NEXUS

nexus
  • 文章类型: Journal Article
    渔业部门是西班牙北部经济收入的重要来源。在这种情况下,各种研究都集中在五步生命周期评估(LCA)和数据包络分析(DEA)方法的应用上,以量化捕鱼系统的环境影响。然而,他们中的一些人使用了关注个别环境问题的环境指标,阻碍了实现综合资源管理的目标。因此,在这项研究中,水-能源-食品(WEF)关系被用作综合视角,考虑碳足迹之间的协同作用和权衡,能源需求,和水的需求。这项研究的主要目的是评估坎塔布连捕鱼船队的运营效率和环境影响。为此,LCA和DEA的结合使用,随着世界经济论坛的Nexus,适用于坎塔布连围网舰队。使用LCA导出的WEF关联值作为输入来生成DEA矩阵,以计算每个船只的效率得分。随后,基于DEA模型提供的效率预测,进行了新的影响评估,以了解在该船队中以更高的效率运行的生态效率和潜在的环境效益。车队的平均效率超过60%。效率低下的单位显示出通过根据效率预测来减少其对环境的影响(高达65%)的更大潜力。此外,结果表明,环境影响强烈依赖于其中一项运营投入,即,燃料消耗。这些发现强调了拥抱结合技术的整体方法的重要性,经济,和社会因素,以实现渔业系统的可持续平衡。在这方面,与WEFNexus结合使用的五步LCADEA方法成为衡量运营和环境目标的合适工具。
    The fishing sector constitutes an important source of economic revenue in northern Spain. In this context, various research studies have focused on the application of the five-step Life Cycle Assessment (LCA) and Data Envelopment Analysis (DEA) methodology to quantify environmental impacts of fishing systems. However, some of them have used environmental indicators that focus on individual environmental issues, hindering the goal of achieving integrated resource management. Therefore, in this study, the Water-Energy-Food (WEF) Nexus is employed as an integrative perspective that considers the synergies and trade-offs between carbon footprint, energy requirements, and water demand. The main objective of this study is to evaluate the operational efficiency and environmental impacts of Cantabrian fishing fleets. To this end, the combined use of LCA and DEA, along with the WEF Nexus, was applied to the Cantabrian purse seine fleet. DEA matrices were generated using the LCA-derived WEF nexus values as inputs to calculate efficiency scores for each vessel. Subsequently, based on the efficiency projections provided by the DEA model, a new impact assessment was performed to understand the eco-efficiency and potential environmental benefits of operating at higher levels of efficiency within this fleet. The average efficiency of the fleet was above 60 %. Inefficient units demonstrated a greater potential to reduce their environmental impacts (up to 65 %) by operating according to efficiency projections. Furthermore, the results revealed a strong dependence of environmental impacts on one of the operational inputs, i.e., fuel consumption. These findings highlight the significance of embracing holistic approaches that combine technical, economic, and social factors to achieve a sustainable balance in fisheries systems. In this regard, the five-step LCA + DEA method applied in conjunction with the WEF Nexus emerged as a suitable tool for measuring operational and environmental objectives.
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  • 文章类型: Journal Article
    目的:NX-13激活NLRX1可减少结肠炎动物模型的细胞内活性氧和炎症反应。一项1a期试验证明了肠道选择性药代动力学(PK)曲线具有良好的耐受性。本Ib期研究旨在评估安全性,耐受性,活动期溃疡性结肠炎(UC)患者NX-13的PK。
    方法:我们进行了多中心,随机化,双盲,NX-13在活动性UC患者中的安慰剂对照试验。Mayo诊所评分为4-10的患者被随机分配(3:3:3:1比例)到三个NX-13口服剂量组(250mg立即释放(IR),500mgIR,或500mg延迟释放(DR)或安慰剂),每天一次,持续4周。安全和PK是首要和次要目标,分别。
    结果:招募了38名患者(11名女性),并随机分配给安慰剂(5),NX-13250mgIR(11),NX-13500mgIR(11),或NX-13500mgDR(11),并接受至少一次剂量。在试验期间没有严重不良事件(SAE)或死亡。一名患者(500毫克DR,1/11)因UC恶化而退出,第二次(500mgIR,1/11)在与心房颤动相关的恐慌发作后的最后一天治疗。在疗效人群(36例)中,早在第2周时,与安慰剂组相比,直肠出血和排便次数评分均有临床改善,第4周出现内镜缓解.
    结论:NX-13通常是安全的,耐受性良好,早期症状迅速出现,内镜改善。这种新的作用机制值得进一步研究。ClinicalTrials.gov:NCT04862741。
    OBJECTIVE: NX-13 activation of NLRX1 reduces intracellular reactive oxygen species and decreases inflammation in animal models of colitis. A phase 1a trial demonstrated a gut-selective pharmacokinetic profile with good tolerability. This phase Ib study aimed to evaluate the safety, tolerability, and pharmacokinetics of NX-13 in patients with active ulcerative colitis [UC].
    METHODS: We conducted a multicentre, randomized, double-blind, placebo-controlled trial of NX-13 in patients with active UC. Patients with a Mayo Clinic Score of 4-10 were randomly assigned [3:3:3:1 ratio] to three NX-13 oral dose groups (250 mg immediate release [IR], 500 mg IR, or 500 mg delayed release [DR], or placebo) once daily for 4 weeks. Safety and pharmacokinetics were the primary and secondary objectives, respectively.
    RESULTS: Thirty-eight patients [11 females] were recruited and randomized to placebo [five], NX-13 250 mg IR [11], NX-13 500 mg IR [11], or NX-13 500 mg DR [11] and received at least one dose. There were no serious adverse events or deaths during the trial. One patient [500 mg DR, 1/11] withdrew due to worsening of UC and a second [500 mg IR, 1/11] on the last day of treatment after a panic attack associated with atrial fibrillation. In the efficacy population [36 patients], clinical improvement in rectal bleeding and stool frequency scores relative to placebo were seen as early as week 2 and endoscopic response was seen at week 4.
    CONCLUSIONS: NX-13 was generally safe and well tolerated with early signs of rapid symptom and endoscopic improvement. This novel mechanism of action warrants further investigation. ClinicalTrials.gov: NCT04862741.
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  • 文章类型: Journal Article
    未经证实:胸部成像在评估钝性创伤患者方面发挥着重要作用。在正确的时间选择正确的方法是治疗钝性胸部创伤患者的基础。[1]一个可靠的,经济,床边,快速完成的筛查测试可能是关键。[2].
    UNASSIGNED:本研究的目的是比较创伤超声检查(E-FAST)与国家紧急X线摄影应用研究(NEXUS)胸部算法检测钝性胸部损伤的准确性。
    UNASSIGNED:这项描述性横断面研究包括来自苏伊士运河大学医院急救中心的50名多发性外伤患者,这些患者患有钝性胸部外伤。进行了E-FAST和计算机断层扫描(CT),然后报告所有患者的NEXUS标准.证实了E-FAST执行者和CT报告者的失明。将NEXUS算法和E-FAST的结果与CT胸部结果进行了比较。
    未经评估:NEXUS算法具有100%的灵敏度和15.3%的特异性,E-FAST的敏感性为70%,特异性为96.7%,在气胸的检测中。在血胸的检测中,NEXUS算法的敏感性和特异性分别为90%和7.5%,分别,而E-FAST的敏感性较低,为80%,特异性较高,为97.5%。
    未经证实:E-FAST对于血胸的检测具有高度特异性,气胸,与NEXUS胸部算法相比,胸部受伤,这表明特异性最低。然而,NEXUS胸部算法显示出比E-FAST更高的灵敏度,因此可以有效地用于排除胸部损伤.
    UNASSIGNED: Chest imaging plays a prominent role in the assessment of patients with blunt trauma. Selection of the right approach at the right time is fundamental in the management of patients with blunt chest trauma.[1] A reliable, economic, bedside, and rapidly accomplished screening test can be pivotal. [2].
    UNASSIGNED: The aim of this study was to compare the accuracy of extended- focused assessment with sonography for trauma (E-FAST) to that of the National Emergency X-Radiography Utilisation Study (NEXUS) chest algorithm in detecting blunt chest injuries.
    UNASSIGNED: This descriptive cross-sectional study included 50 polytrauma patients with blunt chest trauma from the emergency centre of Suez Canal University Hospital. E-FAST and computed tomography (CT) were conducted, followed by reporting of NEXUS criteria for all patients. Blinding of the E-FAST performer and CT reporter were confirmed. The results of both the NEXUS algorithm and E-FAST were compared with CT chest results.
    UNASSIGNED: The NEXUS algorithm had 100% sensitivity and 15.3% specificity, and E-FAST had 70% sensitivity and 96.7% specificity, in the detection of pneumothorax.In the detection of hemothorax, the sensitivity and specificity of the NEXUS algorithm were 90% and 7.5%, respectively, whereas E-FAST had a lower sensitivity of 80% and a higher specificity of 97.5%.
    UNASSIGNED: E-FAST is highly specific for the detection of hemothorax, pneumothorax, and chest injuries compared with the NEXUS chest algorithm, which demonstrated the lowest specificity. However, the NEXUS chest algorithm showed a higher sensitivity than E-FAST and hence can be used effectively to rule out thoracic injury.
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  • 文章类型: Journal Article
    未经批准:在冠状病毒流行期间,食品供应链受到这种流行病中断的影响。概述并考虑与食物相关的因素,如能源,废物,和水使供应链的设计更加有效。在这项研究中,通过考虑食物-能源-水-废物的关系,基于冠状病毒的流行,提出了可持续食品供应链的多目标模型.有双渠道销售,包括在线和面对面渠道,它们的需求函数取决于每个渠道的产品价格,以及高风险或低风险地区的冠状病毒患病率。配送中心,位于高风险地区,要求对产品进行消毒,以尽量减少冠状病毒的传播。的确,提出的数学模型有三个目标函数,第一个目标是在COVID-19条件下食品供应的利润最大化。其他两个目标不仅最小化运输对环境的影响,还有交货时间。为了解决这个多目标模型,ε约束方法,作为一种有效的技术,被雇用。为了验证所提出的模型,该模型最终在伊朗的双渠道供应链中实现。结果表明,食品供应链与能源-水-废物关系COVID-19密切相关,也会影响顾客的行为。此外,该模型显示了当COVID-19的患病率增加时,人们倾向于从网上商店购买,影响产品价格可能会变化近50%。
    UNASSIGNED: During the coronavirus epidemic, food supply chains have been affected by disruptions of this epidemic. Having an overview and considering food-related factors such as energy, waste, and water make the design of the supply chain more effective. In this study, a multi-objective model for a sustainable food supply chain is presented based on the prevalence of coronavirus by considering the food-energy-water-waste nexus. There are dual-channel sales including online and in-person channels, which their demand functions depend on products price in every channel, as well as the prevalence of coronavirus in high-risk or low-risk areas. Distribution centers, located in high-risk regions, require the disinfection of products to minimize coronavirus spread. Indeed, the proposed mathematical model has three objective functions that the first objective maximizes the profit of the food supply under COVID-19 conditions. The other two objectives minimize not only the environmental impact of transportation, but also the delivery time. In order to solve this multi-objective model, the epsilon constraint method, as an efficient technique, is employed. To validate the proposed model, the model is finally implemented in a two-channel supply chain in Iran. The results show that the food supply chain has a close relationship with the energy-water-waste nexus COVID-19 and can also affect customers\' behavior. Moreover, the model shows when the prevalence of COVID-19 increases, people tend to buy from online shops, affecting product prices that can change by nearly 50%.
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  • 文章类型: Journal Article
    This paper applies the system archetypes to investigate water, energy, food, and land nexus (WEFLN) in the Jatiluhur reservoir, the largest reservoir in Indonesia. The Jatiluhur reservoir has multiple functions such as hydropower supply and water supply for different end users. Multiple functions and multiple users mean there are tradeoffs in fulfilling the needs of different end users. Through feedback loops, the system dynamics tools concern on the interdependencies and the complexities of the nexus elements. It is found that growth engines such as industrial development and residential development support industrial and residential sectors. However, water availability will be a crucial issue as water supply can bound the growth engines. This situation is called the limits to growth archetype. Another system archetype named the success to successful is also identified. The success to successful archetype reminds us to distribute water and energy properly to sustain the growth in all sectors. Finally, outputs of this study can be a basis to develop a computer model and to support sustainable functions of the other reservoirs.
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  • 文章类型: Comparative Study
    In China, urbanization strengthens the water-food-health nexus by driving dietary changes both at home and away from home (AFH). However, few studies have compared the effects of dining location on water footprint generation and/or linked such habits to the prevalence of non-communicable diseases (NCDs), such as hypertension, diabetes, asthma, myocardial infarction, stroke and cancer. Here, household survey data were used to develop a multiple-component urbanization sequence, on which the diet-related water footprint was quantified and the mechanisms under the water-food-health nexus were explored. Significant dietary changes due to urbanization have occurred at home (instead of AHF), and increases or decreases in various food groups are stratified across dining locations. Log mean Divisia index decomposition shows that the diet-structure effect outweighing the intake effect dominates the water footprint changes during China\'s urbanization. Animal products contribute 92(94)% of the diet-structure effect on net water footprint growth at home(AFH); in contrast, vegetal foods dominate the intake effect, contributing 67(49)%. The at-home water footprint ratio of animal products to vegetal foods is highly related to the prevalence of diabetes, hypertension, cancer, and asthma, and reaching statistical significance. Two urbanization components, namely housing situation and community diversity, serve as the key drivers of water-food-health nexus enhancement in urbanized China. Due to the complexity of water-food-health links, nexus thinking is needed to benefit human health and diet-related water consumption; besides, it may be reasonable to expand current dimension of food-energy-water nexus topic to include health issues.
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