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https://www.readbyqxmd.com/read/30502660/comprehensive-study-on-the-technical-aspects-of-sampling-transporting-and-measuring-radon-in-water
#1
Viktor Jobbágy, Heiko Stroh, Gerd Marissens, Mikael Hult
The European Commission's Joint Research Centre organizes proficiency tests (PT) on radon-in-water measurements. In order to optimize sampling, transport and measurement methods many tests and small scale proficiency tests have been performed. The waters from natural springs, wells were sampled on-site in glass bottles then transported cooled to the JRC and collaborating laboratories. For the material characterization standard measurement methods based on gamma-ray spectrometry, emanometry and liquid scintillation counting were used...
November 28, 2018: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/30500047/self-complementary-hydrogen-bond-interactions-of-guanosine-a-hub-for-constructing-supra-amphiphilic-polymers-with-controlled-molecular-structure-and-aggregate-morphology
#2
Qian Xiao, Fei Song, Wu-Cheng Nie, Xiu-Li Wang, Yu-Zhong Wang
A supra-amphiphilic polymer (SAP) with controlled molecular structures is constructed, in this work, via self-complementary hydrogen bonding of guanosine groups between a hydrophilic block, poly(N-isopropylacrylamide), and a hydrophobic block, poly(ε-caprolactone). By simply changing the mixing ratio of the guanosine-capped hydrophilic and hydrophobic blocks, a series of SAPs with tailored nanostructures are constructed, which can further self-assemble into different nano-aggregates in solution, including spheres, vesicles and large vesicle micelles...
November 30, 2018: Soft Matter
https://www.readbyqxmd.com/read/30472620/colloidal-properties-of-protein-complexes-formed-in-%C3%AE-casein-concentrate-solutions-as-influenced-by-heating-and-cooling-in-the-presence-of-different-solutes
#3
Shane V Crowley, Alan L Kelly, James A O'Mahony, John A Lucey
Monomeric bovine β-casein self-associates into micelles under appropriate conditions of protein concentration, serum composition and temperature. The present study investigated self-association characteristics of a β-casein concentrate (BCC) prepared from milk at pilot-scale using membrane filtration. The BCC had a casein:whey protein ratio of 77:23, with ∼95% of casein consisting of β-casein, and the remainder being mostly κ-CN. BCC was reconstituted to 1.2% protein (a typical level in infant formula) in various liquid media at pH 6...
October 28, 2018: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/30444691/clinical-and-histological-study-on-direct-pulp-capping-with-co-2-laser-irradiation-in-human-teeth
#4
M Suzuki, C Kato, S Kawashima, K Shinkai
The study aimed to histologically evaluate wound healing of exposed human pulp on direct pulp capping using super-pulsed CO2 laser preirradiation. In this single-blind clinical trial, 28 third molar teeth of 17 volunteers were randomly capped with either CO2 laser irradiation (n=14) or Dycal (calcium hydroxide cement; n=14) and restored using resin composite. The laser was operated in super-pulsed mode (pulse duration, 0.2 ms; interval, 5.8 ms; 0.003 J/pulse). The irradiation conditions were a power output of 0...
November 16, 2018: Operative Dentistry
https://www.readbyqxmd.com/read/30383138/evaluation-of-prevention-interventions-for-taxane-induced-dermatologic-adverse-events-a-systematic-review
#5
Dustin H Marks, Azam Qureshi, Adam Friedman
Importance: Chemotherapy-induced alopecia as well as nail and cutaneous changes occur in up to 89% of patients receiving taxane-based chemotherapy and are associated with cosmetic concerns, psychosocial distress, and overall morbidity. Objective: To review the efficacy and safety of interventions to prevent taxane-induced dermatologic adverse events. Evidence Review: PubMed and Scopus databases were systematically reviewed for studies published in the English language from January 1, 1980, to August 13, 2018...
October 31, 2018: JAMA Dermatology
https://www.readbyqxmd.com/read/30343572/conformation-specific-spectroscopy-of-asparagine-containing-peptides-influence-of-single-and-adjacent-asn-residues-on-inherent-conformational-preferences
#6
Karl N Blodgett, Joshua L Fischer, Jaeyeon Lee, Soo Hyuk Choi, Timothy S Zwier
The infrared and ultraviolet spectra of a series of capped asparagine-containing peptides, Ac-Asn-NHBn, Ac-Ala-Asn-NHBn, and Ac-Asn-Asn-NHBn, have been recorded under jet-cooled conditions in the gas phase in order to probe the influence of the Asn residue, with its -CH2 -C(═O)-NH2 side chain, on the local conformational preferences of a peptide backbone. The double-resonance methods of resonant ion-dip infrared (RIDIR) spectroscopy and infrared-ultraviolet hole-burning (IR-UV HB) spectroscopy were used to record single-conformation spectra in the infrared and ultraviolet, respectively, free from interference from other conformations present in the molecular beam...
November 8, 2018: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/30255454/coolhair-a-prospective-randomized-trial-to-investigate-the-efficacy-and-tolerability-of-scalp-cooling-in-patients-undergoing-neo-adjuvant-chemotherapy-for-early-breast-cancer
#7
Katharina Smetanay, Philippe Junio, Manuel Feißt, Julia Seitz, Jessica Cecile Hassel, Luisa Mayer, Lina Maria Matthies, Arina Schumann, André Hennigs, Jörg Heil, Christof Sohn, Dirk Jaeger, Andreas Schneeweiss, Frederik Marmé
PURPOSE: Chemotherapy-induced alopecia (CIA) is a distressing side effect for women with breast cancer undergoing chemotherapy. Scalp cooling is a method aiming to prevent CIA, but its efficacy is not well defined. Randomized trials until recently and at the time this trial was designed have been lacking. METHODS: Patients undergoing (neo)adjuvant chemotherapy for early breast cancer (EBC) were randomized to scalp cooling (CAP) or observation (NoCAP). All patients received 18-24 weeks of anthracycline- and/or taxane-based chemotherapy...
September 25, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/30147638/a-slow-cooling-rate-in-situ-cell-for-long-duration-studies-of-mineral-precipitation-in-cold-aqueous-environments-on-earth-and-other-planetary-bodies
#8
Stephen P Thompson, Hilary Kennedy, Sarah J Day, Annabelle R Baker, Benjamin M Butler, Emmal Safi, Jon Kelly, Andrew Male, Jonathan Potter, Tom Cobb, Claire A Murray, Chiu C Tang, Aneurin Evans, Ronaldo Mercado
Liquid oceans and ice caps, along with ice crusts, have long been considered defining features of the Earth, but space missions and observations have shown that they are in fact common features among many of the solar system's outer planets and their satellites. Interactions with rock-forming materials have produced saline oceans not dissimilar in many respects to those on Earth, where mineral precipitation within frozen seawater plays a significant role in both determining global properties and regulating the environment in which a complex ecosystem of extremophiles exists...
August 1, 2018: Journal of Applied Crystallography
https://www.readbyqxmd.com/read/30143301/thermal-modelling-of-controlled-scalp-hypothermia-using-a-thermoelectric-cooling-cap
#9
Mark Baldry, Victoria Timchenko, Chris Menictas
This study presents a novel, thermoelectric cryotherapy cap that aims to provide effective and controlled scalp cooling to prevent hair loss for chemotherapy patients. The cap's design consists of multiple thermoelectric coolers (TECs) evenly spaced and bonded to a soft thermal interface material, tightly fitted to a patient's head. A numerical model is developed to assess the performance of alternative cap designs in relation to their ability to achieve hair follicle hypothermia. Under ideal conditions, 26...
August 2018: Journal of Thermal Biology
https://www.readbyqxmd.com/read/30130407/radiative-cooling-of-surface-modified-gold-nanorods-upon-pulsed-infrared-photoexcitation
#10
Shao-Syuan Guo, Li-Kang Chu
Transient infrared emissions of gold nanorods capped with various materials (AuNR@X, X = CTAB, PSS, mPEG, and SiO2 ) upon ∼70-μs pulsed 1064 nm excitation of their longitudinal surface plasmonic bands were collected with a time-resolved step-scan Fourier-transform spectrometer. Comparing the observed emission contours with the blackbody radiation spectra revealed that parts of the additional emission intensity at low wavenumbers (1300-1000 cm-1 ) were attributed to the vibrational modes of the capping materials, suggesting that the photothermal energy of AuNRs can be thermalized not only via blackbody radiation but also via radiative and nonradiative processes of the capping materials...
September 6, 2018: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29967546/synchronous-tropical-and-polar-temperature-evolution-in-the-eocene
#11
Margot J Cramwinckel, Matthew Huber, Ilja J Kocken, Claudia Agnini, Peter K Bijl, Steven M Bohaty, Joost Frieling, Aaron Goldner, Frederik J Hilgen, Elizabeth L Kip, Francien Peterse, Robin van der Ploeg, Ursula Röhl, Stefan Schouten, Appy Sluijs
Palaeoclimate reconstructions of periods with warm climates and high atmospheric CO2 concentrations are crucial for developing better projections of future climate change. Deep-ocean1,2 and high-latitude3 palaeotemperature proxies demonstrate that the Eocene epoch (56 to 34 million years ago) encompasses the warmest interval of the past 66 million years, followed by cooling towards the eventual establishment of ice caps on Antarctica. Eocene polar warmth is well established, so the main obstacle in quantifying the evolution of key climate parameters, such as global average temperature change and its polar amplification, is the lack of continuous high-quality tropical temperature reconstructions...
July 2018: Nature
https://www.readbyqxmd.com/read/29923063/persistent-major-alopecia-following-adjuvant-docetaxel-for-breast-cancer-incidence-characteristics-and-prevention-with-scalp-cooling
#12
M Martín, J C de la Torre-Montero, S López-Tarruella, K Pinilla, A Casado, S Fernandez, Y Jerez, J Puente, I Palomero, R González Del Val, M Del Monte-Millan, T Massarrah, C Vila, B García-Paredes, J A García-Sáenz, A Lluch
BACKGROUND: Persistent alopecia (PA) after docetaxel has been recently described. The aim of our study is to establish the incidence and characteristics of PA following adjuvant docetaxel for breast cancer (BC) and to test the ability of scalp cooling in prevention. PATIENTS AND METHODS: BC patients receiving adjuvant chemotherapy followed or not by endocrine therapy (and a control group receiving only endocrine therapy) were interviewed in a single institution at 1...
June 19, 2018: Breast Cancer Research and Treatment
https://www.readbyqxmd.com/read/29805513/effect-of-mild-hypothermia-on-expression-of-inflammatory-factors-in-surrounding-tissue-after-minimally-invasive-hematoma-evacuation-in-the-treatment-of-hypertensive-intracerebral-hemorrhage
#13
Jianhua Zhao, Qing Mao, Zhongxin Qian, Jun Zhu, Zhun Qu, Chao Wang
Mild hypothermia combined with minimally invasive hematoma evacuation was evaluated in the treatment of hypertensive intracerebral hemorrhage to reduce inflammatory response of brain tissue around hematoma and ameliorate brain function, and to investigate its safety, effectiveness and feasibility. A total of 206 patients with acute spontaneous hypertensive intracerebral hemorrhage were collected clinically and randomly divided into minimally invasive hematoma evacuation group (group A) and mild hypothermia combined with minimally invasive hematoma evacuation (group B)...
June 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29764556/-extra-longtime-continuous-chest-compression-to-rescue-cardiopulmonary-arrest-a-case-report-and-the-literature-review
#14
REVIEW
Yan Zhang, Tianxue Yue, Kexin Sun, Jiang Wang, Ruiwu Zhu
The new cardiopulmonary resuscitation (CPR) guideline emphasize the importance of chest compression, which was considered as the first step to CPR. The duration for CPR is usually limited to 30 minutes. With the development of new technology and evidence-based medicine, the success of extra longtime CPR has become possible, which is of great significance to some patients with cardiac arrest (CA), but the time limit has not been determined. On February 23rd in 2016, a 76-year-old female patient with respiratory and cardiac arrest who was on the third day after transurethral resection of bladder tumor (TUR-BT) was admitted to the intensive care unit of the General Hospital of Fushun Mining Bureau...
May 2018: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/29757650/analytical-model-for-diffusive-evaporation-of-sessile-droplets-coupled-with-interfacial-cooling-effect
#15
Tuan A H Nguyen, Simon R Biggs, Anh V Nguyen
Current analytical models for sessile droplet evaporation do not consider the nonuniform temperature field within the droplet and can overpredict the evaporation by 20%. This deviation can be attributed to a significant temperature drop due to the release of the latent heat of evaporation along the air-liquid interface. We report, for the first time, an analytical solution of the sessile droplet evaporation coupled with this interfacial cooling effect. The two-way coupling model of the quasi-steady thermal diffusion within the droplet and the quasi-steady diffusion-controlled droplet evaporation is conveniently solved in the toroidal coordinate system by applying the method of separation of variables...
June 12, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29529389/management-of-chemotherapy-induced-alopecia-with-scalp-cooling
#16
Megan Kruse, Jame Abraham
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 and add evidence supporting the efficacy and safety of scalp cooling in preventing chemotherapy-induced alopecia in patients receiving chemotherapy for solid tumor malignancies...
March 2018: Journal of Oncology Practice
https://www.readbyqxmd.com/read/29214505/efficacy-and-safety-of-three-cryotherapy-devices-for-wart-treatment-a-randomized-controlled-investigator-blinded-comparative-study
#17
Imko Walczuk, Frank Eertmans, Bart Rossel, Agnieszka Cegielska, Eggert Stockfleth, Andre Antunes, Els Adriaens
INTRODUCTION: Cutaneous warts are common skin lesions, caused by human papillomavirus. For years, liquid nitrogen is the cryogen of choice for wart treatment. Alternatively, several cryogenic devices for home treatment are commercially available. The present trial assessed efficacy and safety of a novel nitrous oxide-based cryogenic device for home use (EndWarts Freeze® in Europe, Compound W® Nitro-Freeze in the USA). METHODS: This investigator-blinded, controlled, randomized study compared the nitrous oxide device (test product) with a dimethylether propane-based product (Wartner® ; comparator 1)...
June 2018: Dermatology and Therapy
https://www.readbyqxmd.com/read/29148703/bond-energy-driven-low-or-high-angle-grain-boundary-movement-mediated-synthesis-of-porous-se-te-for-use-in-water-splitting-reactions
#18
Anup Kumar Sasmal, Arpan Kumar Nayak, Prashant Kartikeya, Debabrata Pradhan, Tarasankar Pal
Herein, for the first time, we applied the metal-metal-bond-energy factor to the evolution of a porous Se-Te alloy. The porous Se-Te material has been prepared from the constituents' elemental states, through only a heating-cooling process in silicone oil without the use of any reagent, surfactant, or capping agent. Surprisingly, the reaction occurred at a much lower temperature (240 °C) than the mp (450 °C) of Te0 . The reaction's nucleation and growth by means of varied bond energy have been clarified for the first time...
December 6, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28906503/release-of-irretrievable-abutment-healing-caps-using-cooling-proof-of-concept-and-clinical-recommendations
#19
Kifah Blal, Ori Rimon, Nardy Casap
PURPOSE: To study the relation between irretrievable abutment healing caps (AHCs), temperature, and the torque required to remove the AHCs from implants. MATERIALS AND METHODS: Twenty implants, 13 mm long and 4.2 mm in diameter, were inserted into four acrylic boxes and covered with acrylic resin. An AHC was screwed into each implant, using a 30 N/cm torque. The acrylic blocks were placed in a 37°C water bath, and subsequently, a block was removed from the bath, the AHCs were cooled, and the torque needed to release each AHC from the implant was measured using a torque wrench...
September 2017: International Journal of Oral & Maxillofacial Implants
https://www.readbyqxmd.com/read/28671600/low-cost-and-rapid-fabrication-of-metallic-nanostructures-for-sensitive-biosensors-using-hot-embossing-and-dielectric-heating-nanoimprint-methods
#20
Kuang-Li Lee, Tsung-Yeh Wu, Hsuan-Yeh Hsu, Sen-Yeu Yang, Pei-Kuen Wei
We propose two approaches-hot-embossing and dielectric-heating nanoimprinting methods-for low-cost and rapid fabrication of periodic nanostructures. Each nanofabrication process for the imprinted plastic nanostructures is completed within several seconds without the use of release agents and epoxy. Low-cost, large-area, and highly sensitive aluminum nanostructures on A4 size plastic films are fabricated by evaporating aluminum film on hot-embossing nanostructures. The narrowest bandwidth of the Fano resonance is only 2...
July 2, 2017: Sensors
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