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Impact of surface roughness on the coefficient of friction of polymer-on-polymer contacts for deflection pulley-rope systems in the lift industry

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friction 2024年第9期12卷 2126-2138页

作者： Ainhoa GUINEA Andrea AGINAGALDE wilson TATO Iñigo LLAVORI Pablo GARCIA Leire ARRAIAGO Alaitz ZABALA mechanical and Industrial Production Department Mondragon UnibertsitateaMondragon 20500Spain Orona EIC Orona IdeoHernani 20120Spain

The coefficient of friction(Cof)between the deflection pulley and rope in a lift strongly affects the life span of the *** surface roughness is a key factor affecting the metallic pulley–rope Cof,its effect on polymeric pulleys is *** present study analyses the effect of roughness and working conditions on cast polyamide 6(PA6G)deflection pulley–thermoplastic polyurethane(TPU)-coated rope *** statistical analysis revealed that the effect of surface roughness on the Cof for low-load tests was *** present study contributes significantly to parameter selection in deflection pulley machining to minimise friction between the pulley and rope.

关键词： polymer-on-polymer friction roughness dry sliding

The effects of data aggregation on long-term projections of forest stands development

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forest Ecosystems 2024年第3期11卷 381-389页

作者： Kobra maleki Rasmus Astrup Nicolas Cattaneo wilson Lara Henao Clara Anton-fernandez Norwegian Institute of Bioeconomy Research Division of Forestry and Forest ResourcesP.O.Box 115ÅsNO-1431Norway

forest management planning often relies on Airborne Laser Scanning(ALS)-based forest management Inventories(fmIs)for sustainable and efficient *** the area-based(ABA)approach,these inventories estimate forest characteristics for grid cell areas(pixels),which are then usually summarized at the stand *** the ALS-based high-resolution Norwegian forest Resource maps(16 m×16 m pixel resolution)alongside with stand-level growth and yield models,this study explores the impact of three levels of pixel aggregation(standlevel,stand-level with species strata,and pixel-level)on projected stand *** results indicate significant differences in the projected outputs based on the aggregation ***,the most substantial difference in estimated volume occurred between stand-level and pixel-level aggregation,ranging from-301 to+253 m^(3)·ha^(-1)for single *** differences were,on average,higher for broadleaves than for spruce and pine dominated stands,and for mixed stands and stands with higher variability than for pure and homogenous *** conclusion,this research underscores the critical role of input data resolution in forest planning and management,emphasizing the need for improved data collection practices to ensure sustainable forest management.

关键词： Growth and yield models Dominant species Norway spruce Scots pine Broadleaves forest resource map Stand variability

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fish culture in biofloc technology(BfT):Insights on stocking density carbon sources,C/N ratio,fish nutrition and health

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Aquaculture and fisheries 2024年第4期9卷 522-533页

作者： Luciana Kelly Oliveira wilson Wasielesky Jr marcelo Borges Tesser Laboratorio de Nutriçao de Organismos Aqu´aticos Instituto de OceanografiaUniversidade Federal do Rio Grande-FURG-Rua do Hotel02-CassinoRio Grande96201-900Brazil Laborat´orio de Carcinocultura Instituto de OceanografiaUniversidade Federal do Rio Grande-FURG-Rua do Hotel02-CassinoRio Grande96201-900Brazil

The growth of aquaculture demands intense consumption of formulated foods,scarce natural resources such as water and *** increase in aquaculture production needs to be sustainable in several aspects of the activity,including the use of.more sustainable farming systems that provide reduced water demand,less space dependence for increased production,and availability of complementary natural *** this perspective,the biofloc system(BfT),presents itself as a more friendly cultivation technology as a way to mitigate some impacts of aquaculture *** research has been carried out,addressing different aspects important to the production of fish in *** this review,we address how stocking density,carbon sources and carbon nitrogen ration(C/N)affect animal performance and the nutritional value of bioflocs;the use of.microbial aggregates as“in situ”and“ex situ”food and the benefits in feed conversion,and their influence on the immune system and disease resistance.

关键词： Biofloc technology Aquaculture system Natural food Nutritional value fish health

Optimization of gas lift system for well performance improvement in Asmari formation:A techno-economic perspective

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Petroleum Research 2024年第1期9卷 115-124页

作者： Hari Sreenivasan Jash Patel Dev Jain Setu Patel Isaac wilson Shanker Krishna Drilling Cementing&Stimulation(DCS)Research CentreDepartment of Petroleum EngineeringSchool of Energy Technology(SoET)Pandit Deendayal Energy University(PDEU)Knowledge CorridorRaysanGandhinagarGujarat382426India

Well productivity in the Asmari carbonate formation of southwest Iran has decreased in recent years as a result of production *** production rate must be maintained below 1500 STB/day to prevent water *** this study,a gas lift well is modeled using data from one of the producing wells of this *** analysis is performed using lift-gas injection rates and wellhead pressures at different reservoir pressures and water cut conditions to optimize *** aspects are considered to optimize the artificial gas injection rates at different tubing head pressures and water cut *** the lift-gas injection rate from 0.4 mmscf/day to 1 mmscf/day enhances the oil production rate by 37.71%and 43.89%for 10%and 30%water cut conditions,*** injection rates of 5.2 mmscf/day and 5.4 mmscf/day are determined to be economically optimal for 30%water cut with tubing head pressures of 260 psig and 270 psig,respectively.

关键词： Production enhancement Artificial lift Gas lift Asmari carbonate formation Techno-economic analysis Well productivity

Rodent management in Aotearoa New Zealand: approaches and challenges to landscape-scale control

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Integrative Zoology 2024年第1期19卷 8-26页

作者： John G.INNES Grant NORBURY Araceli SAmANIEGO Susan WALKER Deborah J.wilson manaaki Whenua-Landcare Research HamiltonNew Zealand manaaki Whenua-Landcare Research AlexandraNew Zealand manaaki Whenua-Landcare Research AucklandNew Zealand manaaki Whenua-Landcare Research DunedinNew Zealand

Aotearoa—New Zealand has only four rodent species,all *** order of arrival,they are Pacific rat Rattus exulans,brown rat ***,house mouse mus musculus,and black rat *** management in New Zealand aims mainly to conserve indigenous biodiversity rather than to protect crops or manage diseases,as is usual *** describe four major“regimes”and one major vision for rodent control in New Zealand to meet ecological restoration *** challenges for island eradications are for large islands that are remote or populated by *** 1080 is the only large-scale(tens of thousands of hectares)option for black rat control,but its application requires adjustment to counter subsequent rapid black rat ***“ecosanctuaries”(mean 720 ha)use ground-based traps and poisons to target mainly black rats and face constant *** with mammal-resistant fences(up to 3500 ha)limit reinvasion and target more pest species and have enabled the return of previously extirpated taxa to the main *** free 2050 aims to eradicate the rat species(but not mice)plus some other introduced mammals from New Zealand by *** vision is not attainable with current tools,but research and experimental management is exploring techniques and *** large scale(to 100000 ha)at which black rats are now targeted for control to extremely low abundance seems to be unique to New Zealand.

关键词： black rat brown rat eradication house mouse rodent control

mRNA vaccines:a new era in vaccine development

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Oncology Research 2024年第10期32卷 1543-1564页

作者： SHUBHRA CHANDRA JENNIfER C.wilson DAVID GOOD mING Q.WEI School of Pharmacy&medical Sciences Gold Coast campusGriffith UniversityBrisbaneQLD-4222Australia menzies Health Institute Queensland(mHIQ) Gold Coast CampusGriffith UniversityBrisbaneQLD-4215Australia School of Allied Health Australian Catholic UniversityBrisbaneQLD-4014Australia

The advent of RNA therapy,particularly through the development of.mRNA cancer vaccines,has ushered in a new era in the field of *** article provides a concise overview of the key principles,recent advancements,and potential implications of.mRNA cancer vaccines as a groundbreaking modality in cancer *** cancer vaccines represent a revolutionary approach to combatting cancer by leveraging the body’s innate immune *** vaccines are designed to deliver specific mRNA sequences encoding cancer-associated antigens,prompting the immune system to recognize and mount a targeted response against malignant *** personalized and adaptive nature of.mRNA vaccines holds immense potential for addressing the heterogeneity of cancer and tailoring treatments to individual *** breakthroughs in the development of.mRNA vaccines,exemplified by the success of COVID-19 vaccines,have accelerated their application in *** mRNA platform’s versatility allows for the rapid adaptation of vaccine candidates to various cancer types,presenting an agile and promising avenue for therapeutic *** trials of.mRNA cancer vaccines have demonstrated encouraging results in terms of safety,immunogenicity,and *** candidates,such as BioNTech’s BNT111 and moderna’s mRNA-4157,have exhibited promising outcomes in targeting melanoma and solid tumors,*** successes underscore the potential of.mRNA vaccines to elicit robust and durable anti-cancer immune *** the field holds great promise,challenges such as manufacturing complexities and cost considerations need to be addressed for widespread *** development of scalable and cost-effective manufacturing processes,along with ongoing clinical research,will be pivotal in realizing the full potential of.mRNA cancer ***,mRNA cancer vaccines represent a cutting-edge therapeutic approach that holds the promise of transforming cancer treatment.

关键词： Cancer immunotherapy Immune checkpoint Preventive&therapeutic vaccine Delivery system mRNA

Artificial light at night(ALAN) pollution alters bat lunar chronobiology:insights from broad-scale long-term acoustic monitoring

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Ecological Processes 2024年第1期13卷 176-187页

作者： Han Li Pauline Allen Saige Boris Samantha Lagrama Jade Lyons Christina mills Pauline moussi Casey Nichols Carter Tacosik mc Kenzie Tsaousis Nyzaya Livingston wilson John f.Grider Kevin A.Parker matina C.Kalcounis-Rueppell Department of Biology University of Nebraska Omaha Department of Biology University of North Carolina Greensboro Colorado Parks and Wild-life Parker Ecology LLC Department of Biological Sciences University of Alberta

Background The timing of behavior and habitat use of nocturnal animals can be influenced by the lunar cycle in nature. The prevalence of artificial light at night(ALAN) has been recognized as a source of environmental pol-lution. The interaction between ALAN and the lunar cycle on bat behavior is important for understanding anthro-pogenic effects on bats. We utilized a decade(2012–2022) of acoustic monitoring data collected in North Carolina, United States, to investigate the relationship between bat activity, lunar cycle, and light pollution. We examined whether the amount of lunar illumination affected species-specific nightly activity and whether hourly bat activity patterns varied between nights with different moon phases. We further investigated if the relationship between bat activity and the lunar cycle might be altered by light *** We found that seven bat species showed activity variation across nights in relation to the amount of.moon illumination when ALAN was absent. In general, bats were less active on full moon nights compared to new moon nights. Light pollution interacted with the bat–lunar relationship in five of the seven species, masking the effect of the lunar cycle. We identified delayed bat activity patterns on nights with a full or waxing moon in seven species, and light pollution altered that pattern in four species. Overall, ALAN was associated with decreased bat activity inde-pendent of lunar cycle *** Our study demonstrated that at a broad spatial scale, ALAN negatively affected many North American temperate bat species and altered their lunar chronobiology. As light pollution is spreading to historically dark areas and habitats, ALAN might couple with other threats, such as the white-nose syndrome or climate change, to cause cascading damage in the environment that depends on ecosystem services such as pest control provided by bats. We argue that further research and conservation actions are needed to mitigate

关键词： Artificial light at night ALAN Bats Chiroptera Chronobiology Light pollution Lunar cycle moonlight

Why can some countries perform better in resolving some social problems:A comparative study

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Economic and Political Studies 2024年第3期12卷 250-266页

作者： wilson X.B.Li Tina T.He faculty of Business and management BNU-HKBU United International CollegeZhuhaiChina

This study explores the rationale why some countries fare better in resolving social problems such as poverty and the COVID-19 *** simple model introduces the term of resident viability and points out that the solution to a social problem with a large ratio of nonviable to viable residents requires the mobilisation of.more societal resources,and the affordable price ratio of societal to individual resources is determined by country characteristics such as the cultural background,political regime,ideology towards the free-market mechanism,government efficiency and social *** study also makes between-country comparisons and conducts preliminary regression analyses with cross-country data,and all the results are consistent with the model predictions on the relationship between country characteristics and country performances in fighting poverty and handling the COVID-19 pandemic.

关键词： Social problems COVID-19 poverty eradication viability between-country comparison

A four-band index for both liquid and solid water and its applications in the Aral Sea Basin

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Science China Earth Sciences 2024年第3期67卷 769-788页

作者： Bing YUE Xi CHEN Saibo LI Zhengping DU John wilson Junhui YANG Yimen JIAO Shuangyan HUANG Chenghu ZHOU Xinjiang Institute of Ecology and Geography Chinese Academy of SciencesUrumqi 830011China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China Institute of Geographical Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China Spatial Sciences Institute University of Southern CaliforniaLos AngelesCA 90089-0374USA

Various investigations have been conducted to analyze the water-coverage area of the Aral Sea and the Aral Sea Basin(ASB). However, the investigations incorporated considerable uncertainty and the used water indices had misclassification problem, which made different research groups present different results. Thus we first ascertain the boundaries of the ASB, the Syr and Amu river basins as well as their upper, middle and lower reaches. Then a four-band index for both liquid and solid water(ILSW) is proposed to address the misclassification problems of the classic water indices. ILSW is calculated by using the reflectance values of the green, red, near infrared, and thermal infrared bands, which combines the normalized difference water index(NDWI) and land surface temperature(LST) together. Validation results show that the ILSW water index has the highest accuracy by far in the Aral Sea Basin. Our results indicate that annual average decline of the water-coverage area was 963 km^(2) in the southern Aral Sea, whereas the northern Aral Sea has experienced little change. In the meanwhile, permanent ice and snow in upper reach of ASB has retreated considerably. Annual retreating rates of the permanent ice and snow were respectively 6233and 3841 km^(2) in upper reaches of Amu river basin(UARB) and Syr river basin(USRB). One of.major reasons is that climate has become warmer in ASB. The climate change has caused serious water deficit problem. The water deficit had an increasing trend since the 1990s and its increasing rates was 3.778 billion m^(3) yearly on average. The total water deficit was 76.967 billion m^(3) on average in the whole area of ASB in the 2010s. However, up reaches of Syr river basin(USRB), a component area of ASB, had water surplus of 25.461 billion m^(3). These conclusions are useful for setting out a sustainable development strategy in ASB.

关键词： Aral Sea Basin Syr river basin Amu river basin Water indices Water-coverage area Water deficit Climate change

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