Reduction

Reduction
  • 文章类型: Journal Article
    在乳制品行业,传统的热处理以其高水和高能耗而闻名,正在寻求更经济和环保的解决方案。红外(IR)技术在能源效率和环境可持续性方面具有优势;然而,它在牛奶加工中的有效性,特别是在病原体灭活中,相对未被探索。在这项研究中,均质化生乳进行红外处理,以及它对单核细胞增生李斯特菌的影响,沙门氏菌属。,和肠杆菌科进行了评估。结果表明,IR处理有效降低了微生物负荷,达到与常规巴氏灭菌方法相当的灭活水平(约6Log10CFU/mL)。此外,治疗保持牛奶的pH值水平,表明其成分的变化最小。需要进一步的研究来探索IR治疗对牛奶卫生功效的全面程度,深入探索IR技术,全面评估其适用性,并将其融入乳品加工实践。尽管面临监管挑战,Wir系统牛奶显示出有望成为原料奶处理的具有成本效益和生态友好的替代品。
    In the dairy industry, traditional heat treatments are known for their high water and energy consumption, and more economically and environmentally friendly solutions are being sought. Infrared (IR) technology offers advantages in energy efficiency and environmental sustainability; however, its effectiveness in milk processing, particularly in pathogen inactivation, remains relatively unexplored. In this study, homogenized raw milk was subjected to IR treatment, and its impact on Listeria monocytogenes, Salmonella spp., and Enterobacteriaceae was assessed. Results indicate that IR treatment effectively reduces the microbial load, achieving levels of inactivation comparable to conventional pasteurization methods (around 6 Log10 CFU/mL). Moreover, the treatment maintains milk pH levels, suggesting minimal alteration to its composition. Further research is needed to explore the full extent of IR treatment on milk sanitation efficacy, deeply exploring IR technology to fully assess its applicability and integration into dairy processing practices. Despite regulatory challenges, the Wir System Milk shows promise as a cost-effective and eco-friendly alternative for raw milk treatment.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    单核细胞增生李斯特菌是一种严重的病原体,可以通过生物膜的形成加剧有害影响。抑制或减少单核细胞增生李斯特菌生物膜是在食品工业中控制单核细胞增生李斯特菌的有希望的策略。在我们之前的研究中,发现植物乳杆菌Q7产生的植物乳杆菌Q7可以抑制和减少单核细胞增生李斯特菌的生物膜,但具体机制尚不清楚。在这项研究中,通过代谢组学研究了植物乳杆菌素Q7对单核细胞增生李斯特菌生物膜的抑制和降低活性。结果表明,植物乳杆菌素Q7主要通过嘌呤代谢和甘油磷脂代谢抑制单核细胞增生李斯特菌生物膜的合成,关键的差异代谢产物包括乙酰胆碱和次黄嘌呤,丰度从5.80降至4.85。此外,植物乳杆菌素Q7通过嘌呤代谢和精氨酸生物合成减少了形成的单核细胞增生李斯特菌生物膜,主要的差异代谢产物是N-乙酰谷氨酸和D-核糖-1-磷酸,丰度从6.21下降到4.73。首次报道嘌呤代谢和氨基酸代谢是植物乳杆菌素Q7抑制和减少单核细胞增生李斯特菌生物膜的共同代谢途径,这可能是控制单核细胞增生李斯特菌生物膜的潜在靶标。提出了植物乳杆菌素Q7抑制和减少单核细胞增生李斯特菌生物膜的假定代谢途径。这些发现为控制食品加工中的单核细胞增生李斯特菌生物膜提供了新的策略。
    Listeria monocytogenes is a serious pathogen and can exacerbate harmful effects through the formation of biofilm. Inhibition of or reduction in L. monocytogenes biofilm is a promising strategy to control L. monocytogenes in the food industry. In our previous study, it was found that plantaricin Q7 produced by Lactiplantibacillus plantarum Q7 could inhibit and reduce L. monocytogenes biofilm, but the specific mechanism remains unclear. In this study, the inhibitive and reduced activity of plantaricin Q7 on L. monocytogenes biofilm was investigated by metabolomics. The results showed that plantaricin Q7 inhibited the synthesis of L. monocytogenes biofilm mainly through purine metabolism and glycerol phospholipid metabolism, and the key differential metabolites included acetylcholine and hypoxanthine with a decrease in abundance from 5.80 to 4.85. In addition, plantaricin Q7 reduced the formed L. monocytogenes biofilm by purine metabolism and arginine biosynthesis, and the main differential metabolites were N-acetylglutamate and D-ribose-1-phosphate with a decrease in abundance from 6.21 to 4.73. It was the first report that purine metabolism and amino acid metabolism were the common metabolic pathway for plantaricin Q7 to inhibit and reduce L. monocytogenes biofilm, which could be potential targets to control L. monocytogenes biofilm. A putative metabolic pathway for L. monocytogenes biofilm inhibition and reduction by plantaricin Q7 was proposed. These findings provided a novel strategy to control L. monocytogenes biofilm in food processing.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    鱼类通常在实验室中用作实验模型。常规地从这些动物收集DNA以允许鉴定它们的基因型。目前取样DNA的标准程序是切鳍,这包括麻醉个体和去除一部分尾鳍。虽然鳍片剪切可靠地为下游应用生成高质量的DNA样本,有证据表明它可以改变健康和福利,导致感染并影响鱼的行为。这又可能导致所收集数据的更大变化。在最近的一项研究中,我们采用了一种皮肤擦拭方案来从小型鱼身上收集DNA,包括斑马鱼和斑马鱼,不使用麻醉剂或锋利的工具。用人造丝尖的拭子从鱼的侧面收集粘液,然后用于DNA提取。我们随后证明了与鳍修剪相比,皮肤擦拭引起的应力轴激活和行为的变化较少。我们还发现,从擦拭过的鱼收集的数据比从切鳍的鱼收集的数据变化小,在使用这种技术后,可能允许实验组中的样本量更小,从而减少动物的使用。在这里,我们提供了详细的协议,解释了如何使用皮肤拭子从小型实验室鱼收集DNA样本。
    Fish species are commonly used as experimental models in the laboratory. DNA is routinely collected from these animals to permit identification of their genotype. The current standard procedure to sample DNA is fin clipping, which involves anaesthetising individuals and removing a portion of the caudal fin. While fin clipping reliably generates good quality DNA samples for downstream applications, there is evidence that it can alter health and welfare, and impact the fish\'s behaviour. This in turn can result in greater variation in the data collected. In a recent study we adapted a skin swabbing protocol to collect DNA from small-bodied fish, including sticklebacks and zebrafish, without the use of analgesics, anaesthetics or sharp instruments. A rayon-tipped swab was used to collect mucus from the flank of the fish, which was then used for DNA extraction. We subsequently demonstrated that compared to fin clipping, skin swabbing triggered fewer changes in stress axis activation and behaviour. We also found that gene expression and behaviour data collected from swabbed fish were less variable than similar data collected from fish that had been fin clipped. This potentially allows smaller sample sizes in experimental groups to be used after skin swabbing, thereby reducing animal use. Here we provide a detailed protocol explaining how to collect DNA samples from small laboratory fish using skin swabs.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    通过将铜金属粉末直接固定在Fe3O4@EDTA纳米复合材料上,合成了一种新型高效的含Cu(II)的介孔纳米催化体系。然后通过FT-IR对制备的Fe3O4@EDTA@Cu(II)纳米复合材料进行了表征,XRD,SEM,TEM,基于SEM的EDX和元素映射,XPS,TGA,VSM,以及BET和BJH分析。所得的Fe3O4@EDTA@Cu(II)介孔纳米复合材料对硝基芳烃的还原和一锅还原乙酰化以及在60°C的水中芳基胺的N-乙酰化表现出令人满意的催化活性。值得注意的是,使用外部磁场从反应混合物中有效地回收所应用的含Cu(II)的纳米催化剂,并且可以成功地重复使用五个循环。本研究中开发的协议在温和的反应条件方面提供了几个优点,简单的工作流,使用水作为绿色溶剂,易于回收和催化剂重复使用,使其在生态和经济上更具吸引力。
    A new and efficient Cu(II)-containing mesoporous nanocatalytic system was synthesized by direct immobilization of copper metal powder on the Fe3O4@EDTA nanocomposite. The as-prepared Fe3O4@EDTA@Cu(II) nanocomposite was then characterized by FT-IR, XRD, SEM, TEM, SEM-based EDX and elemental mapping, XPS, TGA, VSM, and also BET and BJH analyses. The resulting Fe3O4@EDTA@Cu(II) mesoporous nanocomposite exhibited satisfactory catalytic activity towards the reduction and one-pot reductive acetylation of nitroarenes and also N-acetylation of arylamines in water at 60 °C. Notably, the applied Cu(II)-containing nanocatalyst was efficiently recovered from the reaction mixture using an external magnetic field and could be reused successfully for five cycles. The protocol developed in this study offers several advantages in terms of mild reaction conditions, simple workflows, using water as a green solvent, and easy recovery and catalyst reuse, making it more ecologically and economically attractive.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    目的:基于深度学习的图像增强在超声图像处理领域具有巨大的潜力,因为它可以准确地对复杂的非线性伪影和噪声进行建模,如超声波斑点图案。然而,训练深度学习网络以获取干净且无噪声的参考图像提出了重大挑战。本研究引入了一个无监督的深度学习框架,称为散斑到散斑(S2S),设计用于抑制斑点和噪声。该框架可以在不需要干净(无斑点)参考图像的情况下完成其训练。
    方法:所提出的网络利用统计推理来相互训练两个体内图像,每个都有不同的斑点图案和噪音。然后,它推断无斑点和噪声的图像,而不需要干净的参考图像。这种方法大大减少了时间,成本,和工作专家需要投资手动注释参考图像。
    结果:实验结果表明,所提出的方法在信噪比方面优于现有技术,对比噪声比,结构相似性指数,边缘保存指数,和处理时间(快86倍)。除了这项工作中使用的图像外,它还对从超声扫描仪获得的图像进行了出色的处理。
    结论:S2S证明了在医学成像应用中采用无监督学习技术的潜力,获取地面真相参考是具有挑战性的。
    OBJECTIVE: Deep learning-based image enhancement has significant potential in the field of ultrasound image processing, as it can accurately model complicated nonlinear artifacts and noise, such as ultrasonic speckle patterns. However, training deep learning networks to acquire reference images that are clean and free of noise presents significant challenges. This study introduces an unsupervised deep learning framework, termed speckle-to-speckle (S2S), designed for speckle and noise suppression. This framework can complete its training without the need for clean (speckle-free) reference images.
    METHODS: The proposed network leverages statistical reasoning for the mutual training of two in vivo images, each with distinct speckle patterns and noise. It then infers speckle- and noise-free images without needing clean reference images. This approach significantly reduces the time, cost, and effort experts need to invest in annotating reference images manually.
    RESULTS: The experimental results demonstrated that the proposed approach outperformed existing techniques in terms of the signal-to-noise ratio, contrast-to-noise ratio, structural similarity index, edge preservation index, and processing time (up to 86 times faster). It also performed excellently on images obtained from ultrasound scanners other than the ones used in this work.
    CONCLUSIONS: S2S demonstrates the potential of employing an unsupervised learning-based technique in medical imaging applications, where acquiring a ground truth reference is challenging.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Case Reports
    背景:喙突骨折合并肩锁(AC)关节脱位是一种罕见的损伤,通常会引起明显的疼痛并限制肩关节的运动。切开复位内固定一直是传统的治疗方法。然而,关节镜技术正在成为治疗这些损伤的一种有希望的替代方法。
    方法:一名35岁女性在意外跌倒后出现右肩疼痛。影像学检查显示喙突骨折以及AC关节脱位。骨折被归类为艾尔斯IIIA型,这需要手术干预。我们的团队进行了关节镜下喙突骨折复位和内固定手术,以及使用克氏针的AC关节脱位修复。手术后六个月,患者表现出令人满意的功能结局,骨完全愈合。
    结论:本病例报告强调了关节镜下复位和固定作为喙突基底骨折一种新的治疗选择的潜力。
    BACKGROUND: A coracoid process fracture combined with an acromioclavicular (AC) joint dislocation is an uncommon injury that typically causes significant pain and limits shoulder movement. Open reduction and internal fixation have been the traditional treatment approach. However, arthroscopic techniques are emerging as a promising alternative for managing these injuries.
    METHODS: A 35-year-old woman presented with right shoulder pain following an accidental fall. Imaging studies revealed a coracoid process fracture along with an AC joint dislocation. The fracture was classified as an Eyres Type IIIA, which warranted surgical intervention. Our team performed arthroscopic coracoid fracture reduction and internal fixation surgery, as well as AC joint dislocation repair using Kirschner wires. Six months after surgery, the patient demonstrated a satisfactory functional outcome with complete bone healing.
    CONCLUSIONS: This case report highlights the potential of arthroscopic reduction and fixation as a novel treatment option for fractures of the coracoid base.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Case Reports
    背景:没有踝关节(踝关节)骨折的距骨完全脱位是一种非常罕见的损伤,患病率仅占所有脱位的0.06%,距骨损伤的发生率仅为2%,通常与感染等常见并发症有关,缺血性坏死,和创伤后关节炎。治疗通常包括清创术,reduction,踝关节的稳定,和伤口的初次或二次闭合。
    方法:我们介绍了一名40岁的南亚妇女发生事故的案例。她被紧急送往我们的医院,随后的检查发现,距骨完全脱位,距骨完全从内侧的污染伤口中暴露出来。此外,X线片证实距骨完全脱位,无伴随踝骨折。她立即被带到手术室,在麻醉下进行清创和立即复位,外固定器稳定踝关节约6周。她现在能够承受受影响的脚踝的重量,并且可以承受最小的疼痛,并且脚踝的运动范围正常。
    结论:开放性全距骨脱位而不伴随踝骨折是一种罕见的损伤。减少距骨结合完全的伤口清创可能成功地避免感染,提供早期血运重建预防缺血性坏死,并保留了正常的脚踝解剖结构。
    BACKGROUND: Total talus dislocation without ankle (malleoli) fracture is a very rare injury with prevalence of only 0.06% of all dislocations and only 2% of talar injuries, and are usually associated with common complications such as infection, avascular necrosis, and posttraumatic arthritis. The treatment usually involves debridement, reduction, stabilization of the ankle joint, and primary or secondary closure of the wound.
    METHODS: We present the case of a 40-year-old South Asian woman who was involved in an accident. She was rushed to our hospital, whereby subsequent examination revealed an open total talus dislocation with the talus being exposed in its entirety from a contaminated wound in the medial side. Furthermore, radiograph confirmed total talus dislocation without concomitant malleoli fracture. She was immediately taken to the operating theater whereby debridement and immediate reduction was performed under anesthesia, and the ankle was stabilized with external fixator for about 6 weeks. She is now able to bear weight on the affected ankle with minimal tolerable pain and has normal range of motion of the ankle.
    CONCLUSIONS: Open total talus dislocation without concomitant malleoli fracture is a rare injury. Reduction of the talus in combination with complete wound debridement potentially successfully avoids infection, provides early revascularization preventing avascular necrosis, and preserves the normal ankle anatomy.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Case Reports
    在LMIC中,与桡骨头骨折相关的肘关节后脱位的非手术治疗仍然是一种具有良好疗效的治疗选择.
    与桡骨头骨折相关的肘关节脱位是一种罕见的病变。这种病变的发生需要高能量创伤。关节和桡骨头骨折的恢复允许早期动员是良好功能结果的最佳保证。我们报告了一例肘关节后脱位与桡骨头骨折相关的病例,该病例通过闭合复位和中性前旋前固定和90°屈曲固定1周,然后进行早期动员,在12周后获得了良好的功能结果。我们回顾了肘关节脱位的不同方式,并质疑移位桡骨头骨折切开复位内固定的必要性。
    UNASSIGNED: In LMICs, the nonoperative management of posterior elbow dislocation associated with radial head fracture is still a therapeutic option with favorable outcomes.
    UNASSIGNED: Elbow dislocation associated with radial head fracture is a rare lesion. The occurrence of such a lesion requires high energy trauma. The restoration of joint and radial head fracture that allows early mobilization is the best guarantee of a good functional outcome. We report a case of posterior elbow dislocation associated with radial head fracture managed by closed reduction and 1 week cast immobilization in neutral prono-supination and 90°flexion followed by early mobilization was performed favorable functional outcome was obtained after 12 weeks. We review the different pattern of elbow dislocation and question the need of open reduction and internal fixation for displaced radial head fractures.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    背景:这项研究调查了撒哈拉以南非洲国家(SSA)儿童发育迟缓的变化。然后,它调查了这些国家减少儿童发育迟缓的因素。对于每个国家,我们区分成分效应和结构效应的贡献。
    方法:本文使用了2000年至2020年对12个撒哈拉以南非洲国家进行的人口和健康调查的数据。比较两个独立比例的z检验用于评估在此期间儿童发育迟缓和解释变量的变化。采用最近的影响函数(RIF)分解方法对每个国家一年来的发育不良变化进行分解,并确定每个变量对变化的贡献。
    结果:一年中,11个国家的儿童发育迟缓患病率显著下降。下降幅度从喀麦隆的6.8%到马里的19%不等。孩子的母亲和父亲的平均教育年份,改善饮用水源的家庭比例有助于减少儿童发育迟缓。这个结果在所有国家都有。生活水平的提高,儿童疫苗接种,产前护理服务,送到卫生保健中心,母亲教育,改善饮用水源,卫生条件的改善对组成成分的贡献最大,从而减少儿童发育迟缓。
    结论:这项研究揭示了促进儿童营养状况改善的因素,并提出了如何在落后国家加快减少营养不良的措施。
    BACKGROUND: This study examines how significant is the changes in child stunting in Sub-Saharan African countries (SSA). Then, it investigates factors that contributed to the reduction in child stunting in those countries. For each country, we distinguish the contribution of compositional effects and structural effect.
    METHODS: This paper uses data from Demographic and Health Surveys of 12 sub-Saharan African countries conducted between 2000 and 2020. The z-test to compare two independent proportions was used to assess changes in child stunting and explanatory variables over the period. Recentred influence function (RIF) decomposition method was used to decompose changes in stunting over the year in each country, and to determine the contribution of each variable to the changes.
    RESULTS: The prevalence of child stunting declines significantly in 11 countries over the year. The decline varies from 6.8% in Cameroun to 19% in Mali. The average year of education of the child\'s mother and father, and the proportion of households with access to an improved drinking water source have contributed to the reduction in child stunting. This result was found in all the countries. Improvements in living standards, child vaccination, antenatal care attendance, delivery to health care centres, maternal education, improved drinking water sources, and improved sanitation make the largest contribution to the composition component, hence reducing child stunting.
    CONCLUSIONS: This study sheds light on what has contributed to the achieved improvement in child nutritional status and suggests how to possibly accelerate the reduction in undernutrition in countries that lag.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

  • 文章类型: Journal Article
    使用有机镁的硝基芳烃还原反应的最新进展,有机锌-,本文讨论了单电子转移试剂。综述分为以下几个部分:介绍有机镁介导的还原反应有机锌和锌介导的还原反应碘催化的氧化还原环化钛(III)介导的还原环化硫介导的还原反应醇盐介导的还原反应4,4'-联吡啶介导的还原反应结论可见光驱动的还原化学反应。
    Recent advances in the development of reductive reactions of nitroarenes using organomagnesium-, organozinc-, and single electron transfer reagents is discussed within this review. The review is divided into the following sections: IntroductionOrganomagnesium-mediated reductive reactionsOrganozinc- and zinc-mediated reductive reactionsIodine-catalyzed redox cyclizationsTitanium(III)-mediated reductive cyclizationsSulfur-mediated reductive reactionsAlkoxide-mediated reductive reactions4,4\'-Bipyridine-mediated reductive reactionsVisible light-driven reductive amination reactionsElectrochemical reductive reactionsConclusion.
    导出

    更多引用

    收藏

    翻译标题摘要

    我要上传

       PDF(Pubmed)

公众号