Experimental

实验性
  • 文章类型: Journal Article
    共享治理是一个在护理领域越来越受欢迎的概念。这是一个框架,使护士在临床决策中发挥更大作用。这种方法承认护士拥有的专业知识和知识,并允许他们成为决策过程的积极参与者。这是赋予护士权力并确保为患者提供最佳护理的一种方式。通过促进共享治理,护士能够与其他医疗保健专业人员协同工作,并提供基于证据和以患者为中心的高质量护理。本文提供了在实证研究中收集的数据,以调查实施共享治理模式对沙特阿拉伯三级医院护士对专业治理的看法的影响,方法是从最低层次测量共享治理水平,传统的治理层面(仅限管理和行政),到最高水平,自治级别(仅限员工),通过护理专业治理的六个维度,包括人员,信息,资源,参与,实践,和目标。这项研究在2022年7月至2023年2月之间的8个月内进行,随机抽取了200名临床护士,他们在研究干预前后完成了结构化问卷,作为准研究的一部分。干预措施包括设计和实施共享治理模型,并为护士参与者提供临床共享的治理培训。前测-后测实验组表明,共享治理的水平有所改善(共享治理水平-主要是管理/行政与一些工作人员的投入),这表示在沙特阿拉伯三级医院工作的护士中护理专业人员治理培训的有效性。本研究中使用的数据可以被未来的研究用于基准测试目的。
    Shared governance is a concept that has been gaining popularity in the nursing field. It is a framework that allows nurses to have a greater role in clinical decision-making. This approach recognizes the expertise and knowledge that nurses possess and allows them to be active participants in the decision-making process. It is a way to empower nurses and to ensure that the best possible care is being provided to patients. By promoting shared governance, nurses are able to work collaboratively with other healthcare professionals and provide high-quality care that is evidence-based and patient-centered. This article presents data that was collected in an empirical study to investigate the impact of implementing a shared governance model on the perceptions of professional governance among nurses working in a tertiary hospital in Saudi Arabia by measuring the level of shared governance from the lowest level, the traditional governance level (management and administration only), to the highest level, the self-governance level (staff only), through six dimensions of nursing professional governance, including personnel, information, resources, participation, practice, and goals. The study was conducted over 8 months between July 2022 to February 2023 with the involvement of a random sample of 200 clinical nurses who completed a structured questionnaire before and after the study interventions as part of quasi-research. The interventions included designing and implementing a shared governance model, and providing a shared governance training to clinical to nurse participants. The pretest-posttest experimental group showed that there were improvements in the level of shared governance (shared governance level - primarily management/administration with some staff input), which denotes the effectiveness of nursing professionals governance training among nurses working in a tertiary hospital in Saudi Arabia. The data used in this study can be utilized by future studies for benchmarking purposes.
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  • 文章类型: Systematic Review
    去个性化-去现实障碍(DDD)的特征是与自己和/或周围环境分离的痛苦经历,可能是由于情感的改变,认知,和生理功能。本系统综述旨在综合当前与DDD潜在机制相关的实验证据,为了评估现有的理论模型,并为未来的研究和理论发展提供信息。如果他们在DDD样本中测试了明确的假设,通过对至少一个自变量的实验操作,除了行为,主观,神经学,情感和/或生理因变量。一些证据表明,对厌恶的图像和声音的主观反应减弱,当观看厌恶的图像时,神经回路中与情绪调节相关的过度激活出现了,证实DDD的神经生物学模型。关于面部表情的行为和自主神经反应存在不一致,情感记忆,和自我参照处理。常见的困惑包括小样本量,药物,和合并症。DDD中似乎存在情感反应和调节的变化;然而,需要采用更严格的研究设计的进一步研究,为这些可能的机制提供更有力的证据。
    Depersonalisation-derealisation disorder (DDD) is characterised by distressing experiences of separation from oneself and/or one\'s surroundings, potentially resulting from alterations in affective, cognitive, and physiological functions. This systematic review aimed to synthesise current experimental evidence of relevance to proposed mechanisms underlying DDD, to appraise existing theoretical models, and to inform future research and theoretical developments. Studies were included if they tested explicit hypotheses in DDD samples, with experimental manipulations of at least one independent variable, alongside behavioural, subjective, neurological, affective and/or physiological dependent variables. Some evidence for diminished subjective responsivity to aversive images and sounds, and hyperactivation in neurocircuits associated with emotional regulation when viewing aversive images emerged, corroborating neurobiological models of DDD. Inconsistencies were present regarding behavioural and autonomic responsivity to facial expressions, emotional memory, and self-referential processing. Common confounds included small sample sizes, medication, and comorbidities. Alterations in affective reactivity and regulation appear to be present in DDD; however, further research employing more rigorous research designs is required to provide stronger evidence for these possible mechanisms.
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  • 文章类型: Journal Article
    目标:精神病患者延迟获得推荐治疗,导致不良的医疗结果和复发风险增加。改善寻求帮助和接受帮助的方法可以减少未经治疗的精神病(DUP)的持续时间。这项研究考察了依恋风格在精神病中寻求帮助和接受帮助中的作用。
    方法:我们使用了一个实验设计来测试依恋意象启动对寻求帮助和接受帮助的意图的影响,在一个自我报告的精神病样本中。独立变量是附件图像条件(安全与回避)和时间(前与post-prime).因变量是状态偏执,寻求帮助的意图和接受帮助的意图。
    方法:我们使用在线研究平台招募精神病患者(n=61)。参与者被随机分配到安全或回避的依恋启动条件。所有完成的国家偏执狂措施,寻求帮助,和帮助接受,在启动之前和之后。
    结果:与回避条件相比,安全的依恋意象导致偏执狂减少,寻求帮助和接受意愿增加,所有与大的效果大小。
    结论:这是第一项使用实验设计来评估依恋风格在临床样本中寻求帮助和接受帮助中的作用的研究。依恋风格与有助于DUP的行为意图有因果关系。临床医生应该评估依恋和寻求帮助和接受度,在配方中突出这些,并优先考虑治疗计划。加强寻求帮助和接受的干预措施可以改善获得推荐治疗的机会并减少DUP。
    OBJECTIVE: People with psychosis delay accessing recommended treatments, resulting in poor healthcare outcomes and increased risk of relapse. Means of improving help-seeking and help-acceptance could reduce duration of untreated psychosis (DUP). This study examined the role of attachment style in help-seeking and help-acceptance in psychosis.
    METHODS: We used an experimental design to test the effect of attachment imagery priming on help-seeking and help-acceptance intentions, in a sample with self-reported psychosis. The independent variables were attachment imagery condition (secure vs. avoidant) and time (pre- vs. post-prime). The dependent variables were state paranoia, help-seeking intentions and help-acceptance intentions.
    METHODS: We used an online research platform to recruit people with psychosis (n = 61). Participants were randomly allocated to the secure or avoidant attachment priming condition. All completed measures of state paranoia, help-seeking, and help-acceptance, before and after priming.
    RESULTS: In comparison with the avoidant condition, secure attachment imagery resulted in reduced paranoia and increased help-seeking and acceptance intentions, all with large effect sizes.
    CONCLUSIONS: This is the first study to use an experimental design to assess the role of attachment style in help-seeking and help-acceptance in a clinical sample. Attachment style is causally linked to behavioural intentions that contribute to DUP. Clinicians should assess attachment and help-seeking and acceptance, highlight these in formulation, and prioritise in treatment planning. Interventions that enhance help-seeking and acceptance could improve access to recommended treatments and reduce DUP.
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  • 文章类型: Journal Article
    秘密密钥交换依赖于相关信号的创建,作为安全通信的原始资源。热态表现出HanburyBrown和Twiss的相关性,这为产生这种信号提供了一个有希望的途径。在本文中,我们介绍了微波区域中中央广播热态量子密钥分配(QKD)协议的实验实现。我们的目标是展示一种简单的QKD方法,利用现成的广播设备。与传统的热态QKD方法不同,我们利用位移的热状态。这些状态使我们能够在爱丽丝之间共享热源的输出,鲍勃,和夏娃通过两个波导通道和自由空间。通过测量并转换为位串,我们的协议产生密钥就绪位串,而不需要专门的设备。通过利用热广播中的固有噪声,我们的设置有助于所有相关方恢复不同的位串。
    Secret key exchange relies on the creation of correlated signals, serving as the raw resource for secure communication. Thermal states exhibit Hanbury Brown and Twiss correlations, which offer a promising avenue for generating such signals. In this paper, we present an experimental implementation of a central broadcast thermal-state quantum key distribution (QKD) protocol in the microwave region. Our objective is to showcase a straightforward method of QKD utilizing readily available broadcasting equipment. Unlike conventional approaches to thermal-state QKD, we leverage displaced thermal states. These states enable us to share the output of a thermal source among Alice, Bob, and Eve via both waveguide channels and free space. Through measurement and conversion into bit strings, our protocol produces key-ready bit strings without the need for specialized equipment. By harnessing the inherent noise in thermal broadcasts, our setup facilitates the recovery of distinct bit strings by all parties involved.
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  • 文章类型: Journal Article
    猪链球菌是一种猪细菌病原体,主要导致断奶仔猪以关节肿胀为特征的疾病,关节炎,败血症,脑膜炎,突然死亡。静脉注射,肌肉内,腹膜内,开发了鼻内感染模型来研究疫苗和各种疗法的细菌致病性和功效。选择合适的感染模型是任何研究的关键步骤,因为它可能会影响研究结果。在这里,我们描述了一种使用腹膜内途径感染猪链球菌的断奶仔猪的方法,一致,和可重复的动物模型,以评估疫苗对全身性细菌感染的保护作用。
    Streptococcus suis is a swine bacterial pathogen that predominantly causes disease in weaned piglets characterized by swelling of joints, arthritis, septicemia, meningitis, and sudden death. Intravenous, intramuscular, intraperitoneal, and intranasal infection models were developed to study the bacterial pathogenicity and efficacy of vaccines and various therapeutics. The selection of the appropriate infection model is a critical step in any study, as it may impact the outcomes of the study. Here we describe a method for infecting weaned piglets with S. suis using intraperitoneal route as a reliable, consistent, and reproducible animal model to evaluate vaccine protection against systemic bacterial infection.
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  • 文章类型: Journal Article
    原则上,在执行所有制造过程之后,在产品中出现一组残余应力,这些残余应力在给定的制造过程中具有特定的分布。必须去除残余应力以实现所需的尺寸精度和质量。在制造过程之后对工件执行的应力消除过程中,我们可以参考热和振动应力消除(VSR)。两种方法都执行相同的功能,因为它们将零件的一部分或全部输入到塑性阶段,导致断裂的残余应力被释放与局部塑性变形。过程如下:由热或振动载荷引起的应力被添加到残余应力中,并超过屈服应力。这项研究,专注于VSR,目的是评估VSR方法主要参数的效果,包括负载幅度或量,负载应用频率,和周期数。该问题的总体趋势是,对具有残余应力的工件进行VSR工艺,并评估了上述参数对降低其残余应力的影响。
    In principle, after all manufacturing processes are performed, a set of residual stresses occur in the product that have their particular distribution given the manufacturing process performed. The residual stresses must be removed to achieve the desired dimensional accuracy and quality. Among stress-relieving processes performed for a piece following the manufacturing process, we can refer to thermal and vibratory stress relief (VSR). Both methods perform the same function as they enter a part or all of a piece into the plastic phase, causing a fracture of residual stresses to be released with local plastic deformations. The process is as follows: The stress induced by thermal or vibratory loads is added to the residual stresses and exceeds the yield stress. This research, which is focused on VSR, aims to evaluate the effect of the main parameters of the VSR method, including load amplitude or amount, load application frequency, and cycle numbers. The general trend of the problem is that the VSR process is performed for a piece with residual stress, and the effect of the abovementioned parameters on reducing its residual stresses is evaluated.
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  • 文章类型: Journal Article
    背景:数字医疗服务的兴起,特别是数字医生咨询,创造了医疗保健选择的新范式。虽然患者传统上依靠数字评论或转诊来选择医疗保健提供者,数字环境往往缺乏这样的信息,导致对个人资料图片等视觉线索的依赖。先前的研究已经探讨了身体吸引力在一般服务环境中的影响,但在数字医疗保健的背景下却很少。
    目的:本研究旨在通过调查在数字咨询环境中医疗保健提供者的身体吸引力如何影响患者的偏好来填补研究空白。我们还研究了疾病严重程度和医疗保健提供者资格信息可用性的调节作用。该研究使用信号理论和性归因偏见框架来理解这些动态。
    方法:进行了三项实验研究,以检查医疗保健提供者的身体吸引力和性别对患者在数字咨询中的偏好的影响。研究1(n=282)使用2×2的受试者间因子设计,医生操纵吸引力和性别。研究2(n=158)侧重于女医生和操纵的疾病严重程度和参与者的性别。研究3(n=150)重复了研究2,但增加了有关提供者能力的信息。
    结果:这项研究发现,患者倾向于选择有吸引力的异性医生,但不太可能选择有吸引力的同性医生。此外,我们的研究表明,当疾病严重程度高时,这种影响更加突出。此外,在高疾病严重程度和低疾病严重程度两种情况下,当服务提供者的资格信息存在时,性别刻板印象的影响都会减轻.
    结论:这项研究有助于有关医疗信息系统研究的文献,并阐明了应在数字医生咨询平台上显示哪些信息。为了抵消基于刻板印象的吸引力偏见,医疗保健平台应考虑提供全面的资格信息以及个人资料图片。
    BACKGROUND: The rise of digital health services, particularly digital doctor consultations, has created a new paradigm in health care choice. While patients traditionally rely on digital reviews or referrals to select health care providers, the digital context often lacks such information, leading to reliance on visual cues such as profile pictures. Previous research has explored the impact of physical attractiveness in general service settings but is scant in the context of digital health care.
    OBJECTIVE: This study aims to fill the research gap by investigating how a health care provider\'s physical attractiveness influences patient preferences in a digital consultation setting. We also examine the moderating effects of disease severity and the availability of information on health care providers\' qualifications. The study uses signal theory and the sexual attribution bias framework to understand these dynamics.
    METHODS: Three experimental studies were conducted to examine the influence of health care providers\' physical attractiveness and gender on patient preferences in digital consultations. Study 1 (n=282) used a 2×2 between-subjects factorial design, manipulating doctor attractiveness and gender. Study 2 (n=158) focused on women doctors and manipulated disease severity and participant gender. Study 3 (n=150) replicated study 2 but added information about the providers\' abilities.
    RESULTS: This research found that patients tend to choose attractive doctors of the opposite gender but are less likely to choose attractive doctors of the same gender. In addition, our studies revealed that such an effect is more prominent when the disease severity is high. Furthermore, the influence of gender stereotypes is mitigated in both the high and low disease severity conditions when service providers\' qualification information is present.
    CONCLUSIONS: This research contributes to the literature on medical information systems research and sheds light on what information should be displayed on digital doctor consultation platforms. To counteract stereotype-based attractiveness biases, health care platforms should consider providing comprehensive qualification information alongside profile pictures.
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  • 文章类型: Journal Article
    基因发现揭示了新的生物学,扩展了标记辅助选择的效用,并实现靶向诱变。尽管如此,这样的发现可能需要十多年的时间。我们提出了一个总体战略,“敏捷遗传学,\"使用嵌套,结构化种群,以克服基因分辨率的常见限制。对现实遗传架构的大量模拟工作表明,在>5000个样本的人口规模下,单基因分辨率可以实现使用批量分离池。在这个尺度上,阅读深度和技术复制成为分辨率的主要驱动因素。解决覆盖问题的新兴富集方法即将出现;我们描述了一种可能性-迭代深度测序(ID-seq)。此外,在实验人群中基于图形的pangenomics将继续最大限度地提高准确性和改善解释。基于这种农艺尺度与分子和生物信息学创新的合并,我们预言了一个快速发现基因的新时代.
    Gene discovery reveals new biology, expands the utility of marker-assisted selection, and enables targeted mutagenesis. Still, such discoveries can take over a decade. We present a general strategy, \"Agile Genetics,\" that uses nested, structured populations to overcome common limits on gene resolution. Extensive simulation work on realistic genetic architectures shows that, at population sizes of >5000 samples, single gene-resolution can be achieved using bulk segregant pools. At this scale, read depth and technical replication become major drivers of resolution. Emerging enrichment methods to address coverage are on the horizon; we describe one possibility - iterative depth sequencing (ID-seq). In addition, graph-based pangenomics in experimental populations will continue to maximize accuracy and improve interpretation. Based on this merger of agronomic scale with molecular and bioinformatic innovation, we predict a new age of rapid gene discovery.
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  • 文章类型: Journal Article
    多发性硬化症(MS)是一种自身免疫性疾病,其特征是中枢神经系统的髓磷脂变性和炎症。反式花青酸钠(TSC),一种新的合成类胡萝卜素化合物,具有抗氧化剂,抗炎和神经保护作用。本研究旨在评估TSC对实验性自身免疫性脑脊髓炎(EAE)发展的保护作用,MS的既定模型将雌性BALB/C57小鼠分为不同的组,包括控制,EAE,车辆,TSC治疗(25、50和100mg/kg,通过管饲法给药)+EAE,醋酸甲基强的松+EAE,和TSC治疗(100mg/kg,通过管饲法给药28天)组。EAE使用MOG35-55,完全弗氏佐剂,和百日咳毒素.在小鼠脊髓组织中,采用分光光度法测定氧化标志物(GSH和MDA),并进行组织学评价.免疫印迹法检测细胞凋亡途径蛋白(PINK1和PARKIN)和炎症因子(IL-1β和TNF-α)。诱导后21天,EAE小鼠表现出体重减轻,并且瘫痪评分在第13天增加,但在第16天TSC(100mg/kg)给药后恢复。此外,TSC(50和100mg/kg)逆转了EAE小鼠脊髓组织中MDA和GSH水平的改变。TSC(100mg/kg)也减少了小胶质细胞增生,脱髓鞘,炎症标志物IL-1β和TNF-α的水平。值得注意的是,TSC(100mg/kg)通过降低PINK1和Parkin蛋白水平来调节线粒体自噬途径。这些发现表明,TSC通过抗炎保护脊髓组织免受EAE诱导的MS,抗氧化剂,和抗线粒体自噬机制。
    Multiple sclerosis (MS) is an autoimmune disorder characterized by the degeneration of myelin and inflammation in the central nervous system. Trans sodium crocetinate (TSC), a novel synthetic carotenoid compound, possesses antioxidant, anti-inflammatory and neuroprotective effects. This study aimed to evaluate the protective effects of TSC against the development of experimental autoimmune encephalomyelitis (EAE), a well-established model for MS. Female BALB/C57 mice were divided into different groups, including control, EAE, vehicle, TSC-treated (25, 50, and 100 mg/kg, administered via gavage) + EAE, methyl prednisone acetate + EAE, and TSC-treated (100 mg/kg, administered via gavage for 28 days) groups. EAE was induced using MOG35-55, complete Freund\'s adjuvant, and pertussis toxin. In the mice spinal cord tissues, the oxidative markers (GSH and MDA) were measured using spectrophotometry and histological evaluation was performed. Mitophagic pathway proteins (PINK1and PARKIN) and inflammatory factors (IL-1β and TNF-α) were evaluated by western blot. Following 21 days post-induction, EAE mice exhibited weight loss, and the paralysis scores increased on day 13 but recovered after TSC (100 mg/kg) administration on day 16. Furthermore, TSC (50 and 100 mg/kg) reversed the altered levels of MDA and GSH in the spinal cord tissue of EAE mice. TSC (100 mg/kg) also decreased microgliosis, demyelination, and the levels of inflammatory markers IL-1β and TNF-α. Notably, TSC (100 mg/kg) modulated the mitophagy pathway by reducing PINK1 and Parkin protein levels. These findings demonstrate that TSC protects spinal cord tissue against EAE-induced MS through anti-inflammatory, antioxidant, and anti-mitophagy mechanisms.
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  • 文章类型: Journal Article
    关于快速眼动睡眠(REMS)在处理情绪中的重要性的证据正在积累。本系统综述的重点是实验性REMS剥夺(REMSD)的结果,这是REMSD动物模型和人体研究中最常见的方法。这篇综述显示,应用的REMSD方法存在很大差异。与人类研究相比,动物模型使用了更长的剥夺方案,主要报道了一夜后的急性剥夺效应。对动物模型的研究表明,REMSD引起攻击行为,增加疼痛敏感性,减少性行为,以及恐惧记忆的整合。动物模型还显示,在关键发育时期的REMSD会对情感相关行为产生持久的影响。少数人类研究显示疼痛敏感性增加,并表明REMSD后情感记忆的巩固更强。由于药物干预(如选择性5-羟色胺再摄取抑制剂[SSRIs])可能会长期抑制REMS,关于人类慢性REMS抑制的影响和机制的知识存在明显差距。
    Evidence on the importance of rapid-eye-movement sleep (REMS) in processing emotions is accumulating. The focus of this systematic review is the outcomes of experimental REMS deprivation (REMSD), which is the most common method in animal models and human studies on REMSD. This review revealed that variations in the applied REMSD methods were substantial. Animal models used longer deprivation protocols compared with studies in humans, which mostly reported acute deprivation effects after one night. Studies on animal models showed that REMSD causes aggressive behavior, increased pain sensitivity, reduced sexual behavior, and compromised consolidation of fear memories. Animal models also revealed that REMSD during critical developmental periods elicits lasting consequences on affective-related behavior. The few human studies revealed increases in pain sensitivity and suggest stronger consolidation of emotional memories after REMSD. As pharmacological interventions (such as selective serotonin reuptake inhibitors [SSRIs]) may suppress REMS for long periods, there is a clear gap in knowledge regarding the effects and mechanisms of chronic REMS suppression in humans.
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