journal
https://read.qxmd.com/read/29989753/start-up-of-a-bench-scale-uasb-reactor-treating-real-substitute-natural-gas-wastewater-with-glucose-addition
#21
JOURNAL ARTICLE
Jun Li, Tao Xiang, Dongning Chen
Investigation on a up-flow anaerobic sludge blanket (UASB) treating real substitute natural gas wastewater (SNGW) with glucose addition was conducted. The UASB was analyzed and addition of glucose remained as co-substrate during the whole start-up period. Excellent treatment performance was achieved when SNGW was treated with 500-mg 1(-1) glucose. The anaerobic reactor was operated continuously at 35°C for 125 days. After increasing the organic loading rate, fluctuations in removal efficiencies were observed, which were partly reversible...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989752/evaluation-of-carbon-reduction-through-integration-of-vertical-and-horizontal-landscape-design-for-hotel-premises
#22
JOURNAL ARTICLE
Rashidi Othman, Siti Zubaidah Abu Kasim, Khairusy Syakirin Has-Yun Hashim, Zainul Mukrim Baharuddin
Hotel premises is a fundamental component of the tourism and hospitality. The design, construction, operation and end-of-life-cycle processes of hotel premises built the environment by which it exerts both positive and negative impacts on the guest and surrounding environment. Carbon emission from hotel premises are one of the major sources for greenhouse effect in urban areas. To counteract these tendencies, it is therefore necessary to identify green building practices that can be implemented over the hotel building's carbon emission in order to reduce its environmental impact as minimize the operational cost while maximizing economic and social opportunities...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989751/analysis-of-heavy-metals-as-a-key-indicator-to-predict-shallow-slope-failure
#23
JOURNAL ARTICLE
Rashidi Othman, Shah Irani Hasni, Zainul Mukrim Baharuddin
Degradation or decline of soil quality that cause shallow slope failure may occur due to physical or chemical processes. It can be triggered off by natural phenomena, or induced by human activity through misuse of land resources, excessive development and urbanization leading to deforestation and erosion of covered soil masses causing serious threat to slopes. The extent of damage of the slopes can be minimized if a long-term early warning system is predicted in the landslide prone areas. The aim of the study was to characterize chemical properties of stable and unstable slope along selected highways of Malaysia which can be manipulated as indicator to forecast shallow slope failure...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989750/study-on-temporary-resolution-for-offshore-marine-oil-spill-emergencies-based-on-remote-sensing-system
#24
JOURNAL ARTICLE
Guo-Xin Lan, Kai-Xin Dong, Jun-Jie Lin
Time is particularly critical for an oil spill occurring in the ocean as wind and current can rapidly spread the oil over a large area in a short time. Using the features of sensor surveillance system and mathematical trajectory models, the cooperation of surveillance and trajectory under oil spill emergency response is presented in this paper. Based on integration of equation simulating an oil spill trajectory, the method for remote-sensing application time (Te) has been described, and optimization of processing time described in the application time equation has been proposed...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989749/determining-efficient-delivery-routes-in-specific-time-frames-using-geographic-information-system
#25
JOURNAL ARTICLE
Mohammad Abousaeidi, Rosmadi Fauzi, Rusnah Muhamad
Perishable products must be transported quickly from its production area to the markets due to the climatic conditions of Malaysia. Deterioration of fresh produce is affected by temperature and delivery time. The cost to achieve such timely delivery of perishable food can affect the revenue of suppliers and retailers. Choosing an efficient delivery route at right time can reduce the total transportation cost. However, insufficient attention has been given to transportation issues with regards to fresh food delivery of greater Kuala Lumpur...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989748/robust-reverse-logistics-network-design-for-the-waste-of-electrical-and-electronic-equipment-weee-under-recovery-uncertainty
#26
JOURNAL ARTICLE
Sun Qiang, Xing-Zhong Zhou
The recovery of waste electrical and electronic equipment (WEEE) has become a major issue for solid waste management. Exploring new ways to dispose of WEEE has become mandatory in most of the countries in the world. Reverse logistics which is the backward flows of used product from consumers to producers is an important stage dealing with the WEEE. The reverse logistics network design for WEEE plays an important role in the total cost of recovery system. With this study, taking into account the uncertainty of reverse logistics network operation for WEEE, a robust mixed integer linear programming model for WEEE reverse logistics network was established for handling problem, which was affected by the uncertainty of recovery based on the risk preference coefficient and penalty coefficient deviated from the constraints, that could allow decision-makers to adjust the robust level of the operation system and risk preferences...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989747/impact-of-treated-wastewater-on-soil-hydraulic-properties-and-vegetable-crop-under-irrigation-with-treated-wastewater-field-study-and-statistical-analysis
#27
JOURNAL ARTICLE
Khaled S Balkhair
Due to aridity, scarcity and unsustainably of natural water resources many developing countries tend to utilize wastewater for crop production. The use of treated wastewater in irrigation has many advantages and disadvantages to soil, crop and environment. The objective of the study was to investigate the effect of irrigation with wastewater on soil physical and hydraulic properties of soil, as well as the effect on yield, yield components and irrigation water use efficiency (IWUE) of vegetable crop grown under surface and subsurface drip irrigation systems...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989746/generalized-population-dynamic-operator-with-delay-based-on-fractional-calculus
#28
JOURNAL ARTICLE
Rabha W Ibrahim, M Z Ahmad, M Jasim Mohammed
In population dynamics, a growing population consumes more food than a matured one that depends upon condition of individual species. This hints to neutral equations. In the present study, certain sufficient conditions for the existence of periodic solutions to a generalized Rayleigh-type equation with state dependent delay, based on fractional calculus concept was investigated.
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989745/a-new-mathematical-model-of-the-dynamic-of-psychotherapy
#29
JOURNAL ARTICLE
Rabha W Ibrahim, M Z Ahmad, M Jasim Mohammed
The aim of the present study is to construct a mathematical model skilled in creating hard estimates about the dynamic of psychotherapy with a purpose of using it for better sequence therapists. The outcome of the calculations envisages a new viewpoint on the therapeutic relationship and a number of suitable visions. The proposed model is based on a class of fractional differential equations. This type of class was a generalized neutral differential equation of first order. Certain sufficient conditions for the existence of periodic outcomes have been imposed...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989744/geographical-distribution-of-persistent-organic-pollutants-in-the-environment-a-review
#30
JOURNAL ARTICLE
Samavia Batool, Sharifah Ab Rashid, Mohd Jamil Moah, Maliha Sarfraz, Muhammad Aqeel Ashraf
The sources, distribution, transformation, toxicity and accumulation of persistent organic pollutants (POPs) in aquatic and terrestrial ecosystems have attracted global concern and attention over the last several decades. Although, POPs are toxic, degrade slowly and have a tendency to accumulate in the food chain, they are still widely used worldwide in many fields, such as industrial and agricultural activities. In addition, discharge of POPs into waterways may lead to serious health-related and environmental problems...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989743/effect-of-cod-so-4-2-ratio-and-alkalinity-on-cod-removal-and-sulfate-reduction-in-two-phase-expanded-granular-sludge-bed
#31
JOURNAL ARTICLE
Jun Li, Tao Xiang, Jie Wei, Dongning Chen, Aqeel Ashraf
In the present study, a bench-scale two-phase expanded granular sludge bed (EGSB) reactor was applied for treatment of high-sulfate wastewater. The reactor was operated continuously at 35°C. The EGSB 1, as sulfate-reducing phase, and EGSB2, as methane-producing phase, were combined after successful start-up. The treatment characteristics, including the effect of influent COD/SO(4)(2-) ratio and alkalinity in reactor have been discussed for EGSB1 and EGSB2 respectively. When total COD removal was 85%, the influent COD/S0(4)(2-) ratio was 2...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989742/hydrodynamic-analysis-of-rigid-and-flexible-pectoral-fins
#32
JOURNAL ARTICLE
Ningyu Li, Yumin Su, Zhaoli Wang, Weixing Liu, Muhammad Aqeel Ashraf, Zhiyang Zhang
Numerical study on unsteady hydrodynamic characteristics of rigid and flexible pectoral fins in viscous flow-field was performed in the present study. The effect of key kinematical parameters on the propulsion performance was analyzed. The propulsion mechanism was explored by evolution of wake vortices. Computational results revealed that optimal combination for investigated parameters was U = 4C, Φ(FLA) = 45°, ΔΦ(FL) = 60° and α(0) = 0.2. Wake vortices were shed from two edges of fin and fin tip and convect downstream as well as laterally...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989741/bera-lake-water-quality-past-and-present-situation
#33
JOURNAL ARTICLE
Mohammadreza Gharibrezal, Muhammed Aqeel Ashraf
Bera Lake is the largest natural fresh water reservoir in Malaysia. It has vital environmental and ecological importance for human and wild life. Nevertheless, water quality of this lake has been degraded during the last few decades due to land development projects at catchment area. Therefore, a comprehensive water quality assessment of Bera Lake was implemented in order to compare current water quality with the implementation of land development projects. In situ water quality surveying was implemented using calibrated full option Hydrolab DS 5...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989740/sorption-of-tetracycline-oxytetracycline-and-tylosin-to-eight-surface-sediments-of-taihu-lake
#34
JOURNAL ARTICLE
Liangliang Ji, Zhaotun Bai, Liping Deng, Muhammad Aqeel Ashraf
The objective of the present study is to investigate the mechanism of tetracyclines and macrolieds absorption on Taihu Lake sediments. In the study, batch technique was used to study the adsorptive behavior of three pharmaceutical antibiotics (tetracycline, oxytetracycline and tylosin) from several sediments of Taihu Lake, Zhushan Bay, Western Lakeshore, Lake Center, Southern Lakeshore, East Tai Lake, Eastern Lakeshore, Gonghu Bay and Meiliang Bay. The eight sediments showed extraordinarily high absorption affinity for all the tested antibiotics...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989739/study-on-ch-4-and-n-2-o-emissions-from-water-saving-irrigation-in-phaeozem-paddy-fields-in-cold-areas
#35
JOURNAL ARTICLE
F Q Wang, W Guo, S J Zhu, X L Gong
Increasing greenhouse gas emissions and water shortage are two main problems associated with cultivation of rice. Soil moisture control is not only a core technology in water-saving irrigation, but also a decisive factor of greenhouse gas emissions. The CH(4) and N(2)0 emission fluxes from intermittent irrigation and flooding irrigation in Phaeozem paddy fields in cold area were measured in-situ to provide a theoretical basis for studying the regulation of CH(4) and N(2)O emissions and comprehensive assessing the effect of intermittent irrigation on the environment and control of greenhouse gas emissions...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989738/seasonal-characteristics-of-chlorophyll-a-and-its-relationship-with-environmental-factors-in-yunmeng-lake-of-china
#36
JOURNAL ARTICLE
Dai Wei, Gao Yuan, Feng Simon
Sampling was carried out according to the season, in order to analyze the seasonal characteristics of chlorophyll-a and its relationship with environmental factors in Yunmeng Lake on 1st May, 12th August, 1st October and 14th December of 2013. The results showed that the average annual water temperature, pH, TP, TN and chlorophyll-a concentration in Yunmeng Lake was 15.9°C, 7.12, 0.07 mg l(-1), 1.58 mg l(-1) C and 30.60 μg 1(1) respectively. The water quality was Class IV water or eutrophic type. Water chlorophyll-a was significantly positive with pH and TP(R(2)=0...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989737/in-vitro-polysaccharide-extraction-from-cipangopaludina-cathayensis-and-its-pharmacological-potential
#37
JOURNAL ARTICLE
Chenwei Wang, Jiantao Liu, Yichi Huang, Xiaohui Zhang
Cipangopaludina cathayensis (mudsnails) is a snail-like animal. This study intends to reveal pharmacological potential of polysaccharide extracted from mudsnails. Crude soluble polysaccharide of mudsnails was extracted using hot water extraction and ethanol precipitation method. The crude polysaccharide was purified successively using Sevag method. Applying Fenton reactions, it was found that antioxidant potential efficiency of polysaccharide extracted from mudsnail was dose-dependent and reached up to 44.29% at 4 mg ml(-1) concentration...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989736/rapid-propidium-monoazide-cpcr-assay-for-exclusive-quantification-of-viable-salmonella-spp-cells
#38
JOURNAL ARTICLE
N M Sunar, D I Stewart, L A Fletcher, E I Stentiford, Muhammad Aqeel Ashraf
Combination of pretreatment with propidium monoazide by competitive polymerase chain reaction (cPCR) was evaluated to enumerate the viability of Salmonella spp. The results showed that PMA treatment was effective in preventing the cPCR detection of target sequences from non- viable cells. In less than 5 hrs, this method generated a signal from viable but nonculturable (VBNC) Salmonella spp. The standard culture method gave approximately 1-2 log(10)cfu ml(-1) less as compared to the PMA-cPCR results. These results provided evidence to support the VBNC state, whereas, the viable cells failed to be cultured by SCM...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989735/extrication-process-of-chlorogenic-acid-in-crofton-weed-and-antibacterial-mechanism-of-chlorogenic-acid-on-escherichia-coli
#39
JOURNAL ARTICLE
Y Zheng, J Liu, M L Cao, J M Deng, J Kou
Crofton weed is a perennial herb and a biological intruding species. The present study firstly used the orthogonal test to compare the differences in extraction of chlorogenic acid in leaves and stems of Crofton weed by using three kinds of solvents, namely water, ethanol and ethyl acetate. The best effect was found by using ethonolic extraction of chlorogenic acid in Crofton weed. Further, by choosing Escherichia coli as test object, in-vitro antibacterial test was conducted to study the antimicrobial activities of chlorogenic acid by testing a series of indexes before and after the interaction between chlorogenic acid and Escherichia coli, to clarify the antibacterial mechanism of chlorogenic acid on Escherichia coli...
September 2016: Journal of Environmental Biology
https://read.qxmd.com/read/29989734/construction-of-a-genetic-linkage-map-and-identification-of-qtl-associated-with-growth-traits-in-malus-sieversii
#40
JOURNAL ARTICLE
Z C Liu, D E Bao, D L Liu, X S Chen
110 F(1) individuals of apple were obtained by crossing between a good quality cultivar'Red Fuji'ofMalus domestica and an accession'Hongrou Apple'ofMalus sieversi. Using Joinmap3.0, a molecular genetic linkage map of Malus sieversii was constructed by 175 SSR and 105 SRAP markers which were integrated into 17 linkage groups and spanned 1299.67cM in genome with an average distance of 4.6cM between the markers. By using interval mapping method,17 QTLs for eight growth traits of Malus sieversii were detected, including 2 QTLs for tree height on cl and c16, 2 QTLs for stem height on c7, 2 QTLs for stem thickness on c3, 2 QTLs for new shoot length on c15 and c16, 2 QTLs for new shoot diameter on c2, 3 QTLs for internode number on c1, c2 and c2, 2 QTLs for internode length on c 1 and c2, 2 QTLs for lenticel density on c17, respectively...
September 2016: Journal of Environmental Biology
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