1,069 results match your criteria management surplus


Identifying the spatial disparities and determinants of ecosystem service balance and their implications on land use optimization.

Sci Total Environ 2021 Jun 24;793:148472. Epub 2021 Jun 24.

Guangdong Provincial Academy of Environmental Science, Guangzhou 510045, China. Electronic address:

Ecosystem services (ESs) are increasingly affected by human interventions, and the ES balance between supply and demand plays a vital role in guaranteeing the expected efficacy of ecosystem restoration projects. However, the spatial disparities of ES balance, along with its determinants and spillover effects, remain unclear, constraining effective ES management and landscape planning. The aim of this study was to fill these gaps by quantifying the ES balance in the restoring Loess Plateau using an expert-based ES matrix approach and by examining the spatial associations between ES balance and driving factors via an integrated regression approach. Read More

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Data inaccessibility at sub-county scale limits implementation of manuresheds.

J Environ Qual 2021 Jul 22. Epub 2021 Jul 22.

Department of Agronomy, University of Wisconsin - Madison, 1575 Linden Drive, Madison, WI, 53705.

The manureshed concept aims to rebalance surplus manure nutrients produced at animal feeding operations (sources) and the demands from nutrient-deficient croplands (sinks) to reduce negative environmental impacts and utilize nutrients more efficiently. Due to water quality implications, studies focused on this re-balancing have typically created domain boundaries that match a particular watershed. However, a majority of agricultural datasets that are used to inform these analyses - specifically, livestock populations - are only available at the county scale, which generally do not match watershed boundaries. Read More

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Dynamic Evolution and Spatial Convergence of the Virtual Cultivated Land Flow Intensity in China.

Int J Environ Res Public Health 2021 07 4;18(13). Epub 2021 Jul 4.

College of Land Management, Nanjing Agricultural University, Nanjing 210095, China.

Exploring the flow intensity of virtual cultivated land is the key to improving the ecological compensation and food security policy. This study aimed to analyze the dynamic evolution, spatial convergence, and its affecting factors of the virtual cultivated land flow intensity. The spatial convergence model was used in this study. Read More

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The Surplus Transplant Lung Allocation System in Italy: An Evaluation of the Allocation Process via Stochastic Modeling.

Int J Environ Res Public Health 2021 07 3;18(13). Epub 2021 Jul 3.

Unit of Biostatistics, Epidemiology and Public Health, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padova, Via Loredan 18, 35121 Padova, Italy.

Background: Lung transplantation is a specialized procedure used to treat chronic end-stage respiratory diseases. Due to the scarcity of lung donors, constructing fair and equitable lung transplant allocation methods is an issue that has been addressed with different strategies worldwide. This work aims to describe how Italy's "national protocol for the management of surplus organs in all transplant programs" functions through an online app to allocate lung transplants. Read More

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Working towards full eradication of lipid-driven cardiovascular risk?

Neth Heart J 2021 Jul 19. Epub 2021 Jul 19.

Department of Vascular Medicine, Amsterdam UMC, University of Amsterdam, Amsterdam, The Netherlands.

Lipid-driven cardiovascular disease (CVD) risk is caused by atherogenic apolipoprotein B (apoB) particles containing low-density lipoprotein cholesterol (LDL-C), triglycerides and lipoprotein(a) [Lp(a)] and resembles a large and modifiable proportion of the total CVD risk. While a surplus of novel lipid-lowering therapies has been developed in recent years, management of lipid-driven CVD risk in the Netherlands remains suboptimal. To lower LDL‑C levels, statins, ezetimibe and proprotein convertase subtilisin/kexin type 9 inhibiting antibodies are the current standard of therapy. Read More

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Nitrogen and phosphorus trajectories (1998-2030) under regional development strategy of mainland China.

Sci Total Environ 2021 Jun 26;794:148655. Epub 2021 Jun 26.

Agricultural Clean Watershed Group, Institute of Environment and Sustainable Development in Agriculture, CAAS, Beijing 100081, China.

A good understanding of the nutrient cycle under a regional development strategy is crucial for nutrient management decision-making. Quantitatively assessment of nutrient flow under the regional coordinated development strategy in mainland China can provide scientific reference for achieving global high-quality coordinated economic and agricultural development. In this study, the characteristics of nitrogen (N) and phosphorus (P) flows of agricultural systems in mainland China from 1998 to 2030 were quantified using nutrient flows in food chain environment and resource (NUFER) model. Read More

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Comparison of the effect of insulin glargine and regular insulin on perioperative glycemic control in patients with type 2 diabetes mellitus under insulin treatment during vitrectomy surgery under general anesthesia: A randomized clinical trial study.

Med J Islam Repub Iran 2021 6;35:31. Epub 2021 Mar 6.

Anesthesiology Department, Fatima Plastic And Reconstructive Surgery Hospital, Iran University of Medical Sciences, Tehran, Iran.

Perioperative glycemic control is an important factor in the clinical management of a patient with diabetes mellitus under surgery. Poorly controlled long-term hyperglycemia not only predisposes individuals to systemic complications of diabetes mellitus and cardiovascular morbidity but also increases the risk of anesthesia and weakens the outcome of the surgery. Given the importance of the issue and the limited studies on glucose control using insulin glargine during surgery, we aimed to investigate the effects of glargine on glucose control in patients with diabetes mellitus during vitrectomy surgery. Read More

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Observed increasing water constraint on vegetation growth over the last three decades.

Nat Commun 2021 06 18;12(1):3777. Epub 2021 Jun 18.

Department of Environmental Science Policy and Management, University of California, Berkeley, CA, USA.

Despite the growing interest in predicting global and regional trends in vegetation productivity in response to a changing climate, changes in water constraint on vegetation productivity (i.e., water limitations on vegetation growth) remain poorly understood. Read More

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The health workforce demand: a systematic literature review.

Cien Saude Colet 2021 14;26(suppl 1):2431-2448. Epub 2021 Jun 14.

Departamento de Ciências Sociais, Políticas e do Território, Unidade de Investigação em Governança, Competitividade e Políticas Públicas (GOVCOPP), Universidade de Aveiro. Campus Universitário de Santiago. 3810-193 Aveiro. Portugal.

Understanding imbalances between the supply and demand of the human resour- ces for health (HRH) is essential for enhancing health outcomes. Addressing the HRH demand is particularly challenging, especially given the deficit of accurate data and surplus of unresolved methodological flaws. This study presents a systematic review of the literature surrounding HRH demand and answers the following key questions: How has HRH demand been addressed? What are the harms and barriers that accompany HRH demand modeling? This systematic review was performed following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-analyses) statement. Read More

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Blockchain Based Transaction System with Fungible and Non-Fungible Tokens for a Community-Based Energy Infrastructure.

Sensors (Basel) 2021 May 31;21(11). Epub 2021 May 31.

Department of Electrical Engineering and Computer Science, University of Stavanger, 4021 Stavanger, Norway.

Renewable energy microgeneration is rising leading to creation of prosumer communities making it possible to extract value from surplus energy and usage flexibility. Such a peer-to-peer energy trading community requires a decentralized, immutable and access-controlled transaction system for tokenized energy assets. In this study we present a unified blockchain-based system for energy asset transactions among prosumers, electric vehicles, power companies and storage providers. Read More

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Joint Green Marketing Decision-Making of Green Supply Chain Considering Power Structure and Corporate Social Responsibility.

Entropy (Basel) 2021 May 1;23(5). Epub 2021 May 1.

School of Management, Shanghai University, Shanghai 200444, China.

In order to explore the impact of a manufacturer's or retailer's undertaking corporate social responsibility (CSR) and different power structures on their joint green marketing decisions and profits in the green supply chain, this paper establishes green supply chain optimization models under six different decision-making scenarios according to two different CSR bearers and three different power structures. Based on the main assumptions of a linear product demand function and CSR measured by consumer surplus, this paper solves the equilibrium solutions of the manufacturer and the retailer through game theory. The results show that: First, the difference in the degree of CSR undertaken by manufacturers and retailers leads to a difference in the ranking of optimal strategies of both parties under the three power structures. Read More

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The Effect of Perceived Overqualification on Creative Performance: Person-Organization Fit Perspective.

Front Psychol 2021 13;12:582367. Epub 2021 May 13.

School of Management, Shanghai University, Shanghai, China.

In today's business world, the phenomenon of overqualification is widespread. Organizations need to consider - how to motivate the overqualified employees to utilize their qualifications, for example, promoting creative performance. Based on person-organization (P-O) fit theory, this study explored when and how employees, who feel overqualified can engage in creative performance. Read More

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Agricultural nitrogen and phosphorus balances of Korea and Japan: Highest nutrient surplus among OECD member countries.

Environ Pollut 2021 May 12;286:117353. Epub 2021 May 12.

Division of Applied Life Science (BK 21+ Program), Gyeongsang National University, 501 Jinju-daero, Jinju, 52828, Republic of Korea; Institute of Agriculture and Life Sciences, Gyeongsang National University, 501 Jinju-daero, Jinju, 52828, Republic of Korea. Electronic address:

Excessive nutrient balance is a very crucial issue for environmental hazards. The constant addition of high-amounts of nutrient sources in agricultural production generates negative environmental conditions in Korea and Japan yet to be resolved. Therefore, it is obligatory to comprehend the nutrient (nitrogen (N) and phosphorus (P)) balance that is assessed by the difference between nutrient input and output in the soil surface in Korea and Japan. Read More

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Projected changes in temperature, precipitation and potential evapotranspiration across Indus River Basin at 1.5-3.0 °C warming levels using CMIP6-GCMs.

Sci Total Environ 2021 Oct 20;789:147867. Epub 2021 May 20.

State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China; Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Institute for Disaster Risk Management, School of Geographical Science, Nanjing University of Information Science & Technology, Nanjing 210044, China. Electronic address:

The projections of mean temperature, precipitation (P), and potential evapotranspiration (PET) reflect the probabilities of long-term changes of hydrologic processes and induced extreme events. In this paper, we investigated the future changes in some pivotal climatic variables (mean temperature, precipitation, and potential evapotranspiration) under 1.5 °C, 2. Read More

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October 2021

A randomized controlled trial to evaluate the use of a web-based application to manage medications during in vitro fertilization.

Fertil Steril 2021 May 17. Epub 2021 May 17.

Division of Reproductive Endocrinology and Infertility, Department of Obstetrics and Gynecology, Washington University in St. Louis, Saint Louis, Missouri.

Objective: To evaluate the use of a web-based application that assists in medication management during in vitro fertilization (IVF) treatment.

Design: Multicenter randomized controlled trial.

Setting: University hospitals. Read More

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Three decades of regulation of agricultural nitrogen losses: Experiences from the Danish Agricultural Monitoring Program.

Sci Total Environ 2021 Sep 8;787:147619. Epub 2021 May 8.

Aarhus University, Department of Bioscience, Vejlsøvej 25, DK-8600 Silkeborg, Denmark.

Excess nitrogen (N) losses from intensive agricultural production are a world-wide problem causing eutrophication in vulnerable aquatic ecosystems such as estuaries. Therefore, Denmark as one of the most intensively farmed countries in the world has enforced mandatory regulations on agricultural production since the late 1980s. We demonstrate the outcome of the regulations imposed on agriculture by analyzing decadal trends in nitrate (NO) concentrations and loads in streams using 29 years of detailed monitoring data and survey information on agricultural practices at field level from five intensively cultivated headwater catchments. Read More

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September 2021

A Review of Beef Production Systems for the Sustainable Use of Surplus Male Dairy-Origin Calves Within the UK.

Front Vet Sci 2021 27;8:635497. Epub 2021 Apr 27.

Institute for Global Food Security, School of Biological Sciences, Queens University Belfast, Belfast, United Kingdom.

The UK dairy herd is predominantly of the Holstein-Friesian (HF) breed, with a major emphasis placed on milk yield. Subsequently, following years of continued single-trait selection, the beef production potential of dairy bred calves has declined. Thus, male HF calves are commonly seen as a by-product of the dairy industry. Read More

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Bi-Directional Mutual Energy Trade between Smart Grid and Energy Districts Using Renewable Energy Credits.

Sensors (Basel) 2021 Apr 29;21(9). Epub 2021 Apr 29.

Department of Electrical & Computer Engineering, Abbottabad Campus, COMSATS University Islamabad, Abbottabad 22060, Pakistan.

A central authority, in a conventional centralized energy trading market, superintends energy and financial transactions. The central authority manages and controls transparent energy trading between producer and consumer, imposes a penalty in case of contract violation, and disburses numerous rewards. However, the management and control through the third party pose a significant threat to the security and privacy of consumers'/producers' (participants) profiles. Read More

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"Millefeuille Technique" by Using Excised Intimal Layers in Repair of Type A Aortic Dissection.

Heart Lung Circ 2021 Apr 30. Epub 2021 Apr 30.

Nagoya University Graduate School of Medicine, Department of Cardiac Surgery, Nagoya, Aichi, Japan.

Surgical outcomes for acute Type A aortic dissection (AAD) have dramatically improved in recent years due to prompt diagnosis, improved surgical technique and perioperative management. A single needle hole can become a new entry point in AAD cases with such a fragile wall, so a mixed technique using minimal surgical stitches and glue is required for a good outcome. The 'Millefeuille' technique involves multiple layers with a prosthetic graft, intimal layer, additionally inserted surplus intimal layer with BioGlue, adventitial layer, and felt. Read More

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The Dispensable Surplus Dairy Calf: Is This Issue a "Wicked Problem" and Where Do We Go From Here?

Front Vet Sci 2021 14;8:660934. Epub 2021 Apr 14.

Animal Welfare Program, Faculty of Land and Food Systems, University of British Columbia, Vancouver, BC, Canada.

Surplus dairy calves consist of all dairy bull calves and any heifer calves not needed as replacements for the milking herd. The fate of these surplus calves varies by region; for example, in Australia and New Zealand they are often sold as "bobby" calves and slaughtered within the first weeks of life; whereas, in North America they are normally sold within the first weeks of life but reared for 16-18 weeks as veal or longer as dairy beef. Regardless of region, demand for these calves is often very low, driving down prices and in some cases leaving farmers with no alternative options other than on-farm euthanasia. Read More

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Factors Affecting the Welfare of Unweaned Dairy Calves Destined for Early Slaughter and Abattoir Animal-Based Indicators Reflecting Their Welfare On-Farm.

Front Vet Sci 2021 16;8:645537. Epub 2021 Apr 16.

Teagasc, Animal and Grassland Research and Innovation Centre, Fermoy, Ireland.

In many dairy industries, but particularly those that are pasture-based and have seasonal calving, "surplus calves," which are mostly male, are killed at a young age because they are of low value and it is not economically viable to raise them. Such calves are either killed on farm soon after birth or sent for slaughter at an abattoir. In countries where calves are sent for slaughter the age ranges from 3-4 days (New Zealand and Australia; "bobby calves") to 3-4 weeks (e. Read More

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Greenhouse gas emissions and nitrogen efficiency of dairy cows of divergent economic breeding index under seasonal pasture-based management.

J Dairy Sci 2021 Jul 30;104(7):8039-8049. Epub 2021 Apr 30.

Teagasc, Animal and Grassland Research and Innovation Centre, Moorepark, Fermoy, Co. Cork, P61 C996, Ireland. Electronic address:

Greenhouse gas (GHG) emissions and nitrogen (N) efficiencies were modeled for 2 genetic groups (GG) of Holstein-Friesian cows across 3 contrasting feeding treatments (FT). The 2 GG were (1) high economic breeding index (EBI) animals representative of the top 5% of cows nationally (elite) and (2) EBI representative of the national average (NA). The FT represented (1) generous feeding of pasture, (2) a slight restriction in pasture allowance, and (3) a high-concentrate feeding system with adequate pasture allowance. Read More

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Characteristics and drivers of daily nitrogen and phosphorus losses from rice-rapeseed rotation systems in the middle reaches of the Yangtze River.

Environ Sci Pollut Res Int 2021 Apr 30. Epub 2021 Apr 30.

National Engineering Laboratory for Lake Pollution Control and Ecological Restoration, Institute of Lake Ecological Environment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, People's Republic of China.

Crop production systems involving the use of high rates of fertilizer application caused significant losses of nitrogen (N) and phosphorus (P) to the environment, resulting in air pollution and water body eutrophication. Quantitating N and P losses and its drivers in crop production systems was critical for optimizing water and fertilizer management measures to mitigate the nutrient losses. However, N and P losses estimation remains highly uncertain in the field at event scale. Read More

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Perspectives on the Management of Surplus Dairy Calves in the United States and Canada.

Front Vet Sci 2021 13;8:661453. Epub 2021 Apr 13.

Department of Population Medicine, University of Guelph, Guelph, ON, Canada.

The care of surplus dairy calves is a significant issue for the United States and Canadian dairy industries. Surplus dairy calves commonly experience poor welfare as evidenced by high levels of mortality and morbidity, and negative affective states resulting from limited opportunities to express natural behaviors. Many of these challenges are a result of a disaggregated production system, beginning with calf management at the dairy farm of origin and ending at a calf-raising facility, with some calves experiencing long-distance transportation and commingling at auction markets or assembly yards in the interim. Read More

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Predicting Adaptations to Resistance Training Plus Overfeeding Using Bayesian Regression: A Preliminary Investigation.

J Funct Morphol Kinesiol 2021 Apr 21;6(2). Epub 2021 Apr 21.

Energy Balance & Body Composition Laboratory, Department of Kinesiology & Sport Management, Texas Tech University, Lubbock, TX 79409, USA.

Relatively few investigations have reported purposeful overfeeding in resistance-trained adults. This preliminary study examined potential predictors of resistance training (RT) adaptations during a period of purposeful overfeeding and RT. Resistance-trained males ( = 28; = 21 completers) were assigned to 6 weeks of supervised RT and daily consumption of a high-calorie protein/carbohydrate supplement with a target body mass (BM) gain of ≥0. Read More

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Enhanced biomethane production by co-digestion of mixed sewage sludge and dephenolised two-phase olive pomace.

Waste Manag Res 2021 Apr 28:734242X211003979. Epub 2021 Apr 28.

LEAF-Linking Landscape, Environment, Agriculture and Food-Research Center, Instituto Superior de Agronomia, Universidade de Lisboa, Portugal.

In this study, co-digestion of mixed sewage sludge from a wastewater treatment plant (WWTP) and partially dephenolised two-phase olive pomace (DOP) as a co-substrate was addressed with the aim of improving the biodigestibility of both substrates. The introduction of DOP into WWTP anaerobic digester facilities could significantly increase biomethane production and enhance the sustainability of both activities. An improvement in the system's performance was supported by stability parameters: total alkalinity increased and stabilised with the addition of 5% v/v DOP, and the specific energy loading rate was maintained at 0. Read More

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Sustainability efficiency assessment of listed companies in China: a super-efficiency SBM-DEA model considering undesirable output.

Environ Sci Pollut Res Int 2021 Apr 24. Epub 2021 Apr 24.

School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.

Chinese listed companies play a vital role in national economy, which has contributed more than half of the gross domestic product. But the environmental pollution existed in the production and operation of companies has been ignored, so an objective and comprehensive efficiency assessment of Chinese listed companies were urgent. This paper constructed an index system based on green perspective, employed a super-efficiency slacks-based measure DEA (SBM-DEA) model considering undesirable outputs to assess the sustainability efficiency of Chinese listed companies. Read More

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Nitrogen leaching and grey water footprint affected by nitrogen fertilization rate in maize production: a case study of Southwest China.

J Sci Food Agric 2021 Apr 19. Epub 2021 Apr 19.

College of Resources and Environment, Academy of Agricultural Sciences, Southwest University, Chongqing, China.

Background: Effective nitrogen (N) management measures are required to control environmental problems caused by N fertilizer use in intensive maize production systems. Soil N losses associated with high precipitation and over-fertilization in maize production can cause substantial environmental problems, whereas there is a lack of quantitative data and effective study countermeasures. A 2-year field study was conducted in the subtropical maize production system in Southwest China to quantify N leaching under varying N application rates of 0, 90, 180, 270 and 360 kg N ha yr . Read More

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Anthropomorphic Capital and Commonwealth Value.

Front Sociol 2020 30;5:24. Epub 2020 Apr 30.

Effimera.org, Milan, Italy.

In this essay, we intend to analyze the process of accumulation of contemporary capitalism, in which the regime of valorization derive from the notion of "common" a "results of social production that are necessary for social interaction and further production, such as knowledges, languages, information affect, and so forth" (Hardt and Negri, 2009) and from its expropriation. When we deal with the concept of "common," the reference is made to a heterogeneous category. In this text we refer to two modalities of expression of the "common:" the digital common (section network value) and the common of social reproduction (section social reproduction value or the economy of the interiority and anthropomorphic capital). Read More

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Characterization of Groundwater Recharge and Flow in California's San Joaquin Valley From InSAR-Observed Surface Deformation.

Water Resour Res 2021 Apr 7;57(4):e2020WR028451. Epub 2021 Apr 7.

California Water Science Center U.S. Geological Survey Sacramento CA USA.

Surface deformation in California's Central Valley (CV) has long been linked to changes in groundwater storage. Recent advances in remote sensing have enabled the mapping of CV deformation and associated changes in groundwater resources at increasingly higher spatiotemporal resolution. Here, we use interferometric synthetic aperture radar (InSAR) from the Sentinel-1 missions, augmented by continuous Global Positioning System (cGPS) positioning, to characterize the surface deformation of the San Joaquin Valley (SJV, southern two-thirds of the CV) for consecutive dry (2016) and wet (2017) water years. Read More

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