge on the genetic etiologies of pediatric cardiomyopathy and their diagnostic relevance in clinical settings. Recent developments in sequencing technologies are greatly impacting the pace of gene discovery and clinical diagnosis. Understanding the genetic basis for pediatric cardiomyopathy and establishing genotypephenotype correlations may help delineate the molecular and cellular events necessary to identify potential novel therapeutic targets for heart muscle dysfunction in children.Muhammad Tariq Stephanie M Ware 2014World Journal of Cardiology2014,6,11:5
5Estimation and inter-comparison of dust aerosols based on MODIS, MISR and AERONET retrievals over Asian desert regions显示文摘This study presents detailed analysis of spatiotemporal variations and trend of dust optical properties i.e., Aerosol Optical Depth(AOD) and Angstrom component over Asian desert regions using thirteen years of data(i.e., 2001–2013) retrieved from Aerosol Robotic Network(AERONET), Moderate Resolution Imaging Spectroradiometer(MODIS) and Multi-angle Imaging Spectroradiometer(MISR). These regions include Solar Village, Dunhuang and Dalangzadgad and are considered as origin of desert aerosols in Asia. Mann–Kendall trend test was used to show the trend of AOD. The relationship of AOD with weather parameters and general AOD trend over different wavelengths has also been shown. AOD's trend has been observed significant throughout the year in Solar Village, while in Dunhuang and Dalanzadgad the significant trend has been found only in peak period(March–June).Analysis show high values of AOD and low values of angstrom in Solar Village during peak period. In Chinese desert regions, high values of AOD have been found during peak period and low values in pre-peak period. Significant relationship has been observed between AOD and average temperature in Solar Village and Dalanzadgad whereas rainfall and wind speed showed no significant impact on AOD in all desert regions.Ammara Habib Bin Chen Bushra Khalid Saichun Tan Huizheng Che Tariq Mahmood Guangyu Shi Muhammad Tahir Butt 2019Journal of Environmental Sciences2019,31,2:5
6珍珠岩对蚯蚓同步处理污泥-狐尾藻的研究显示文摘本研究利用太平二号蚯蚓构建生物反应器,以污水处理厂脱水污泥和粉绿狐尾藻作为研究对象,探究添加不同比例的珍珠岩对蚯蚓动物反应器处理混合物的减量化、无害化和资源化效果.结果表明,添加珍珠岩能够显著提高蚯蚓动物反应器同步处理污泥-狐尾藻的效率,经反应器处理后,混合物减量化效果明显,处理后产物的pH、有机质、碱解氮和重金属含量(Cu、Pb、Cr)均表现为明显下降,电导率(EC)和速效磷显著上升.经反应器处理后,产物品质符合在pH>6.5的中性和碱性土壤上的施用标准.结果显示,当珍珠岩添加比例为4%时,对动物反应器的实用性和经济性效果最佳.丁哲利 朱骏杰 赵和平 叶子期 曾峥 吴呈显 Muhammad Tariq Rafiq 杨肖娥 2014环境科学学报2014,34,5:4
7Slippery Photothermal Trap for Outstanding Deicing Surfaces显示文摘Ice accumulation is a safety and operational threat in power lines,wind turbines,and transportations.Surfaces having both passive anti-icing and active deicing functionalities are very rare.Here,we report a self-cleaning slippery photothermal trap,which is icephobic passively and deice the surfaces actively by converting sun light to heat at the ice-substrate interface.The photothermal trap consists of three layers:a candle soot layer act as solar radiation absorber,a magnetic iron oxide Fe_(3)O_(4) nanoparticles layer act as heat spreader for lateral dispersal of sun light,and Room Temperature Vulcanized(RTV)insulation to reduce the transverse heat loss.Upon illumination under microsolar 300,the temperature of the surface increased by 40℃ within 200 s.The heat confinement at the magnetic Fe_(3)O_(4) na-noparticles layer leads to rapid increase of the surface temperature,ice start to melt and silicone lubricant facilitates the ice removal.The slippery photothermal trap removed the frozen droplet(10 fiL)within 40 s upon the illumination of sun light and the frozen droplet was completely converted into water after 7 min illumination of solar light at-20℃.The developed slippery photothermal trap also melted the fully frost covered layer within 100 s at-20℃ under sunlamp.The average defrosted length(25 mm)was also observed by irradiation of laser light for 45 s.The self-cleaning slippery photothermal coating showed outstanding deicing performance at subzero temperature for long term due to the infusion of silicone oil into the nanostructures and same chemical composition with binder.Muhammad Imran Jamil Qiongyan Wang Amjad Ali Munir Hussain Tariq Aziz Xiaoli Zhan Qinghua Zhang 2021Journal of Bionic Engineering2021,18,3:3
8Predicting the presence of adenomatous polyps during colonoscopy with National Cancer Institute Colorectal Cancer Risk-Assessment Tool显示文摘AIM To evaluate the National Cancer Institute(NCI)Colorectal Cancer(CRC)Risk Assessment Tool as a predictor for the presence of adenomatous polyps(AP) found during screening or surveillance colonoscopy.METHODS This is a retrospective single center observational study.We collected data of adenomatous polyps in each colonoscopy and then evaluated the lifetime CRC risk.We calculated the AP prevalence across risk score quintiles,odds ratios of the prevalence of AP across risk score quintiles,area under curves(AUCs)and Youden’s indexes to assess the optimal risk score cut off value for AP prevalence status.RESULTS The prevalence of AP gradually increased throughout the five risk score quintiles:i.e.,27.63%in the first and 51.35%in the fifth quintile.The odd ratios of AP prevalence in the fifth quintile compared to the first and second quintile were 2.76[confidence interval(CI):1.71-4.47]and 2.09(CI:1.32-3.30).The AUC for all patients was 0.62(CI:0.58-0.66).Youden’s Index indicated the optimal risk score cutoff value discriminating AP prevalence status was 3.60.CONCLUSION Patients with the higher NCI risk score have higher risk of AP and subsequent CRC;therefore,measures to increase the effectiveness of CRC detection in these patients include longer withdrawal time,early surveillance colonoscopy,and choosing flexible colonoscopy over other CRC screening modalities.Hassan Tariq Muhammad Umar Kamal Harish Patel Ravi Patel Muhammad Ameen Shehi Elona Maram Khalifa Sara Azam Aiyi Zhang Kishore Kumar Ahmed Baiomi Danial Shaikh Jasbir Makker 2018World Journal of Gastroenterology2018,24,34:3
9Orange dye polyaniline composite based impedance humidity sensors显示文摘This study presents the fabrication and investigation of humidity sensors based on orange dye (OD) and polyaniline (PANI) composite films. A blend of 3 wt.% OD with 1 wt.% PANI was prepared in 1 ml water. The composite films were deposited on glass substrates between pre-deposited silver electrodes. The gap between the electrodes was 45 μm. The sensing mechanism was based on the impedance and capacitance variations due to the absorption/desorption of water vapor. It was observed that with the increase in relative humidity (RH) from 30% to 90%, the impedance decreases by 5.2 × 10 4 and 8.8 × 10 3 times for the frequencies of 120 Hz and 1 kHz, respectively. The impedance-humidity relationship showed a more uniform change compared to the capacitance-humidity relationship in the RH range of 30% to 90%. The consequence of annealing, measuring frequency, response and recovery time, and absorption-desorption behavior of the humidity sensor were also discussed in detail. The annealing resulted in an increase in sensitivity of up to 2.5 times, while the measured response time and recovery time were 34 s and 450 s, respectively. The impedance-humidity relationship was simulated.Muhammad Tariq Saeed Chani Kh. S. Karimov F. A. Khalid S. Z. Abbas M. B. Bhatty 2013Chinese Physics B2013,22,1:3
10Performance evaluation of multicast relay network using LDPC and convolutional channel codes along-with XOR network coding显示文摘In this paper,we have compared the performance of joint network channel coding(JNCC) for multicast relay network using low density parity check(LDPC) codes and Convolutional codes as channel codes while exclusive or(XOR) network coding used at the intermediate relay nodes.Multicast relay transmission is a type of transmission scheme in which two fixed relay nodes contribute in the second hop of end-to-end transmission between base transceiver station(BTS) and a pair of mobile stations.We have considered one way and two way multicast scenarios to evaluate the bit error rate(BER) and throughput performance.It has been shown that when using XOR network coding at the intermediate relay nodes,the same transmission becomes possible in less time slots hence throughput performance can be improved.Moreover we have also discussed two possible scenarios in the proposed system model,in which both diversity and multiplexing gain has been considered.It is worth notifying that BER and throughput achieved for LDPC codes is better than Convolutional codes for all the schemes discussed.Tariq Aziz Nasir Saleem Muhammad Iqba 2012The Journal of China Universities of Posts and Telecommunications2012,19,4:3
11Potentially harmful metals,and health risk evaluation in groundwater of Mardan,Pakistan:Application of geostatistical approach and geographic information system显示文摘This study investigates the values of pH,total dissolved solids(TDS),elevation,oxidative reduction potential(ORP),temperature,and depth,while the concentrations of Br,and potentially harmful metals(PHMs)such as Cr,Ni,Cd,Mn,Cu,Pb,Co,Zn,and Fe in the groundwater samples.Moreover,geographic information system(GIS),XLSTAT,and IBM SPSS Statistics 20 software were used for spatial distribution modeling,principal component analysis(PCA),cluster analysis(CA),and Quantile-Quantile(Q-Q)plotting to determine groundwater pollution sources,similarity index,and normal distribution reference line for the selected parameters.The mean values of pH,TDS,elevation,ORP,temperature,depth,and Br were 7.2,322 mg/L,364 m,188 mV,29.6℃,70 m,0.20 mg/L,and PHMs like Cr,Ni,Cd,Mn,Cu,Pb,Co,Zn,and Fe were 0.38,0.26,0.08,0.27,0.36,0.22,0.04,0.43 and 0.86 mg/L,respectively.PHMs including Cr(89%),Cd(43%),Mn(23%),Pb(79%),Co(20%),and Fe(91%)exceeded the guideline values set by the world health organization(WHO).The significant R^(2)values of PCA for selected parameters were also determined(0.62,0.67,0.78,0.73,0.60,0.87,-0.50,0.69,0.70,0.74,-0.50,0.70,0.67,0.79,0.59,and-0.55,respectively).PCA revealed three geochemical processes such as geogenic,anthropogenic,and reducing conditions.The mineral phases of Cd(OH)_(2),Fe(OH)_(3),FeOOH,Mn_(3)O_(4),Fe_(2)O_(3),MnOOH,Pb(OH)_(2),Mn(OH)_(2),MnO_(2),and Zn(OH)_(2)(-3.7,3.75,9.7,-5.8,8.9,-3.6,2.2,-4.6,-7.7,-0.9,and 0.003,respectively)showed super-saturation and under-saturation conditions.Health risk assessment(HRA)values for PHMs were also calculated and the values of hazard quotient(HQ),and hazard indices(HI)for the entire study area were increased in the following order:Cd>Ni>Cu>Pb>Mn>Zn>Cr.Relatively higher HQ and HI values of Ni,Cd,Pb,and Cu were greater than one showing unsuitability of groundwater for domestic,agriculture,and drinking purposes.The long-term ingestion of groundwater could also cause severe health concerns such as kidney,brain dysfunction,liver,stomach problems,and even cancer.Abdur Rashid Muhammad Ayub Asif Javed Sardar Khan Xubo Gao Chengcheng Li Zahid Ullah Tariq Sardar Juma Muhammad Shahla Nazneen 2021Geoscience Frontiers2021,12,3:2
12Prevalence of advanced liver fibrosis and steatosis in type-2 diabetics with normal transaminases:A prospective cohort study显示文摘BACKGROUND Nonalcoholic fatty liver disease(NAFLD)and type-2 diabetes mellitus(T2DM)have an intricate bidirectional relationship.Individuals with T2DM,not only have a higher prevalence of non-alcoholic steatosis,but also carry a higher risk of progression to nonalcoholic steatohepatitis.Experts still differ in their recommendations of screening for NAFLD among patients with T2DM.AIM To study the prevalence of NAFLD and advanced fibrosis among our patient population with T2DM.METHODS During the study period(November 2018 to January 2020),59 adult patients with T2DM and 26 non-diabetic control group individuals were recruited prospectively.Patients with known significant liver disease and alcohol use were excluded.Demographic data and lab parameters were recorded.Liver elastography was performed in all patients.RESULTS In the study group comprised of patients with T2DM and normal alanine aminotransferase levels(mean 17.8±7 U/L),81%had hepatic steatosis as diagnosed by elastography.Advanced hepatic fibrosis(stage F3 or F4)was present in 12%of patients with T2DM as compared to none in the control group.Patients with T2DM also had higher number of individuals with grade 3 steatosis[45.8%vs 11.5%,(P<0.00001)and metabolic syndrome(84.7%vs 11.5%,P<0.00001)].CONCLUSION A significant number of patients with T2DM,despite having normal transaminase levels,have NAFLD,grade 3 steatosis and advanced hepatic fibrosis as measured by liver elastography.Jasbir Makker Hassan Tariq Kishore Kumar Madhavi Ravi Danial Haris Shaikh Vivien Leung Umar Hayat Muhammad T Hassan Harish Patel Suresh Nayudu Sridhar Chilimuri 2021World Journal of Gastroenterology2021,27,6:2
13Bifunctional catalysts of Co3O4@GCN tubular nanostructured (TNS) hybrids for oxygen and hydrogen evolution reactions显示文摘为氧和氢进化反应(OER/HER ) 的催化剂在精力采购例如切开的水的可更新的绿色的心。尽管不可思议的努力被作了为 OER 和她开发有效催化剂,大挑战在 bifunctional 催化剂的发展尚待。这里,我们报导公司 3 在 graphitic 碳氮化物(GCN ) 的管状的 nanostructures 嵌入并且在低温度通过一个灵巧的、大规模化学方法综合了的 O 4 。在公司 3 O 4 和 GCN 为 OER 和她作为 bifunctional 催化剂导致了优秀性能。混血儿的高表面区域,唯一的管状的 nanostructure,和作文为催化作用使所有氧化还原作用地点容易可得到并且提供了更快的离子、电子的传导。公司 3 O 4@GCN 管状的 nanostructured (TNS ) 混血儿展出了最低过电位(0.12 V ) 和优秀当前的密度(在 OER 的 147 妈 / 厘米 2) ,比基准 IrO 2 和 RuO 2, 并且与在碱的媒介的优异耐久性好。而且,公司 3 O 4@GCN TNS 混血儿在她表明了优秀性能与低得多的发作和过电位,并且稳定的当前的密度。这被期望公司 3 在这研究开发的 O 4@GCN TNS 混血儿将是在大规模水切开和燃料房间的高贵金属催化剂的一种吸引人的选择。Muhammad Tahir Nasir Mahmood Xiaoxue Zhang Tariq Mahmood Faheem. K. Butt Imran Aslam M.Tanveer Faryal Idrees Syed Khalid Imran Shakir Yiming Yan Jijun Zou Chuanbao Cao Yanglong Hou 2015Nano Research2015,8,11:2
14Development of bis-thiobarbiturates as successful urease inhibitors and their molecular modeling studies显示文摘Bis-thiobarbiturate derivatives 1–15 have been synthesized, characterized by1 HNMR and EI-MS and screened for urease inhibition. All compounds showed various degree of urease inhibitory activity with IC_(50) values ranging 7.45 0.12 74.24 0.81 mmol/L while the standard thiourea behaved normally(IC_(50) = 21.10 0.12). Compounds 1(IC_(50) = 7.45 0.12 μmol/L), 9(IC_(50) = 18.17 1.03 μmol/L) and 13(IC_(50) = 8.61 0.45 μmol/L) showed excellent urease inhibitory activity in the series. Molecular modeling studies were performed to understand the binding site with the bimetallic nickel center of the enzyme.Structure-activity relationship has also been established for these compounds. This study identified bisthiobarbiturate as a novel class of urease inhibitors.Fazal Rahim Muhammad Ali Shifa Ullah Umer Rashid Hayat Ullah Muhammad Taha Muhammad Tariq Javed Wajid Rehman Aftab Ahmad Khan Obaid Ur Rahman Abid Muhammad Bilal 2016Chinese Chemical Letters2016,27,5:2
15Peripheral leukocyte and endometrium molecular biomarkers of inflammation and oxidative stress are altered in peripartal dairy cows supplemented with Zn,Mn,and Cu from amino acid complexes and Co from Co glucoheptonate显示文摘Background: Immune dysfunction and a higher risk of uterine infections are characteristics of the transition into lactation in dairy cows. The supply of complexed trace minerals, which are more bioavailable, could help overcome the greater needs of these nutrients in tissues around parturition and early lactation.Results: Twenty Holstein cows received an oral bolus with a mix of inorganic trace minerals(INO) or complexed trace minerals(AAC) to achieve 75, 65, 11, and 1 ppm supplemental Zn, Mn, Cu, and Co, respectively, in the total diet dry matter from -30 d through +30 d relative to parturition. Blood for polymorphonuclear leukocyte(PMNL) isolation was collected at-30,-15, +10, and + 30 d relative to parturition, whereas endometrium biopsies were performed at +14 and +30 d. Feeding AAC led to greater PMNL expression of genes related with inflammation response(DDX58), oxidative stress response(MPO), eicosanoid metabolism(PLA2G4A and ALOX5AP), transcription regulation(PPARG), and cellular adhesion(TLN1). The upregulation by AAC in endometrium of genes related with inflammation response( TLR2, TLR4, NFKB1, TNF, IL6, IL1 B, IL10, IL8), prostaglandin synthesis(PTGS2, PTGES), and antioxidant responses(NFE2 L2, SOD1) indicated a faster remodeling of uterine tissue and potentially greater capacity to control a local bacterial invasion.Conclusions: Data indicate that trace mineral supplementation from amino acid complexes improves PMNL activity and allows the prompt recovery of uterine tissue during early lactation. As such, the benefits of complexed trace minerals extend beyond an improvement of liver function and productive performance.Fernanda Batistel Johan S.Osorio Muhammad Rizwan Tariq Cong Li Jessica Caputo Michael T.Socha Juan J.Loor 2017Journal of Animal Science and Biotechnology2017,8,4:2
16Spatial cluster analysis of human cases of Crimean Congo hemorrhagic fever reported in Pakistan显示文摘Background:Crimean Congo hemorrhagic fever(CCHF)is a tick-borne viral zoonotic disease that has been reported in almost all geographic regions in Pakistan.The aim of this study was to identify spatial clusters of human cases of CCHF reported in country.Methods:Kulldorff’s spatial scan statisitc,Anselin’s Local Moran’s I and Getis Ord Gi*tests were applied on data(i.e.number of laboratory confirmed cases reported from each district during year 2013).Findings:The analyses revealed a large multi-district cluster of high CCHF incidence in the uplands of Balochistan province near it border with Afghanistan.The cluster comprised the following districts:Qilla Abdullah;Qilla Saifullah;Loralai,Quetta,Sibi,Chagai,and Mastung.Another cluster was detected in Punjab and included Rawalpindi district and a part of Islamabad.Conclusion:We provide empirical evidence of spatial clustering of human CCHF cases in the country.The districts in the clusters should be given priority in surveillance,control programs,and further research.Tariq Abbas Muhammad Younus Sayyad Aun Muhammad 2015Infectious Diseases of Poverty2015,4,1:2
17Construction of binary assembled MOF-derived nanocages with dual-band microwave absorbing properties显示文摘It is challenging to prepare a binary assembled metal-organic framework(MOF) by anisotropic epitaxial growth method. Besides, nanocages(NCs) with hollow structures are often constructed to improve microwave absorbing abilities. Herein, we combine the selective epitaxial growth and hollow engineering technologies to fabricate hybrid MOF-derived NCs. Benefiting from the unique nanocage/porous structure,complementary magnetic/dielectric components and suitable impedance matching characteristics, the optimized absorber(CoNi/TiO@PC-NCs) exhibits unique microwave absorbing properties. It is worth noting that the minimum reflection loss(RLmin) of the absorber reaches-65.3 dB, and the overall effective absorption bandwidth(EAB, RL <-10 dB) covers 15.1 GHz(2.9–18 GHz). The maximum EAB under a single thickness covers 4.4 GHz, displaying skipping dual-band coverages at both high and low frequencies. This work might provide a novel perspective for the synthesis of assembled MOF-derived absorbers.Fei Wu Lingyun Wan Ting Wang Muhammad Rizwan Tariq Tariq Shah Pei Liu Qiuyu Zhang Baoliang Zhang 2022Journal of Materials Science & Technology2022,,22:2
18腐植酸产品特性及其对真菌和植物生长的影响显示文摘天然腐植酸主要来自风化煤和褐煤等,其产品主要有Pak腐植酸盐、腐植酸盐肥料、PakHumax、Hum-kara和Humide等,它们在使用之前必须了解其功效。本研究比较了4种腐植酸肥料的理化性质、光学特性以及对小麦(栽培品种Sehr)、绿豆(绿豆-54)、玉米(C-12)和田菁种子萌发和生长的影响,同时研究了它们对4种真菌的影响。4种腐植酸肥料的含水量为52%~71.11%,溶解度为30.2%~98.2%,密度为1.67~4.17g/mL,2%腐植酸肥料水溶液pH值为5.39~10.11,EC值为3.140~1.143mS/cm。4种腐植酸肥料的碳含量为22.95%~36.56%、氮含量为0.658%~1.183%,相应的C/N比为30.91~44.16。将4种腐植酸肥料用0.1mol/LNaOH溶液溶解,分离获得腐植酸和黄腐酸,按含碳量计算,含碳量40.3%~77.5%的为腐植酸,含碳量22.5%~59.7%的为黄腐酸。对腐植酸在400nm、500nm、600nm和700nm下的光学性质进行了研究,并对465nm和665nm条件下的吸光度进行测量,计算其比值E4/E6(即消光系数)。结果表明,E4/E6比值变化在3.64~5.48之间,且光密度随着波长的增加而降低,与腐殖质的碳含量具有显著相关性。供试的4株真菌中,根据菌落直径观察,Tricho-dermaharzianum,T.hamatum和Alternariaalternate3种真菌在0.025%腐植酸培养基上生长最好。4种腐植酸肥料对小麦、玉米、绿豆种子萌发都有抑制作用,但对田菁种子萌发具有促进作用;对小麦和玉米的根具有促进生长的作用,同时可以提高小麦和玉米芽的干物质含量,而对绿豆和田菁没有影响。研究发现,巴基斯坦市场上销售的腐植酸肥料差异很大,为保障使用者的利益,对这些肥料进行质量监测十分必要。Asma Lodhi Shermeen Tahir Zafar Iqbal Ansar Mahmood Muhammad Akhtar Tariq Mahmood Qureshi Muhammad Yaqub Asif Naeem 董心亮 管天玉 林启美 2014腐植酸2014,,2:2
19Microfacies and Depositional Environments of Miocene Isolated Carbonate Platforms from Central Luconia, Offshore Sarawak, Malaysia显示文摘The Luconia Province-offshore Sarawak-is a key geological unit for understanding the distribution of hydrocarbon resources in Malaysia. Nevertheless, little effort has been made to address the palaeoenvironmental characteristics of the Tertiary carbonates in the key sector of Central Luconia.We study the sedimentology and petrography of core samples from a well in Central Luconia, for which thirteen microfacies have been identified reflecting different depositional settings. This is the first microfacies scheme elaborated for Luconian carbonates. Lithofacies and microfacies distribution are compatible with deposition in a reef complex, originating around a framework reef, within the euphotic zone. Sediments were deposited in environments of backreef, reef crest, and forereef. The fair weather wave base is marked by the presence of coralline red algae, foraminifera, decreasing degree of bioclast fragmentation and other microfacies features. As a result, a depositional-environmental model is constructed, depicting a reef complex built around a framework reef developed on the margin of an isolated platform. In addition, an innovative, preliminary time series analysis of facies, microfacies and depositional environment data reveal the existence of seasonal cycles in the stacking patterns of facies and microfacies.Hammad Tariq JANJUHAH José Antonio GáMEZ VINTANED Ahmed Mohamed Ahmed SALIM Ibrahima FAYE Mumtaz Muhammad SHAH Deva Prasad GHOSH 2017Acta Geologica Sinica(English Edition)2017,91,5:2
20Population Variation and Food Habits of Ranid Frogs in the Rice-Based Cropping System in Gujranwala Region,Pakistan显示文摘The current study aims to investigate the population variation and food habits of ranid frogs in the rice-based cropping system in District Gujranwala,Pakistan.The population in the study area was estimated using capture,mark and release method whereas food habits of the species were studied by analysis of stomach contents.The results showed the highest average population was found during August 2009(93.10±18.64/ha) while the lowest from December 2008 to February 2009.Maximum seasonal populations existed in summer 2009,whereas winter 2008 sizes were at a minimum.Stomach content analysis of the species revealed percent frequency(% F) of occurrence of insects(80.3),earthworms(28.5),whole frogs(15.8),bone pieces(22.5),rodents(1.66),vegetation(5.0),soil particles(13.3) and some unidentified material(7.5) in all the stomach samples.Most frequently consumed prey items were insects(30% by volume),although frogs also preyed upon conspecifics and rodents.Insects recovered from the stomach contents were identified as belonging to Orthoptera,Lepidoptera,Coleoptera,Diptera,Odonata and Homoptera as well as the class Archnida.Insects recovered from the stomach contents were compared to those captured from the study area.Saima Yousaf Tariq Mahmood Muhammad Rais Irfan Zia Qureshi 2010Asian Herpetological Research2010,1,2:2
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