检索结果-南通市图书馆

Journal of Environmental Protection 2019年第6期10卷 745-771页

作者： David A. Meints Kristofor R. Brye Larry t. west Lisa S. Wood Department of Crop Soil and Environmental Sciences University of Arkansas Fayetteville AR USA

Onsite wastewater systems dispose of primary treated effluent by utilizing the soil for final recycling and renovation of wastewater into the environment. Soil and site limitations have become a challenge to design a wastewater system and dispose of onsite wastewater using a conventional pipe and gravel design. Using secondary-treated effluent from an advanced treatment unit applied to a reduced disposal area offers an additional alternative when developing an onsite wastewater system. the objective of this study was to determine the feasibility of hydraulically loading limiting soils with secondary-treated effluent in a reduced disposal area. A reduced disposal area was constructed at six existing residences within the same subdivision that had shallow redoximorphic features that precluded using a conventional pipe and gravel wastewater design. Each residence had an existing advanced treatment unit with a surface discharge of secondary-treated effluent. Flows were diverted from the surface discharge to the reduced disposal area. Wastewater flows were recorded at regular intervals, along with ponding depths in the disposal area and fluctuations in the seasonal water table over a 12-month period (March 2017 to March 2018). the disposal areas were hydraulically loaded at 2 to 3.8 times the rate recommended for secondary-treated effluent. Wastewater effluent was sampled throughout the study and resulted in a mean of -1 total suspended solids, -1 biochemical oxygen demand, and >6.3 mg·L-1 dissolved oxygen, all of which met or exceeded the minimum water quality criteria for surface discharges of secondary-treated effluent. three of the six sites showed ponding depths between 0 and 4 cm in the trenches during the study period. the remaining three sites showed ponding between 0 and 35 cm in the trenches during the study period. Based on the results of this study, a reduced disposal area utilizing secondary-treated effluent appears to be a feasible option to surface dischar

关键词： On-Site Wastewater Disposal Septic System Effluent Soil Renovation

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

磁控溅射用于细微颗粒涂镀功能薄膜的新技术

辽宁科技大学学报 2017年第2期40卷 126-132页

作者： Peter J Kelly David Sawtell Glen t west May Azzawi Asima Farooq Marina Ratova 英国曼彻斯特城市大学科学与工程学院英国曼彻斯特M15GD

磁控溅射是一项成熟的技术,可用在各种基体上沉积高质量金属及陶瓷涂层。然而,此项技术一般并不适于涂镀微粒粒度为nm或μm到100μm的细微粒涂层。本文详述了一种可涂镀微粒粒径在上述范围的均匀功能薄膜的技术。在磁场下面安放的一个... 详细信息

磁控溅射是一项成熟的技术,可用在各种基体上沉积高质量金属及陶瓷涂层。然而,此项技术一般并不适于涂镀微粒粒度为nm或μm到100μm的细微粒涂层。本文详述了一种可涂镀微粒粒径在上述范围的均匀功能薄膜的技术。在磁场下面安放的一个碗状容器内放有微粒子,容器可以振动可使粒子均匀地振出碗边沉落到真空腔,薄膜沉积工艺为反应或非反应脉冲磁控溅射。ti,ti O2,Sn及Sn O2从单磁场源沉积,而Bi/W的氧化物从双磁场源沉积。用SEM,tEM和EDX,以及其它与应用相关的技术表征所沉积的微粒,以表明此项技术的潜在功能。

关键词：功能薄膜磁控溅射粒子沉积振动

LFA-1 antagonist (BIRt377) similarly reverses peripheral neuropathic pain in male and female mice with underlying sex divergent peripheral immune proinflammatory phenotypes

在线全文

学校读者我要写书评

暂无评论

Neuroimmunology and Neuroinflammation 2019年第7期6卷 12-43页

作者： Shahani Noor Melody S.Sun Arden G.Vanderwall Mara A.Havard Jacob E.Sanchez Nathan W.Harris Monique V.Nysus Jeffrey P.Norenberg Harrison t.west Carsten R.Wagner Lauren L.Jantzie Nikolaos Mellios Erin D.Milligan Department of Neurosciences School of MedicineUniversity of New MexicoAlbuquerqueNM 87131USA Department of Anesthesiology and Critical Care University of New MexicoAlbuquerqueNM 87131USA Department of Pediatrics and Neurology Johns Hopkins University School of MedicineBaltimoreMD 21205-2196USA Department of Radiopharmaceutical Sciences College of PharmacyNew Mexico Center for Isotopes in MedicineUniversity of New MexicoAlbuquerqueNM 87131USA Department of Medicinal Chemistry University of MinnesotaCollege of PharmacyMinneapolisMN 55455USA

Aim:the majority of preclinical studies investigating aberrant glial-neuroimmune actions underlying neuropathic pain have focused on male rodent ***,studies have shown peripheral immune cells play a more prominent role than glial cells in mediating pathological pain in ***,we compared the onset and duration of allodynia in males and females,and the anti-allodynic action of a potentially novel therapeutic drug(BIRt377)that not only antagonizes the action of lymphocyte function-associated antigen-1(LFA-1)to reduce cell migration in the periphery,but may also directly alter the cellular inflammatory ***:Male and female mice were subjected to peripheral nerve injury chronic constriction injury(CCI)applying two methods,using either 4-0 or 5-0 chromic gut suture material,to examine potential sex differences in the onset,magnitude and duration of *** sensitivity before and after CCI and application of intravenous BIRt377 was *** and spinal tissues were analyzed for protein(multiplex electrochemiluminescence technology)and mRNA expression(quantitative real-time PCR).the phenotype of peripheral t cells was determined using flow ***:Sex differences in proinflammatory CCL2 and IL-1βand the anti-inflammatory IL-10 were observed from a set of cytokines analyzed.A profound proinflammatory t cell(th17)response in the periphery and spinal cord was also observed in neuropathic ***377 reversed pain,reduced IL-1βand tNF,and increased IL-10 and transforming growth factor(tGF)-β1,also an anti-inflammatory cytokine,in both ***,female-derived t cell cytokines are transcriptionally regulated by BIRt377,as demonstrated by reducing proinflammatory IL-17A production with concurrent increases in IL-10,tGF-β1 and the anti-inflammatory regulatory t cell-related factor,***:this study supports that divergent peripheral immune and neuroimmune responses during neuropathy exists between males and

关键词： Neuropathic pain glia neuroimmune peripheral immune t cells

Effects of site productivity on individual tree maximum basal area growth rates of Eucalyptus pilularis in subtropical Australia

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Forestry Research 2023年第6期34卷 1659-1668页

作者： P.W.west Forest Research Centre Southern Cross UniversityLismoreNSW 2480Australia

Inventory data were available from 96 plots of even-aged,monoculture,tall-open forests of Eucalyptus pilularis Smith,aged 2-63 years,growing in sub-tropical regions along the east coast of Australia.A model was developed relating the maximum possible stem basal area growth rate of individual trees to their stem basal *** any tree size,this maximum increased as site productivity ***,the size at which this maximum occurred decreased as productivity *** research has shown that,at any stand age,trees of a particular stem basal area are taller on more productive sites than on less productive *** trees incur greater respiratory costs to ensure maintenance of the photo synthetic capacity of their canopies;this reduces their growth *** was concluded that trees with larger basal areas will have the maximum possible growth rate on a less productive site,whilst trees with smaller basal areas will have the maximum possible on a more productive *** model developed may constitute the first stage of a complete individual tree growth model system to predict wood yields from these forests.

关键词： Growth model Individual tree Maximum growth rate Eucalyptus pilularis Physiological eff ects

Do increasing respiratory costs explain the decline with age of forest growth rate?

在线全文

学校读者我要写书评

暂无评论

Journal of Forestry Research 2020年第3期31卷 693-712页

作者： P.W.west Forest research centre southern cross universitylismorensw 2480australia

Once forests have achieved a full canopy, their growth rate declines progressively with age. this work used a global data set with estimates from a wide range of forest types, aged 20-795 years, of their annual photosynthetic production(gross primary production, GPP) and subsequent above-plus below-ground biomass production(net primary production, NPP). Both GPP and NPP increased with increasing mean annual temperature and precipitation. GPP was then unrelated to forest age whilst NPP declined progressively with increasing age. these results implied that autotrophic respiration increases with age. It has been proposed that GPP should decline in response to increasing water stress in leaves as water is raised to greater heights as trees grow taller with age. However, trees may make substantial plastic adjustment in mor phology and anatomy of newly developing leaves, xylem and fi ne roots to compensate for this stress and maintain GPP with age. this work reviews the possibilities that NPP declines with age as respiratory costsincrease progressively in, any or all of, the construction and maintenance of more complex tissues, the maintenance of increasing amounts of live tissue within the sapwood of stems and coarse roots, the conversion of sapwood to hear twood, the increasing distance of phloem transport, increased turnover rates of fine roots, cost of supporting very tall trees that are unable to compensate fully for increased water stress in their canopies or maintaining alive competitively unsuccessful small trees.

关键词： Primary production Photosynthesis Respiration Biomass growth Ageing

transport mechanism in chemically reactive hybrid nanofluid flow containing gyrotactic micro-organisms over a curved oscillatory surface

在线全文

学校读者我要写书评

暂无评论

Applied Mathematics and Mechanics(English Edition) 2025年第1期46卷 177-192页

作者： M.NAVEED M.IMRAN t.ASGHAR Z.ABBAS Department of Mathematics Division of Science and TechnologyUniversity of Education Department of Mathematics The Islamia University of Bahawalpur

this paper examines the transport analysis, including both heat transfer and mass transfer, in hybrid nanofluid flow containing gyrotactic microorganisms towards a curved oscillatory surface. the influence of magnetic fields is also inspected in terms of their physical characteristics. to depict the phenomena of transport, modified versions of both Fick's and Fourier's laws are used. Additionally, the characteristics of both heterogeneous and homogeneous chemical reactions are also incorporated. Utilizing a curvilinear coordinate system, the flow problem is formulated as partial differential equations(PDEs)for momentum, concentration, microorganism field, and energy. An analytical solution to the obtained flow equations is achieved utilizing the homotopy analysis method(HAM).the effects of significant flow parameters on the pressure and microorganism fields, velocity, oscillation velocity, concentration, and temperature distributions are shown via graphs. Furthermore, the variations in skin friction, mass transfer rate, heat transfer rate, and local motile number due to different involved parameters are presented in tables and are analyzed in detail. Graphical results indicate that the curves of velocity and temperature fields are enhanced as the values of the solid volume fraction variables *** is also verified that the concentration rate field decreases as the values of the homogeneous reaction strength parameter and the radius of curvature parameter increase, and it increases with the Schmidt number and the heterogeneous reaction strength *** outcomes show a favorable response of the motile number to advanced values of the Peclet number, the Schmidt number, the microorganism difference parameter, and the bio-convective Lewis number.

关键词：

Problems with models assessing influences of tree size and inter-tree competitive processes on individual tree growth:a cautionary tale

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Journal of Forestry Research 2022年第2期33卷 565-577页

作者： P.W.west D.A.Ratkowsky Forest Research Centre Southern Cross UniversityLismoreNSWAustralia tasmanian Institute of Agriculture University of TasmaniaHobartTASAustralia

In forest growing at any one site, the growth rate of an individual tree is determined principally by its size, which reflects its metabolic capacity, and by competition from neighboring trees. Competitive effects of a tree may be proportional to its size;such competition is termed ‘sym-metric’ and generally involves competition below ground for nutrients and water from the soil. Competition may also be ‘asymmetric’, where its effects are disproportionate to the size of the tree;this generally involves competition above ground for sunlight, when larger trees shade smaller, but the reverse cannot occur. this work examines three model systems often seen as exemplars relating individual tree growth rates to tree size and both competitive processes. Data of tree stem basal area growth rates in plots of even- aged, monoculture forest of blackbutt (Eucalyptus pilularis Smith) growing in sub-tropical eastern Australia were used to test these systems. It was found that none could distin-guish between size and competitive effects at any time in any one stand and, thus, allow quantification of the contribution of each to explaining tree growth rates. they were prevented from doing so both by collinearity between the terms used to describe each of the effects and technical problems involved in the use of nonlinear least-squares regression to fit the models to any one data set. It is concluded that quite new approaches need to be devised if the effects on tree growth of tree size and competitive processes are to be quantified and modelled successfully.

关键词： Symmetric competition Asymmetric competition tree growth rate Growth modeling Nonlinear modeling

Fecal microbiota transplantation in allergic diseases

在线全文

学校读者我要写书评

暂无评论

World Journal of Methodology 2025年第2期15卷 83-91页

作者： Ece tüsüzÖnata ÖnerÖzdemir Division of Pediatric Allergy and Immunology Medical FacultySakarya UniversityAdapazarı54100SakaryaTürkiye

Microorganisms such as bacteria,fungi,viruses,parasites living in the human intestine constitute the human intestinal *** refers to composi-tional and quantitative changes that negatively affect healthy gut *** recent years,with the demonstration that many diseases are associated with dysbiosis,treatment strategies targeting the correction of dysbiosis in the treat-ment of these diseases have begun to be *** microbiota trans-plantation(FMt)is the process of transferring faeces from a healthy donor to another recipient in order to restore the gut microbiota and provide a therapeutic *** studies have gained popularity after probiotic,prebiotic,symbiotic studies in the treatment of dysbiosis and related *** has emerged as a potential new therapy in the treatment of allergic diseases as it is associated with the maintenance of intestinal microbiota and immunological balance(t helper 1/t helper 2 cells)and thus suppression of allergic *** this article,the definition,application,safety and use of FMt in allergic diseases will be discussed with current data.

关键词： Microbiota Dysbiosis Faecal microbiota transplantation Allergic diseases

SYNtHESIS AND CROSSLINKING OF LIQUID ORGANOSILANE POLYMERS

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 1986年第1期4卷 24-34页

作者：张兴华,Robert west Institute of Chemistry Academia Sinica Beijing Department of Chemistry University of Wisconsin Madison W1 53706 U.S.A.

Liquid organosilane polmers have been synthesized by sodium coupling of diorganodichloro-silanes with diphenylmethylchlorosilane in toluene. these polysilanes can be formed into desiredshape by potting, casting or coating and crosslinked under ultraviolet irradiation in the presenceof multifunctional vi?ylsilanes. the molecular weight distributions, infra-red, ultraviolet andnuclear magnetic resonance spectra for the organosilane polymers have been described.

关键词： Poly SYNtHESIS AND CROSSLINKING OF LIQUID ORGANOSILANE POLYMERS OC GPC