PubMed Journals Articles About "Budget Priced Chillers Constant Cooling" RSS

00:13 EDT 17th March 2018 | BioPortfolio

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Showing "Budget Priced Chillers Constant Cooling" PubMed Articles 1–25 of 2,000+

Effect of two cooling protocols on the post-thaw characteristics of Iberian ibex sperms.

The rate at which lethal intracellular ice forms during sperm cryopreservation is highly dependent on the cooling protocol. The present work compares two cooling protocols for use with Iberian ibex (Capra pyrenaica) sperm by assessing the effects on the motility, viability, and size of frozen-thawed sperm cells. Ejaculates, obtained from six adult ibex males via transrectal, ultrasound-guided massage of the accessory sex glands plus electroejaculation if necessary, were cooled via either 1) Protocol 1 (dece...

Heating and Cooling Rates With an Esophageal Heat Exchange System.

The Esophageal Cooling Device circulates warm or cool water through an esophageal heat exchanger, but warming and cooling efficacy in patients remains unknown. We therefore determined heat exchange rates during warming and cooling.

3D Sisyphus Cooling of Trapped Ions.

Using a laser polarization gradient, we realize 3D Sisyphus cooling of ^{171}Yb^{+} ions confined in and near the Lamb-Dicke regime in a linear Paul trap. The cooling rate and final mean motional energy of a single ion are characterized as a function of laser intensity and compared to semiclassical and quantum simulations. Sisyphus cooling is also applied to a linear string of four ions to obtain a mean energy of 1-3 quanta for all vibrational modes, an approximately order of magnitude reduction below Doppl...

Therapeutic hypothermia in mild neonatal encephalopathy: a national survey of practice in the UK.

Although major cooling trials (and subsequent guidelines) excluded babies with mild encephalopathy, anecdotal evidence suggests that cooling is often offered to these infants. We report a national survey on current cooling practices for babies with mild encephalopathy in the UK. From 74 neonatal units contacted, 68 were cooling centres. We received 54 responses (79%) and included 48 (five excluded due to incomplete data and one found later not to offer cooling). Of these, 36 centres (75%) offered cooling to...

The effects of local forearm muscle cooling on motor unit properties.

Muscle cooling impairs maximal force. Using needle electromyography (EMG) to assess motor unit properties during muscle cooling, is limited and equivocal. Therefore, we aimed to determine the impact of local muscle cooling on motor unit firing properties using surface EMG decomposition.

Effectiveness of Ice-Sheet Cooling Following Exertional Hyperthermia.

The procedure of wrapping a heat casualty in ice-water soaked bed sheets to reduce core temperature has received little investigation, despite the practice and recommendation for its use in some military settings. Thus, the purpose of this study was to investigate the cooling efficacy of ice-sheet cooling (ISC) following exertional hyperthermia.

Comfort, Energy Efficiency and Adoption of Personal Cooling Systems in Warm Environments: A Field Experimental Study.

It is well known that personal cooling improves thermal comfort and save energy. This study aims to: (1) compare different personal cooling systems and (2) understand what influences users' willingness to adopt them. A series of experiments on several types of personal cooling systems, which included physical measurements, questionnaires and feedback, was conducted in a real office environment. The obtained results showed that personal cooling improved comfort of participants in warm environments. Then an i...

Cooling relief of acute and chronic itch requires TRPM8 channels and neurons.

Cooling or the application of mentholated liniments to the skin has been used to treat itch for centuries, yet remarkably little is known of how counter-stimuli such as these induce itch relief. Indeed, there is no clear consensus in the scientific literature as to whether or not cooling does in fact block the transduction of itch signals or if it is simply a placebo effect. This gap in our understanding led us to hypothesize that cooling is antipruritic and, like cooling analgesia, requires function of the...

Ground-state cooling of a mechanical oscillator in a hybrid optomechanical system including an atomic ensemble.

We investigate dynamical properties and the ground-state cooling of a mechanical oscillator in an optomechanical system coupling with an atomic ensemble. In this hybrid optomechanical system, an atomic ensemble which consists of two-level atoms couples with the cavity field. Here we consider the case where the atomic ensemble is in higher excitation. Studies show that the atom-field coupling strength can obviously influence the cooling process, and we can achieve the ground-state cooling of the mechanical o...

Enhancing Sideband Cooling by Feedback-Controlled Light.

We realize a phase-sensitive closed-loop control scheme to engineer the fluctuations of the pump field which drives an optomechanical system and show that the corresponding cooling dynamics can be significantly improved. In particular, operating in the counterintuitive "antisquashing" regime of positive feedback and increased field fluctuations, sideband cooling of a nanomechanical membrane within an optical cavity can be improved by 7.5 dB with respect to the case without feedback. Close to the quantum re...

Mass selective laser cooling of (229)Th(3+) in a multisectional linear Paul trap loaded with a mixture of thorium isotopes.

We consider an experiment on trapping and laser cooling of (229)Th(3+) ions in a linear Paul trap in the presence of undesirable impurities such as ions of the radioactive isotope (228)Th(3+). We suggest a method of separating these impurities by means of selective laser cooling utilizing the isotope shift of cooling transitions in (229)Th(3+) and (228)Th(3+) ions. According to our estimation, the isotope shift is equal to 3.4 GHZ and makes laser separation of these isotopes possible.

Strong, sudden cooling alleviates the inflammatory responses in heat-stressed dairy cows based on iTRAQ proteomic analysis.

This study was designed to investigate the effects of sudden cooling on the physiological responses of 12 heat-stressed Holstein dairy cows using an isobaric tags for relative and absolute quantification (iTRAQ) labeling approach. Plasma samples were collected from these cows during heat stress (HS), and after strong, sudden cooling in the summer (16 days later). We compared plasma proteomic data before and after sudden cooling to identify the differentially abundant proteins. The results showed that sudde...

The Henry's constant of monochloramine.

Monochloramine is a secondary disinfectant used in drinking water and is also formed in chlorinated wastewater. While known to hydrolyze over time and react with dissolved organic matter, its partitioning between the aqueous and gas phase has not been extensively studied. Preliminary experiments demonstrated that monochloramine concentrations in solutions open to the atmosphere or actively aerated decreased more rapidly than in sealed solutions, indicating significant losses to the atmosphere. For example, ...

Cooling the lower abdomen to reduce postpartum blood loss: A randomized controlled trial.

Cooling the lower abdomen is one of the Japanese traditional non-pharmacological prophylactic managements for postpartum hemorrhage. This study aimed to evaluate the effectiveness of cooling the lower abdomen in reducing postpartum blood loss compared with no intervention. In both cases, women delivered vaginally without prophylactic oxytocin in the third stage of labor.

Management of Chemotherapy-Induced Alopecia With Scalp Cooling.

Chemotherapy-induced alopecia is a common and distressing adverse effect of many types of chemotherapy. Scalp cooling has been used since the 1970s for prevention of chemotherapy-induced alopecia; however, most data regarding this treatment modality are retrospective in nature, and use in the United States has been limited by safety concerns, specifically the potential for scalp metastases. Two prospective studies of scalp-cooling systems performed in the United States were published within the last year an...

Ultrafast giant magnetic cooling effect in ferromagnetic Co/Pt multilayers.

The magnetic cooling effect originates from a large change in entropy by the forced magnetization alignment, which has long been considered to be utilized as an alternative environment-friendly cooling technology compared to conventional refrigeration. However, an ultimate timescale of the magnetic cooling effect has never been studied yet. Here, we report that a giant magnetic cooling (up to 200 K) phenomenon exists in the Co/Pt nano-multilayers on a femtosecond timescale during the photoinduced demagnet...

Improvement of a Simple and Cost-Effective Passive Cooling Rate-Controlled Device for Cell/Tissue Cryopreservation.

The currently used commercial cooling-rate control device is the liquid nitrogen controlled rate freezer (LNF), which has some shortcomings such as high cost, high liquid nitrogen consumption, and potential operational risks in quality control. Based on thermophysical properties of new materials, we improved, manufactured, and optimized a reliable yet simple device named the "passive cooling rate-controlled device (PCD)" with real-time temperature tracing. In this study, using the improved PCD we cryopreser...

Feasibility Study of a Novel High-Flow Cold Air Cooling Protocol of the Porcine Brain Using MRI Temperature Mapping.

Early, prehospital cooling seeks to reduce and control the body temperature as early as possible to protect the brain and improve patient outcome in cardiac arrest, stroke, and traumatic brain injury. In this study, we investigate the feasibility of localized cooling of the porcine brain by using a novel high-flow cold air protocol, which utilizes the close proximity between the nasal cavity and the brain. Five adult pigs were anesthetized and temperature change was mapped before, during, and after cooling ...

Physical characteristics cannot be used to predict cooling time using cold-water immersion as a treatment for exertional hyperthermia.

We examined if physical characteristics could be used to predict cooling time during cold water immersion (CWI, 2°C) following exertional hyperthermia (rectal temperature ≥39.5°C) in a physically heterogeneous group of men and women (n=62). Lean body mass was the only significant predictor of cooling time following CWI (R2=0.137; P

Cutaneous Vascular Responses of the Hands and Feet to Cooling, Rewarming, and Hypoxia in Humans.

This study investigated skin vasomotor responses in the fingers and toes during cooling and rewarming with and without normobaric hypoxia.

Consequences of a changing US strategy in the global HIV investment landscape.

The global fight against HIV/AIDS in Africa has long been a focus of US foreign policy, but this could change if the federal budget for 2018 proposed by the US Office of Management and Budget is adopted. We aim to inform public and Congressional debate around this issue by evaluating the historical and potential future impact of US investment in the African HIV response.

Three-Dimensional Printed Thermal Regulation Textiles.

Space cooling is a predominant part of energy consumption in people's daily life. Although cooling the whole building is an effective way to provide personal comfort in hot weather, it is energy-consuming and high-cost. Personal cooling technology, being able to provide personal thermal comfort by directing local heat to the thermally regulated environment, has been regarded as one of the most promising technologies for cooling energy and cost savings. Here, we demonstrate a personal thermal regulated texti...

Persistent hyperglycemia in a neonate: Is it a complication of therapeutic hypothermia?

Özdemir H, Memişoğlu A, Alp-Unkar Z, Arcagök B, Bilgen H, Turan S, Özek E. Persistent hyperglycemia in a neonate: Is it a complication of therapeutic hypothermia? Turk J Pediatr 2017; 59: 193-196. The aim of this report is to present a newborn with persistent hyperglycemia requiring insulin therapy as a possible complication of therapeutic hypothermia. A term appropriate for gestational age (AGA) female infant, was born by emergency cesarean section due to abruption of placenta and was resuscitated and...

Utilization and budget impact of tolvaptan in the inpatient setting among patients with heart failure and hyponatremia.

Assess characteristics of patients with heart failure (HF) and hyponatremia (HN) using tolvaptan, a selective vasopressin V2-receptor antagonist, for sodium correction, and estimate the budget impact of tolvaptan use in a hospital.

Resource utilization in lung cancer diagnostic procedures: Current use and budget consequences.

The main objective of this study is to determine the current use of lung cancer diagnostic procedures in two large hospitals in the Netherlands, to explore deviations in guideline adherence between the hospitals, and to estimate the budget impact of the diagnostic work-up as well as the over- and underutilization.

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