energy

能源
  • 文章类型: Journal Article
    中尺度到纳米级三维(3D)制造通常需要复杂的工业加工技术。这里,我们提出了一种通过在多边形润湿性图案化表面上固化水基TiO2纳米液滴来进行3D成型控制的方案。我们详细介绍了制备稳定的TiO2纳米流体和润湿性图案化表面的步骤。然后,我们描述了通过调节沉积的TiO2纳米流体液滴体积来获得各种精确的3D形貌的实验程序。该协议为未来的3D制造提供了一种有前途的技术。有关此协议的使用和执行的完整详细信息,请参考Jiang等人1。
    Mesoscale to nanoscale three-dimensional (3D) fabrication mostly requires complicated industry processing techniques. Here, we present a protocol for 3D shaping control by solidifying a water-based TiO2 nanofluid drop on a polygonal wettability-patterned surface. We detail the steps for preparing stable TiO2 nanofluid and wettability-patterned surfaces. We then describe the experimental procedure to obtain various and precise 3D morphologies by adjusting the deposited TiO2 nanofluid drop volume. This protocol provides a promising technique for future 3D manufacturing. For complete details on the use and execution of this protocol, please refer to Jiang et al.1.
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  • 文章类型: Journal Article
    目的:本研究的目的是研究营养治疗对成人严重烧伤患者的影响。
    方法:纳入60例成人严重烧伤患者。收集损伤后第7、14、21和28天通过肠内营养(EN)或肠胃外营养(PN)的营养摄入数据。根据患者的能量或蛋白质摄入是否达到目标,将患者分为目标组和非目标组。年龄,通风长度,和总胆红素(TBIL),白蛋白(ALB),前白蛋白(pALB),记录患者C反应蛋白(CRP)浓度。
    结果:具有蛋白质递送的蛋白质靶标的百分比低于具有能量递送的能量靶标的百分比。在第7、14、21和28天,PN蛋白与总蛋白的比率低于PN能量与总能量的比率(分别为p<0.001,p<0.001,p=0.001和p=0.003)。与第21天的非目标组相比,目标组更年轻,第7天TBIL较低,第21天ALB和pALB较高,第14天CRP较低(分别为p=0.025,p=0.021,p=0.028,p=0.029和p=0.049)。多因素logistic回归分析显示,年龄大、通气时间长是第21天营养指标达不到患者的独立危险因素(分别为p=0.026和p=0.043)。
    结论:严重烧伤的成年患者的蛋白质摄入量较低。与非目标群体相比,目标组的实验室检查结果较好。年龄大、通气时间长是患者未达到营养目标的独立危险因素。
    OBJECTIVE: The objective of this study was to examine the effects of nutritional therapy in adult patients with severe burns.
    METHODS: Sixty adult patients with severe burns were enrolled. Data on nutritional intake through enteral nutrition (EN) or parenteral nutrition (PN) on days 7, 14, 21, and 28 post-injury were collected. Patients were divided into target and non-target groups according to whether their energy or protein intake reached the target. Age, length of ventilation, and total bilirubin (TBIL), albumin (ALB), prealbumin (pALB), and C-reactive protein (CRP) concentrations of patients were recorded.
    RESULTS: The percentage of protein targets with protein delivery was lower than that of energy target with energy delivery. The ratio of PN protein to total protein was lower than that of PN energy to total energy on days 7, 14, 21, and 28 (p<0.001, p<0.001, p=0.001, and p=0.003, respectively). Compared to the non-target group on day 21, the target group was younger, had lower TBIL on day 7, higher ALB and pALB on day 21, and lower CRP on day 14 (p=0.025, p=0.021, p=0.028, p=0.029, and p=0.049, respectively). Multivariate logistic regression analysis showed that older age and longer ventilation were independent risk factors in patients who did not meet the nutritional target on day 21 (p=0.026 and p=0.043, respectively).
    CONCLUSIONS: The protein intake of adult patients with severe burns was low. Compared to the non-target group, the target group had better laboratory test results. Older age and longer ventilation were independent risk factors for patients not meeting the nutritional target.
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  • 文章类型: Journal Article
    目的:比较估计食物的差异,能源,和营养素摄入量介于连续3天24小时饮食召回(24HR)(简称3天法)和连续2天24HR(简称2天法)之间,为我国营养监测采用连续2天24HR提供依据。
    方法:使用客观抽样选择北部和南部省份的参与者,饮食数据是通过连续3天24HR获得的,和食物的平均摄入量,能量和营养计算为从周四到周六的三天和周五和周六的两天,分别。3天方法被认为是评估2天方法评估食物的性能的参考标准方法,能量和营养摄入量。
    结果:在两个省的城市和农村地区的778名年龄在18-60岁的参与者中,与3天方法相比,用于估计四种主要食物类别摄入量的2天方法的平均值和中位数的误差小于6%,四类食物组存在显著的等效性(P>0.025),差异无统计学意义(P>0.05)。在2天方法估计的24个食物组中,17的平均误差在5%以内,最大的误差是动物内脏(13.45%),最小的是水果(0.15%),七个食物组之间存在显着等效性(P&lt;0.025),而没有显着差异(P&gt;0.05)。为了能量和营养,能量的平均和中位误差小于0.5%,存在显著的等效性(P<0.025),能量无显著差异(P>0.05).在25种营养素中,除了钠,碘和维生素E,其他22种营养素的平均和中位数误差小于5%,16种营养素存在显著等效性(P>0.025),差异无统计学意义(P>0.05)。
    结论:两种调查方法在评估高消费频率食物的摄入量方面几乎没有差异,能量和大多数营养素在群体水平上,2日方法可作为3日方法的替代方法,用于收集人群高消费率的膳食摄入量数据.
    OBJECTIVE: To compare the differences in estimated food, energy, and nutrient intakes between the consecutive 3 days 24-hour dietary recall(24HR)(referred to as the 3-day method) and consecutive 2 days 24HR(referred to as the 2-day method) to provide a basis for the use of consecutive 2 days 24HR in China nutrition surveillance.
    METHODS: Using objective sampling to select participants in northern and southern provinces, dietary data were obtained through consecutive 3 days 24HR, and the average intakes of food, energy and nutrients were calculated for three days from Thursday to Saturday and two days on Friday and Saturday, respectively. The 3-day method was considered as the reference standard method to evaluate the performance of the 2-day method for estimating food, energy and nutrient intakes.
    RESULTS: Among 778 participants aged 18-60 years in urban and rural areas of two provinces, the errors of the mean and median of 2-day method for estimating the intake of four major food categories less than 6% compared with the 3-day method, and there were significant equivalencies(P<0.025) and no significant differences in four major food categories group(P>0.05). Of the 24 food groups estimated by the 2-day method, 17 had mean errors within 5%, the largest error was in animal offal(13.45%) and the smallest in fruit(0.15%), and there were significant equivalencies(P<0.025) and no significant differences in seven food groups(P>0.05). For energy and nutrients, the mean and median errors of energy were less than 0.5% and there were significant equivalencies(P<0.025) and no significant differences for energy(P>0.05). Among the 25 nutrients, except sodium, iodine and vitamin E, the mean and median errors of the other 22 nutrients were less than 5%, and there were significant equivalencies(P<0.025) and no significant differences in 16 nutrients(P>0.05).
    CONCLUSIONS: There was little difference between the two survey method in assessing the intake of high consumption frequency foods, energy and most nutrients at group level, the 2-day method can be used as an alternative to the 3-day method to collect dietary intake data with high consumption rates in the population.
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  • 文章类型: Journal Article
    制备具有持久钝化效果的钙钛矿太阳能电池(PSC)是具有挑战性的。这里,我们提出了一种制造高效和稳定的钝化钙钛矿太阳能电池的协议。我们描述了通过化学浴沉积和钙钛矿膜制备电子传输层(ETL)的步骤。然后,我们详细介绍了用过量的三联吡啶配体钝化表面缺陷的程序和稳定性表征。该协议具有钝化剂-三吡啶,其钝化效果与浓度无关,大大提高了钝化的耐久性。有关此协议的使用和执行的完整详细信息,请参考王等人。1.
    Preparation of perovskite solar cells (PSCs) with long-lasting passivation effectiveness is challenging. Here, we present a protocol for fabricating efficient and stable passivated perovskite solar cells. We describe steps for preparing the electron transporting layer (ETL) via chemical bath deposition and perovskite film. We then detail procedures for passivating the surface defects with excess terpyridine ligands and stability characterization. This protocol features a passivator-terpyridine whose passivation effect is independent of concentration, which greatly improves the durability of the passivation. For complete details on the use and execution of this protocol, please refer to Wang et al.1.
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  • 文章类型: Journal Article
    Leber的遗传性视神经病变(LHON)是一种与线粒体DNA(mtDNA)突变相关的使人衰弱的线粒体疾病。不幸的是,由于线粒体替代的挑战,LHON患者的可用治疗选择有限.在我们的研究中,我们将LHON尿液细胞重编程为诱导多能干细胞(iPSCs),并将其分化为神经祖细胞(NPCs)和神经元,用于疾病建模.我们的研究表明,LHON神经元表现出显著较高水平的mtDNA突变和线粒体功能降低。确认疾病表型。然而,通过将LHONiPSC衍生的NPCs与间充质干细胞(MSCs)共培养,我们观察到突变mtDNA的显着拯救和LHON神经元线粒体代谢功能的显着改善。这些发现表明,与MSCs共培养可以增强LHONNPCs的线粒体功能,甚至在它们分化为神经元之后。这一发现有望成为LHON患者的潜在治疗策略。
    Leber\'s hereditary optic neuropathy (LHON) is a debilitating mitochondrial disease associated with mutations in mitochondrial DNA (mtDNA). Unfortunately, the available treatment options for LHON patients are limited due to challenges in mitochondrial replacement. In our study, we reprogramming LHON urine cells into induced pluripotent stem cells (iPSCs) and differentiating them into neural progenitor cells (NPCs) and neurons for disease modeling. Our research revealed that LHON neurons exhibited significantly higher levels of mtDNA mutations and reduced mitochondrial function, confirming the disease phenotype. However, through co-culturing LHON iPSC-derived NPCs with mesenchymal stem cells (MSCs), we observed a remarkable rescue of mutant mtDNA and a significant improvement in mitochondrial metabolic function in LHON neurons. These findings suggest that co-culturing with MSCs can enhance mitochondrial function in LHON NPCs, even after their differentiation into neurons. This discovery holds promise as a potential therapeutic strategy for LHON patients.
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  • 文章类型: Journal Article
    该项目旨在开发用于可持续能源应用的多孔材料,即,储氢,以及生物质向可再生燃料的增值。该项目的核心是针对非洲研究人员的培训计划,内容包括:(i)开发当地可利用的可再生原材料;(ii)使用先进的最新技术设计和合成多孔材料(沸石和金属有机骨架(MOFs)),以储存能量;(iii)将可持续的低价值原料用于可再生燃料。我们发现,在高压下压缩UiO-66MOF可以提高体积储氢能力,而重量吸收没有任何损失。并通过实验证明了UiO-66的温度依赖性动态行为,这使我们能够为UiO-66提出≤150°C的活化温度。共造粒用于将UiO-66/纳米纤维整料制造为具有增强的可用(即可交付)储氢能力的分层多孔材料。我们阐明了使用天然存在的高岭土作为沸石合成的二氧化硅和氧化铝物种的来源。高岭土衍生的沸石X已成功用作麻疯树油(来自非食用生物质)酯交换为生物柴油的催化剂。我们还制备了成功应用于电化学传感的多孔复合材料(即碳/UiO-66,有机粘土/UiO-66和沸石/碳)。
    The project aimed to develop porous materials for sustainable energy applications, namely, hydrogen storage, and valorization of biomass to renewable fuels. At the core of the project was a training programme for Africa-based researchers in (i) the exploitation of renewable locally available raw materials; (ii) the use of advanced state-of-the-art techniques for the design and synthesis of porous materials (zeolites and metal-organic frameworks (MOFs)) for energy storage; and (iii) the valorization of sustainable low-value feedstock to renewable fuels. We found that compaction of the UiO-66 MOF at high pressure improves volumetric hydrogen storage capacity without any loss in gravimetric uptake, and experimentally demonstrated the temperature-dependent dynamic behaviour of UiO-66, which allowed us to propose an activation temperature of ≤ 150°C for UiO-66. Co-pelletization was used to fabricate UiO-66/nanofibre monoliths as hierarchical porous materials with enhanced usable (i.e. deliverable) hydrogen storage capacity. We clarified the use of naturally occurring kaolin as a source of silica and alumina species for zeolite synthesis. The kaolin-derived zeolite X was successfully used as a catalyst for the transesterification of Jatropha curcas oil (from non-edible biomass) to biodiesel. We also prepared porous composites (i.e. carbon/UiO-66, organoclay/UiO-66 and zeolite/carbon) that were successfully applied in electrochemical sensing.
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  • 文章类型: Journal Article
    神经元,表现出独特的极化结构,主要依靠线粒体ATP的产生来维持它们的高代谢能量需求。为了维持正常的能源供应,线粒体被运送到轴突的远端。当轴突内的线粒体严重受损,超出其代偿能力时,它们通过自噬吞噬被清除,降解产物被回收以补充能量。当线粒体功能失调或其运输过程受阻时,轴突变得容易受到能量消耗引发的退化,导致神经退行性疾病。作为线粒体质量控制的最终检查点,轴突线粒体自噬对神经元生长至关重要,发展,损伤,和再生。此外,异常的轴突线粒体自噬在视神经相关疾病如青光眼的发病机制中至关重要。本文综述了近年来轴突线粒体自噬的相关研究,并总结了轴突线粒体自噬在视神经相关疾病中的研究进展,以期为视神经节细胞轴突损伤相关疾病提供见解。
    Neurons, exhibiting unique polarized structures, rely primarily on the mitochondrial production of ATP to maintain their hypermetabolic energy requirements. To maintain a normal energy supply, mitochondria are transported to the distal end of the axon. When mitochondria within the axon are critically damaged beyond their compensatory capacity, they are cleared via autophagosomal phagocytosis, and the degradation products are recycled to replenish energy. When the mitochondria are dysfunctional or their transport processes are blocked, axons become susceptible to degeneration triggered by energy depletion, resulting in neurodegenerative diseases. As the final checkpoint for mitochondrial quality control, axonal mitophagy is vital for neuronal growth, development, injury, and regeneration. Furthermore, abnormal axonal mitophagy is crucial in the pathogenesis of optic nerve-related diseases such as glaucoma. We review recent studies on axonal mitophagy and summarize the progress of research on axonal mitophagy in optic nerve-related diseases to provide insights into diseases associated with axonal damage in optic ganglion cells.
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  • 文章类型: Journal Article
    烟草,一种广泛种植的作物,已经被人类广泛利用了很长一段时间。然而,烟草业产生了大量的有机废物,这种烟草废物的有效利用受到限制。目前,大多数烟草废物要么作为再造烟草片回收利用,要么在垃圾填埋场处置。然而,烟草具有比这些应用更多的潜在价值。本文概述了烟草废物在农业中的多种用途,医学,化学工程,和能源部门。在农业领域,烟草废物主要用作肥料和杀虫剂。在医疗应用中,烟草中存在的生物活性化合物被充分利用,导致苯酚的产生,茄尼醇,多糖,蛋白质,甚至生物碱。这些生物活性化合物对人类健康表现出有益作用。此外,烟草废物在化学工程和能源领域的应用集中在木质纤维素化合物和某些燃料的利用上。来自烟草废物的化学平台化合物,以及选定的燃料来源,在这些领域发挥重要作用。烟草废弃物的合理利用具有广阔的前景,特别是在当今广泛倡导可持续发展的时代。此外,这种方法对于提高能源利用率具有重要意义。
    Tobacco, a widely cultivated crop, has been extensively utilized by humans for an extended period. However, the tobacco industry generates a significant amount of organic waste, and the effective utilization of this tobacco waste has been limited. Currently, most tobacco waste is either recycled as reconstituted tobacco sheets or disposed of in landfills. However, tobacco possesses far more potential value than just these applications. This article provides an overview of the diverse uses of tobacco waste in agriculture, medicine, chemical engineering, and energy sectors. In the realm of agriculture, tobacco waste finds primary application as fertilizers and pesticides. In medical applications, the bioactive compounds present in tobacco are fully harnessed, resulting in the production of phenols, solanesol, polysaccharides, proteins, and even alkaloids. These bioactive compounds exhibit beneficial effects on human health. Additionally, the applications of tobacco waste in chemical engineering and energy sectors are centered around the utilization of lignocellulosic compounds and certain fuels. Chemical platform compounds derived from tobacco waste, as well as selected fuel sources, play a significant role in these areas. The rational utilization of tobacco waste represents a promising prospect, particularly in the present era when sustainable development is widely advocated. Moreover, this approach holds significant importance for enhancing energy utilization.
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  • 文章类型: Journal Article
    我们先前的临床代谢组学研究表明,能量代谢障碍是酒精性肝病(ALD)发展的潜在发病机制。补充烟酰胺(NAM),烟酰胺腺嘌呤二核苷酸(NAD+)的前体,可以恢复ALD的能量代谢稳态,因此可以作为治疗ALD的潜在治疗剂。在这个床边到长凳的研究中,NAM对ALD的保护作用通过使用NIAAA小鼠模型(慢性加暴饮暴食乙醇),并通过部分肝切除小鼠模型评估NAM的肝再生促进能力。我们的结果表明,NAM补充剂不仅可以保护肝脏免受酒精引起的损伤,而且可以改善酒精引起的线粒体结构和功能变化。但也通过增加肝脏NAD+含量促进部分肝切除术后小鼠的肝脏再生。这些发现表明,不结盟运动,维生素B3的水溶性形式,可以通过缓解酒精引起的能量代谢障碍来促进肝脏再生和改善肝功能。
    Our previous clinical metabolomics study illustrated that energy metabolism disorder is an underlying pathogenesis mechanism for the development of alcoholic liver disease (ALD). Supplementation of nicotinamide (NAM), the precursor of nicotinamide adenine dinucleotide (NAD+), may restore the energy metabolism homeostasis of ALD and thus serves as potential therapeutics to treat ALD. In this bedside-to-bench study, the protective effect of NAM against ALD was investigated by using the NIAAA mice model (chronic-plus-binge ethanol), and the liver regeneration boosting capability of NAM was evaluated by the partial hepatectomy mice model. Our results showed that NAM supplements not only protected the liver from alcohol-induced injury and improved alcohol-induced mitochondrial structure and function change, but also boosted liver regeneration in postpartial hepatectomy mice by increasing liver NAD+ content. These findings suggested that NAM, a water-soluble form of vitamin B3, can promote liver regeneration and improves liver function by alleviating alcohol-induced energy metabolism disorder.
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  • 文章类型: Journal Article
    由于再生纸材料的异质性和生产条件,造纸废水中的污染物随时间急剧波动。造纸废水处理工艺(PWTP)的质量控制具有挑战性且成本高昂。随着有关PWTP对温室气体(GHG)排放的环境影响的法规也越来越多,能源消耗,等。,PWTP制定了一个复杂的多目标优化问题。本研究建立了一个多主体深度强化学习框架,以同时优化过程成本,能源消耗,和PWTP中的温室气体排放,根据出水水质,为了实现经济,能源,和环境(3E)目标。使用基准模拟模型No.模拟了造纸厂废水的生物处理过程。1(BSM1)。基于BSM手册生成的数据用于模型训练,并使用从当地造纸厂获得的真实数据来估计模型性能。结果表明,该方法在识别多目标的最佳控制策略方面优于常规技术。
    Due to the heterogeneity of recycled paper materials and the production conditions, pollutants in papermaking wastewater fluctuate sharply over time. Quality control of the papermaking wastewater treatment process (PWTP) is challenging and costly. As regulations are also growing about the environmental effects of the PWTP on greenhouse gas (GHG) emission, energy consumption, etc., the PWTP formulates a complex multiobjective optimization problem. This research established a multiagent deep reinforcement learning framework to simultaneously optimize process cost, energy consumption, and GHG emission in the PWTP, subjected to the effluent quality, to realize economic, energy, and environmental (3E) goals. The biological treatment process of wastewater in paper mills was simulated using benchmark simulation model no. 1 (BSM1). The data generated based on the BSM manual was utilized for model training, and real data acquired from a local papermaking factory was used to estimate the model performance. The results show that the proposed method outperforms conventional techniques in identifying the best control strategies for multiple targets.
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