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| 1 | Personal Review:Sources of sulfide in waste streams and current biotechnologies for its removal显示文摘Sulfide-containing waste streams are generated by a number of industries. It is emitted into the environment as dis- solved sulfide (S2- and HS-) in wastewaters and as H2S in waste gases. Due to its corrosive nature, biological hydrogen sulfide removal processes are being investigated to overcome the chemical and disposal costs associated with existing chemically based removal processes. The nitrogen and sulfur metabolism interacts at various levels of the wastewater treatment process. Hence, the sulfur cycle offers possibilities to integrate nitrogen removal in the treatment process, which needs to be further optimized by appropriate design of the reactor configuration, optimization of performance parameters, retention of biomass and optimization of biomass growth. The present paper reviews the biotechnological advances to remove sulfides from various environments. | MAHMOOD Qaisar ZHENG Ping CAI Jing HAYAT Yousaf HASSAN Muhammad Jaffar WU Dong-lei HU Bao-lan | 2007 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2007，8，7： | 22 |
| 2 | 同步厌氧生物脱氮除硫工艺性能的研究显示文摘研究了同步厌氧生物脱氮除硫工艺的性能。该工艺具有很高的硫化物和硝酸盐转化潜能,稳态运行时的容积硫化物去除率和容积硝酸盐去除率分别为3.73kg/(m3.d)和0.80kg/(m3.d);能够耐受580mg/L的硫化物浓度和110mg/L的硝酸盐浓度,适宜浓度分别为280mg/L和67.5mg/L;能够耐受较高的水力负荷,适宜的水力停留时间为0.13d,反应器运行性能会因缩短水力停留时间而突发性恶化。 | 蔡靖 郑平 Qaisar Mahmood 黄可谈 傅磊 | 2006 | 生物工程学报2006，22，5： | 21 |
| 3 | Review:Assessing potential dietary toxicity of heavy metals in selected vegetables and food crops显示文摘Heavy metals, such as cadmium, copper, lead, chromium and mercury, are important environmental pollutants, particularly in areas with high anthropogenic pressure. Their presence in the atmosphere, soil and water, even in traces can cause serious problems to all organisms, and heavy metal bioaccumulation in the food chain especially can be highly dangerous to human health. Heavy metals enter the human body mainly through two routes namely: inhalation and ingestion, ingestion being the main route of exposure to these elements in human population. Heavy metals intake by human populations through food chain has been reported in many countries. Soil threshold for heavy metal toxicity is an important factor affecting soil environmental capacity of heavy metal and determines heavy metal cumulative loading limits. For soil-plant system, heavy metal toxicity threshold is the highest permissible content in the soil (total or bioavailable concentration) that does not pose any phytotoxic effects or heavy metals in the edible parts of the crops does not exceed food hygiene standards. Factors affecting the thresholds of dietary toxicity of heavy metal in soil-crop system include: soil type which includes soil pH, organic matter content, clay mineral and other soil chemical and biochemical properties; and crop species or cultivars regulated by genetic basis for heavy metal transport and accumulation in plants. In addition, the interactions of soil-plant root-microbes play important roles in regulating heavy metal movement from soil to the edible parts of crops. Agronomic practices such as fertilizer and water managements as well as crop rotation system can affect bioavailability and crop accumulation of heavy metals, thus influencing the thresholds for assessing dietary toxicity of heavy metals in the food chain. This paper reviews the phytotoxic effects and bioaccumulation of heavy metals in vegetables and food crops and assesses soil heavy metal thresholds for potential dietary toxicity. | ISLAM Ejaz ul YANG Xiao-e HE Zhen-li MAHMOOD Qaisar | 2007 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2007，8，1： | 18 |
| 4 | 脱氮除硫菌株的分离鉴定和功能确认显示文摘从长期稳定运行的脱氮除硫反应器污泥中,分离获得两株具有脱氮除硫功能的芽孢杆菌。经形态观察、生理试验和16SrDNA序列比对,将两菌株归入芽孢杆菌属,菌株CB归类于Bacillus pseudofirmus,菌株CS则与Bacillus hemicellulosilytus和Bacillus halodurans最为接近。以Biolog板检测,菌株CB的基质多样性不明显,菌株CS则可利用Biolog板中多种碳源。菌株CB和菌株CS都能以硝酸盐氧化硫化物,其中菌株CB对硝酸盐、硫化物的转化能力大于CS,菌株CB对硝酸盐的亲和力也大于菌株CS。 | 蔡靖 郑平 胡宝兰 Qaisar Mahmood | 2007 | 微生物学报2007，47，6： | 13 |
| 5 | The effects of aeration and irrigation regimes on soil CO_2 and N_2O emissions in a greenhouse tomato production system显示文摘Aerated irrigation has been proven to increase crop production and quality, but studies on its environmental impacts are sparse. The effects of aeration and irrigation regimes on soil CO_2 and N_2O emissions in two consecutive greenhouse tomato rotation cycles in Northwest China were studied via the static closed chamber and gas chromatography technique. Four treatments, aerated deficit irrigation(AI1), non-aerated deficit irrigation(CK1), aerated full irrigation(AI2) and non-aerated full irrigation(CK2), were performed. The results showed that the tomato yield under aeration of each irrigation regime increased by 18.8% on average compared to non-aeration, and the difference was significant under full irrigation(P<0.05). Full irrigation significantly increased the tomato yield by 23.9% on average in comparison to deficit irrigation. Moreover, aeration increased the cumulative CO_2 emissions compared to non-aeration, and treatment effects were significant in the autumn-winter season(P<0.05). A slight increase of CO_2 emissions in the two seasons was observed under full irrigation(P>0.05). There was no significant difference between aeration and non-aeration in soil N_2O emissions in the spring-summer season, whereas aeration enhanced N_2O emissions significantly in the autumn-winter season. Furthermore, full irrigation over the two seasons greatly increased soil N_2O emissions compared to the deficit irrigation treatment(P<0.05). Correlation analysis indicated that soil temperature was the primary factor influencing CO_2 fluxes. Soil temperature, soil moisture and NO_3~– were the primary factors influencing N_2O fluxes. Irrigation coupled with particular soil aeration practices may allow for a balance between crop production yield and greenhouse gas mitigation in greenhouse vegetable fields. | CHEN Hui HOU Hui-jing WANG Xiao-yun ZHU Yan Qaisar Saddique WANG Yun-fei CAI Huan-jie | 2018 | Journal of Integrative Agriculture2018，17，2： | 11 |
| 6 | Lead Induced Changes in the Growth and Antioxidant Metabolism of the Lead Accumulating and Non-accumulating Ecotypes of Sedum alfredii显示文摘The phytotoxicity and antioxidative adaptations of lead (Pb) accumulating ecotype (AE) and non-accumulating ecotype (NAE) of Sedum alfredii Hance were investigated under different Pb treatments involving 0,0.02 mmol/L Pb,0.1 mmol/L Pb and 0.1 mmol/L Pb/0.1 mmol/L ethylenediaminetetraacetic acid (EDTA) for 6 days. With the increasing Pb level,the Pb concentration in the shoots of AE plants enhanced accordingly, and EDTA supply helped 51% of Pb translocation to shoots of AE compared with those treated with 0.1 mmol/L Pb alone. Moreover, the presence of EDTA alleviated Pb phytotoxicity through changes in plant biomass, root morphology and chlorophyll contents. Lead toxicity induced hydrogen peroxide (H2O2) accumulation and lipid peroxidation in both ecotypes of S. alfredii. The activities of superoxide dismutase (SOD), guaiacol peroxidase (G-POD), ascorbate peroxidase, and dehydroascorbate reductase elevated in both leaves and roots of AE as well as in leaves of NAE with the increasing Pb levels, but SOD and G-POD declined in roots of NAE. Enhancement in glutathione reductase activity was only detected in roots of NAE while a depression in catalase activity was recorded in the leaves of NAE. A significant enhancement in glutathione and ascorbic acid (AsA) levels occurred in both ecotypes exposed to Pb and Pb/EDTA treatment compared with the control, however, the differences between these two treatments were insignificant. The dehydroascorbate (DHA) contents in roots of both ecotypes were 1.41 to 11.22-fold higher than those in leaves, whereas the ratios of AsA to DHA (1.38 to 6.84) in leaves altering more to the reduced AsA form were much higher than those in roots. These results suggested that antioxidative enzymes and antioxidants play an important role in counteracting Pb stress in S. alfredii. | Dan Liu Ting-Qiang Li Xiao-Fen Jin Xiao-E Yang Ejazul Islam Qaisar Mahmood | 2008 | Journal of Integrative Plant Biology2008，50，2： | 10 |
| 7 | Anoxic biodegradation of dimethyl phthalate (DMP) by activated sludge cultures under nitrate-reducing conditions显示文摘plasticized 塑料的全球广泛的使用在不同环境导致了 phthalatespollution。从工业和农业的硝酸盐广泛地也在土壤,自然的水和 wastewaters.Dimethyl 被传播由在减少硝酸盐的条件下面的活性污泥文化的 phthalate (DMP ) 简历降级被调查。在一个优化条件下面, DMP 是简历在与一阶的动力学适合很好的缺氧的条件和它的反应下面在 56 h 从 102.20 mg/L 降级了到无法发现的水平。用高效的液体层析( HPLC )和液体层析,质谱法(最小公倍数)分析, mono-methylphthalate ( MMP )和酞酸酸( PA )作为 DMPbiodegradation.When 的中介与化学的氧需求(COD_( Cr ))的决心相结合的专业被检测移动能力和 pH , DMP 被发现在缺氧的 conditions.Thebiodegradation 下面完全被使矿物化当到消费的硝酸盐的 DMP 的DMP->MMP->PA->... ->CO2 + H2O.The 臼齿的比率被发现是 9.0:1 ,小径被建议,它由减少硝酸盐的细菌与 DMP 简历降级的理论 stoichiometric 价值同意很好。非线性的模拟的结果证明为降级的最佳 pH 和温度分别地是 7.56 和 31.4 ℃。 | WU Dong-lei HU Bao-lan ZHENG Ping Qaisar Mahmood | 2007 | Journal of Environmental Sciences2007，19，10： | 6 |
| 8 | 关中地区夏玉米和冬小麦不同蒸发蒸腾量估算方法的研究显示文摘参考作物蒸发蒸腾量(ET0)是精准估算作物需水量、提高农田水分利用效率的重要依据。基于2013-2017年的田间试验数据以及相关气象观测资料,采用5种计算ET0的方法计算关中地区日平均ET0和年平均ET0,采用Origin对ET0及环境因子进行相关分析,使用标准误差估计(SSE)和决定系数r^2,在FAO-56 PM和其他4种简单替代方法之间进行比较。结果表明:对ET0和气象因子的标准分数的分析表明,ET测量值和5种方法的估计值均高度依赖于太阳辐射和温度,但与相对湿度和风速的关系较小。对5种ET0估算方法,即:FAO-56 Penman-Monteith(FAO-56 PM)、Penman-Monteith(PM)、Priestly-Taylor(PT)、Mankink(MK)和Hargreaves(HG)进行了评估。统计分析表明PM可代替FAO-56 PM方法来预测该地区的ET0值。这与作物蒸发蒸腾量(ETC)的准确估计直接相关,这也取决于作物生理特征和发育阶段、天气参数、环境条件和管理实践。 | Linvolak Pich 蔡焕杰 Qaisar Saddique 王云霏 Sereyrorth Ouk 彭雄标 Saleh Shahriar | 2019 | 节水灌溉2019，0，8： | 6 |
| 9 | Structural, 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 | 2016 | International Journal of Minerals,Metallurgy and Materials2016，23，1： | 6 |
| 10 | Isolation and characteristics of Arthrobacter sp.strain CW-1 for biodegradation of PAEs显示文摘Isolation of new bacterial strains and recognition of their metabolic activities are highly desirable for sustainability of natural ecosystems. Biodegradation of dimethyl phthalate (DMP) under anoxic conditions has been shown to occur as a series of sequential steps using strain CW-1 isolated from digested sludge of Sibao Wastewater Treatment Plant in Hangzhou,China. The microbial colony on LB medium was yellowish,3~5 mm in diameter,convex in the center,and embedded in mucous externally. The individual cells of strain CW-1 are irregular rods,measuring (0.6~0.7)×(0.9~1.0) μm,V-shaped,with clubbed ends,Gram positive and without any filaments. 16S rDNA (1438 bp) sequence analysis showed that the strain was related to Arthrobacter sp. CW-1 and can degrade PAEs utilizing nitrate as electron acceptor,but cannot mineralize DMP completely. The degradation pathway was recommended as: dimethyl phthalate (DMP)→monomethyl phthalate (MMP)→phthalic acid (PA). DMP biodeg-radation was a first order reaction with degradation rate constant of 0.3033 d-1 and half-life 2.25 d. The DMP conversion to PA by CW-1 could be described by using sequential kinetic model. | MAHMOOD Qaisar | 2007 | Journal of Zhejiang University-Science A(Applied Physics & Engineering)2007，8，9： | 5 |
| 11 | Nitrogen transformations during co-composting of herbal residues,spent mushrooms,and sludge显示文摘Sewage sludge composting is an important environmental measure. The reduction of nitrogen loss is a critical aim of compost maturation, and the addition of spent mushrooms (SMs) and herbal residues (HRs) may be helpful. To evaluate the nitrogen transformations during co-composting of sewage sludge, SMs, and HRs, windrows were constructed in a residual processing plant. Dewatered sewage sludge and sawdust were mixed with SMs and HRs at two proportions on a fresh weight basis, 3:1:1 (sewage sludge:sawdust:SMs or HRs) and 3:1:2 (sewage sludge:sawdust:SMs or HRs). The mixture was then composted for 40 d. Changes in the physicochemical charac- teristic of sewage sludge during composting were recorded and analyzed. Addition of SMs and HRs accelerated the temperature rise, mediating a quicker composting maturation time compared to control. The addition also resulted in lower nitrogen losses and higher nitrate nitrogen levels in the compost products. Among the windrows, SM and HR addition improved the nitrogen status. The total nitrogen (TN) and nitrogen losses for SM and HR treatments ranged from 22.45 to 24.99 g/kg and from 10.2% to 22.4% over the control values (18.66-21.57 g/kg and 40.5%-64.2%, respectively). The pile with the highest proportion of SMs (3:1:2 (sewage sludge:sawdust:SMs)) had the highest TN level and the lowest nitrogen loss. The germination index (GI) values for all samples at maturity were above 80%, demonstrating optimal maturity. The addition of SMs and HRs augments sewage composting. | Dong-lei WU Ping LIU Yan-zhang LUO Guang-ming TIAN Qaisar MAHMOOD | 2010 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2010，11，7： | 4 |
| 12 | Multifunctional zinc ion doped sol-gel derived mesoporous bioactive glass nanoparticles for biomedical applications显示文摘Mesoporous bioactive glasses have been widely investigated for applications in bone tissue regeneration and,more recently,in soft tissue repair and wound healing.In this study we produced mesoporous bioactive glass nanoparticles(MBGNs)based on the SiO2-CaO system.With the intention of adding subsidiary biological function,MBGNs were doped with Zn2+ions.Zn-MBGNs with 8 mol%ZnO content were synthesized via microemulsion assisted sol-gel method.The synthesized particles were homogeneous in shape and size.They exhibited spherical shape,good dispersity,and a size of 130±10 nm.The addition of zinc precursors did not affect the morphology of particles,while their specific surface area increased in comparison to MBGNs.The presence of Zn2+ions inhibited the formation of hydroxycarbonate apatite(HCAp)on the particles after immersion in simulated body fluid(SBF).No formation of HCAp crystals on the surface of Zn-MBGNs could be observed after 14 days of immersion.Interestingly,powders containing relatively high amount of zinc released Zn2+ions in low concentration(0.6-1.2 mg L^−1)but in a sustained manner.This releasing feature enables Zn-MBGNs to avoid potentially toxic levels of Zn2+ions,indeed Zn-MBGNs were seen to improve the differentiation of osteoblast-like cells(MG-63).Additionally,Zn-MBGNs showed higher ability to adsorb proteins in comparison to MBGNs,which could indicate a favourable later attachment of cells.Due to their advantageous morphological and physiochemical properties,Zn-MBGNs show great potential as bioactive fillers or drug delivery systems in a variety of applications including bone regeneration and wound healing. | Zuzana Neščáková Kai Zheng Liliana Liverani Qaisar Nawaz Dagmar Galusková Hana Kaňková Martin Michálek Dušan Galusek Aldo R.Boccaccini | 2019 | Bioactive Materials2019，4，1： | 3 |
| 13 | Control strategy of shortcut nitrification显示文摘Shortcut nitrification for ammonium-rich wastewater is energy-saving and cost-effective procedure that has become one of the hotspots in the field of biological denitrogenation. An orthogonal experiment was performed to study the combined effects of operational parameters on the performance of internal-loop airlift bioreactor for shortcut nitrification. The optimum operational parameters for the shortcut nitrification were found as temperature 35℃, pH 8.0, dissolved oxygen concentration 1.0 mg/L, ammo- nium concentration 4 mmol/L and HRT 16 h, which have different influence on the performance of shortcut nitrification reactor. The pH, temperature and dissolved oxygen concentration have significant bearing on the process. The results showed that the shortcut nitrification reactor could be successfully started up within 42 d, and the reactor performance is steady with minimum NO2-/NOx- of 85.2%, maximum 93.4% and average value of 91.4% in effluent. Based on the analysis of experimental data, a new control strategy named “priority + combination” for shortcut nitrification was suggested. Through this strategy, the startup and operation of shortcut nitrification for ammonium-rich sludge digester liquids were optimized. The control strategy works well to keep the reactor operation in steady state and in achieving high-efficiency for shortcut nitrification. | QAISAR Mahmood | 2006 | Journal of Environmental Sciences2006，18，1： | 3 |
| 14 | 可快速精确定位CFRP板冲击损伤的等时周向轨迹法显示文摘考虑碳纤维增强树脂基复合材料(Carbon fiber reinforced plastic,CFRP)板的纤维铺层对称性和导波传播各项异性,提出一种快速、定位精确的CFRP冲击损伤的等时周向轨迹定位方法。以损伤指数与仿真计算的方式,确定CFRP板周向导波传播速度与损伤反射波的飞行时间后,依据换能器、传感器与损伤位置之间的三角函数关系,计算既满足CFRP板中导波各个方向的传播速度又满足飞行时间的似然点。线性拟合似然点形成等时周向轨迹曲线样条,根据CFRP板的铺层对称性,镜像了轨迹曲线样条形成闭合的等时周向轨迹曲线,以三曲线交点实现损伤定位。以四点矩形阵列斜对角激励的方式进行CFRP板的冲击损伤检测实验。其实验结果表明,损伤引起损伤指数值的增幅显著,损伤反射波飞行时间可准确获得。拟合轨迹所需似然点数仅为155个,具有较小的计算量。等时周向轨迹定位法的定位误差可控,在期望误差下定位精度良好,未超出损伤区域。 | 刘海龙 王晓煜 张树森 MUHAMMAD Qaisar 林盛 | 2022 | 复合材料学报2022，39，8： | 2 |
| 15 | Anatomical studies on water hyacinth (Eichhornia crassipes (Mart.) Solms) under the influence of textile wastewater显示文摘Water hyacinth (Eichhornia crassipes (Mart.) Solms) is a prolific free floating aquatic macrohpyte found in tropical and subtropical parts of the earth. The effects of pollutants from textile wastewater on the anatomy of the plant were studied. Water hyacinth exhibits hydrophytic adaptations which include reduced epidermis cells lacking cuticle in most cases, presence of large air spaces (7~50 μm), reduced vascular tissue and absorbing structures. Textile waste significantly affected the size of root cells.The presence of raphide crystals was noted in parenchyma cells of various organs in treated plants. | MAHMOOD Qaisar 郑平 SIDDIQI M. Rehan ISLAM Ejaz ul AZIM M. Rashid HAYAT Yousaf | 2005 | Journal of Zhejiang University-Science B(Biomedicine & Biotechnology)2005，6，10： | 2 |
| 16 | Strengths,weaknesses,opportunities,and threats(SWOT)analysis of supercapacitors:A review显示文摘The development of clean and sustainable energy sources has received widespread interest in the past few decades due to the rolling energy demands while extenuating the rising tiers of greenhouse gases and environmental pollution.Due to their intermittent nature,these green and sustainable sources require appropriate energy storage systems.Amongst different energy storage technologies,electrochemical energy storage devices,particularly supercapacitors(SCs),have fascinated global attention for their utilization in electric vehicles,power supports,portable electronics,and many others application requiring electric energy devices for their operation.Thus,the growth of SCs in the commercial market has squeezed requirements,and further developments are obligatory for their effective industrialization.In the meantime,SCs also face technical complications and contests for their introduction in industrial settings because of their low energy density and high Levelized cost.The present study combines core strengths,weaknesses,opportunities,and threats(SWOT)analysis of SCs with new perspectives and recent ideas.The challenges and the future progressive prospects of SCs are also presented in detail.This review will afford consistent direction and new superhighways for the further development of SCs as standalone and complementary energy storage systems. | Pragati A.Shinde Qaisar Abbas Nilesh R.Chodankar Katsuhiko Ariga Mohammad Ali Abdelkareem Abdul Ghani Olabi | 2023 | Journal of Energy Chemistry2023，，4： | 2 |
| 17 | Partial differential postcorrelation processing for GPS L2C signal acquisition显示文摘 | T H Ta S U Qaisar A G Dempster | 2012 | IEEE Transactions on Aerospace and Electronic Systems2012，48，2： | 1 |
| 18 | Assessment of the GPS L2C code structure for efficient signal acquisition 显示文摘 | S U Qaisar A G Dempster | 2012 | IEEE Transactions on Aerospace and Electronic Systems2012，48，3： | 1 |
| 19 | Characteristics of nitrogenous substrate conversion by anammox enrichment显示文摘 | Anhui Hu Ping Zheng Qaisar Mahmood Lei Zhang Lidong Shen Shuang Ding | 2010 | Bioresource Technology2010，，2： | 1 |
| 20 | Serum influ- ences the expression of Pseudomonas aemginosa quorum-sensing genes and QS-controlled virulence genes during early and late stages of growth 显示文摘 | Kruczek C Qaisar U Colmer-Hamood JA | 2014 | Microbiologyopen2014，3，1： | 1 |
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