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Lab quality

Min Yang, Mengmeng Liu, Dawei Yu, Jiaxi Zheng, Zhichao Wu, Shuguang Zhao, Jiang Chang, Yuansong Wei
The airlift external circulation membrane bioreactors (AEC-MBRs) have been attracting attentions due to their capabilities of nutrient removal with lower energy demand and smaller footprint. The gap between laboratory study and full-scale AEC-MBRs regarding hydrodynamics needs to be addressed. In this study, impacts of seven design variables and cyclic aeration modes on hydrodynamics were studied for the scale-up of AEC-MBRs with computational fluid dynamics modelling. The results demonstrated that shear stress on membranes was 14...
September 6, 2017: Bioresource Technology
Iris Heidmann, Marco Di Berardino
Analyzing pollen quality in an efficient and reliable manner is of great importance to the industries involved in seed and fruit production, plant breeding, and plant research. Pollen quality parameters, viability and germination capacity, are analyzed by various staining methods or by in vitro germination assays, respectively. These methods are time-consuming, species-dependent, and require a lab environment. Furthermore, the obtained viability data are often poorly related to in vivo pollen germination and seed set...
2017: Methods in Molecular Biology
Mohit Vijay Rojekar, Vandana Kumawat, Jayesh Panot, Surekha Khedkar, Arati Adhe-Rojekar
BACKGROUND: Glucometers are the excellent tools for self-monitoring of blood glucose (SMBG). They are important especially in the circumstances where continuous monitoring is mandatory and at decision making levels. Tight glycemic control protocols are important for preventing the ill effects of fluctuating glucose levels. This increases the use of glucometers in various healthcare settings. As technology advances, glucometers are getting better in terms of quality of results. But still some lacunae are there...
2017: Journal of Diabetes and Metabolic Disorders
Mark Ma, Nanda Balasubramanian, Robert Dodge, Yan Zhang
Gene and nucleic acid therapies have demonstrated patient benefits to address unmet medical needs. Beside considerations regarding the biological nature of the gene therapy, the quality of bioanalytical methods plays an important role in ensuring the success of these novel therapies. Inconsistent approaches among bioanalytical labs during preclinical and clinical phases have been observed. There are many underlying reasons for this inconsistency. Various platforms and reagents used in quantitative methods, lacking of detailed regulatory guidance on method validation and uncertainty of immunogenicity strategy in supporting gene therapy may all be influential...
September 18, 2017: Bioanalysis
Hye Kyung Jin, Jae Hee Choi, Ji Eun Kang, Sandy Jeong Rhie
Communication skills in pharmacy education and practice are increasingly regarded as a crucial component. However, thus far, estimating of the overall communication skills training (CST) effects in a variety of outcomes is lacking. The aim of this study was to synthesize the effects of CST in pharmacy education by performing a meta-analysis of CST studies. We searched MEDLINE, EMBASE, ERIC, CINAHL, PsycINFO, Cochrane Library, Web of Science, Communication and Mass Media Complete (CMMC), key journals, and bibliographic databases...
September 16, 2017: Advances in Health Sciences Education: Theory and Practice
Nabil Al-Humadi
Vaccine development requires pre-clinical toxicology studies, following good laboratory practice (GLP), before first in human (phase I) use. Many factors are critical in the final outcome of any pre-clinical toxicology study. The study design is one of these critical factors and should be carefully planned to avoid any false negative and/or false positive results. Preparation is another most critical factor in a successful study. Major changes in any procedure during the course of study should be avoided by all means...
September 12, 2017: Vaccine
Salah S Al-Zaiti, Mohammad Alrawashdeh, Christian Martin-Gill, Clifton Callaway, David Mortara, Jan Nemec
BACKGROUND: Acute myocardial ischemia is a common cause of ventricular arrhythmias, yet recent ECG methods predicting susceptibility to ventricular tachyarrhythmia have not been fully evaluated during spontaneous ischemia. We sought to evaluate the clinical utility of alternans and non-alternans components of repolarization variability from the standard 10-second 12-lead ECG signals to risk stratify patients with acute chest pain. METHODS: We enrolled consecutive, non-traumatic, chest pain patients transported through Emergency Medical Services (EMS) to three tertiary care hospitals with cardiac catheterization lab capabilities in Pittsburgh, PA...
August 10, 2017: Journal of Electrocardiology
L Paredes, F Omil, J M Lema, M Carballa
The phototransformation of 18 organic micropollutants (OMPs) commonly detected in wastewater treatment plant (WWTP) effluents was examined attempting to explain their fate during UV disinfection in WWTPs. For this purpose, a lab-scale UV reactor (lamp emitting at 254nm) was used to study the influence of the operational conditions (UV dose, temperature and water matrix) on OMPs abatement and disinfection efficiency. Chemical properties of OMPs and the quality of treated effluent were identified as key factors affecting the phototransformation rate of these compounds...
September 9, 2017: Journal of Hazardous Materials
Brad E Wasserman, Daniel E Carvajal-Hausdorf, Kenneth Ho, Wendy Wong, Natalie Wu, Victor C Chu, Edwin W Lai, Jodi M Weidler, Michael Bates, Veronique Neumeister, David L Rimm
Historically, mRNA measurements have been tested on several commercially available platforms, but none have gained broad acceptance for assessment of HER2. An mRNA measurement, as a continuous value, has the potential for use in adjudication of the equivocal category. Here we use a real-time quantitative reverse transcription polymerase chain reaction (RT-qPCR) assay in a closed, single-use cartridge, automated system. Multiple cores (1 mm in diameter) were retrospectively collected from 80 formalin-fixed paraffin-embedded (FFPE) tissue blocks with invasive breast cancer seen by Yale Pathology Labs between 1998 and 2011...
September 11, 2017: Laboratory Investigation; a Journal of Technical Methods and Pathology
H-L Alakomi, J Maukonen, K Honkapää, E Storgårds, K-W Quirin, B Yang, M Saarela
The food industry, including the meat industry, is currently looking for natural preservatives to prevent the growth of harmful microbes in foods. The potential of plant-derived antimicrobial extracts to increase the shelf life and to delay the microbiological spoilage of marinated broiler chicken cuts in modified atmosphere packages during cold storage was investigated in this study. We evaluated the impact of aqueous ethanolic extracts of Finnish sea buckthorn berries and lingonberries and supercritical CO2-extracted herbal extracts from an antimicrobial blend and oregano leaves on the shelf life of broiler meat...
September 8, 2017: Journal of Food Protection
Mohamed Abd Elaziz, Ahmed Monem Hemdan, AboulElla Hassanien, Diego Oliva, Shengwu Xiong
The current economics of the fish protein industry demand rapid, accurate and expressive prediction algorithms at every step of protein production especially with the challenge of global climate change. This help to predict and analyze functional and nutritional quality then consequently control food allergies in hyper allergic patients. As, it is quite expensive and time-consuming to know these concentrations by the lab experimental tests, especially to conduct large-scale projects. Therefore, this paper introduced a new intelligent algorithm using adaptive neuro-fuzzy inference system based on whale optimization algorithm...
September 7, 2017: Scientific Reports
Dieudonné D Soma, Hamidou Maïga, Wadaka Mamai, Nanwintoun S Bimbile-Somda, Nelius Venter, Adel B Ali, Hanano Yamada, Abdoulaye Diabaté, Florence Fournet, Georges A Ouédraogo, Rosemary S Lees, Roch K Dabiré, Jeremie R L Gilles
BACKGROUND: The success of the sterile insect technique depends, among other things, on continuous releases of sexually competitive sterile males within the target area. Several factors (including high rearing density and physical manipulation, such as larvae and pupae separation) can influence the quality of males produced in mass-rearing facilities. The different steps in mass production in the laboratory may modify the behaviour of mosquitoes, directly or through loss of natural characters as a result of adaptation to lab rearing, and lead to the competitiveness of sterile male being reduced...
September 7, 2017: Malaria Journal
Zongjie Wang, Akash Boddeda, Benjamin Parker, Roya Samanipour, Sanjoy Ghosh, Frederic Menard, Keekyoung Kim
OBJECTIVE: Compact, cost-effective and high-performance microscope that enables the real-time imaging of cells and lab-on-a-chip devices is highly demanded for cell biology and biomedical engineering. This paper aims to present the design and application of an inexpensive wireless mini-microscope with resolution up to 2592 × 1944 pixels and speed up to 90 fps. METHODS: The mini-microscope system was built on a commercial embedded system (Raspberry Pi). We modified a camera module and adopted an inverse dual lens system to obtain the clear field of view and appropriate magnification for tens of micrometer objects...
September 4, 2017: IEEE Transactions on Bio-medical Engineering
Toshio Matsushima, J Richard Lister, Ken Matsushima, Evandro de Oliveira, Erdener Timurkaynak, David A Peace, Shigeaki Kobayashi
The work performed in Dr. Rhoton's Lab, represented by over 500 publications on microneurosurgical anatomy, greatly contributed to improving the level of neurosurgical treatment throughout the world. The authors reviewed the development and activities of the Lab over 40 years. Dr. Albert L. Rhoton Jr., the founder of, and leader in, this field, displayed great creativity and ingenuity during his life. He devoted himself to perfecting his study methodology, employing high-definition photos and slides to enhance the quality of his published papers...
September 6, 2017: Neurosurgical Review
Elena Bartkiene, Vadims Bartkevics, Vita Krungleviciute, Iveta Pugajeva, Daiva Zadeike, Grazina Juodeikiene
Different lactic acid bacteria (LAB) from spontaneous wheat sourdough were isolated, identified, and characterized by their growth, acidification rate, and carbohydrate metabolism. The combinations of isolated LAB (Pediococcus pentosaceus LUHS183 and Leuconostoc mesenteroides LUHS242, P. pentosaceus LUHS183 and Lactobacillus brevis LUHS173, P. pentosaceus LUHS183 and Enterococcus pseudoavium LUHS 234, P. pentosaceus LUHS183 and Lactobacillus curvatus LUHS51, Lactobacillus plantarum LUHS135 and L. curvatus LUHS51, L...
September 6, 2017: Journal of Food Science
Enrico Maria Zardi, Luca Di Geso, Antonella Afeltra, Domenico Maria Zardi, Chiara Giorgi, Fausto Salaffi, Marina Carotti, Marwin Gutierrez, Emilio Filippucci, Walter Grassi
To validate the clinical applicability and feasibility of an automated ultrasound (US) method in measuring the arterial stiffness of patients with chronic inflammatory rheumatic diseases, comparing automated measurements performed by a rheumatologist without experience in vascular sonography with those obtained by a sonographer experienced in vascular US, using a standardized manual method.Twenty subjects affected by different chronic inflammatory rheumatic disorders were consecutively recruited. For each patient, the arterial stiffness of both common carotids was manually calculated...
September 2, 2017: Journal of Investigative Medicine: the Official Publication of the American Federation for Clinical Research
Xuan Chen, Miao Zheng, Jia Liu, Zeyuan Deng, Bing Zhang, Hongyan Li
BACKGROUND: To improve the characteristic and safety of traditional cuocai, the selection and us of mixed starter cultures is important. This work was aimed to isolate the main indigenous LAB and yeast species from spontaneous fermented mustard leaves, and they were used as starter cultures to ferment mustard leaves. RESULTS: Five predominant lactic acid bacteria (LAB) including Q-1 (Enterococcus faecalis), G-1 (Lactobacillus plantarum), G-3 (Lactobacillus pentosus), G-2 and G-4 (Lactobacillus buchneri)strains and two yeast strains including J-1 (Issatchenkia orientalis) and J-2 (Issatchenkia occidentalis)strains were isolated from cuocai...
September 1, 2017: Journal of the Science of Food and Agriculture
Maria Pia Martinez, Maria Laura Gonzalez Pereyra, Gabriela Alejandra Pena, Valeria Poloni, Guillermina Fernandez Juri, Lilia Reneé Cavaglieri
Probiotics are being used as biologic controllers in the prevention of bacterial pathogens as an alternative to antibiotics to improve health and production parameters in fish farming. Fish farming production is severely affected by aflatoxins (AFs) representing a significant problem in aquaculture systems. Aflatoxins exert a substantial impact on production causing disease with high mortality and a gradual decline of reared fish stock quality. Some aspects of aflatoxicosis in fish, particularly its effects on the gastrointestinal tract (GIT), have not been well documented...
August 31, 2017: Food Additives & Contaminants. Part A, Chemistry, Analysis, Control, Exposure & Risk Assessment
Boris Dubrovsky, Malvin N Janal, Gilles J Lavigne, David A Sirois, Pia E Wigren, Lena Nemelivsky, Ana C Krieger, Karen G Raphael
BACKGROUND: Temporomandibular disorder (TMD) patients report poor sleep quality on the Pittsburgh Sleep Quality Index (PSQI). However, polysomnographic (PSG) studies show meager evidence of sleep disturbance on standard physiological measures. OBJECTIVE: The present aim was to analyze self-reported sleep quality in TMD as a function of myofascial pain, PSG parameters, and depressive symptomatology. METHODS: PSQI scores from 124 women with myofascial TMD and 46 matched controls were hierarchically regressed onto TMD presence, ratings of pain intensity and pain-related disability, in-lab PSG variables, and depressive symptoms (Symptoms Checklist-90)...
August 29, 2017: Journal of Oral Rehabilitation
Weifang Lu, Yiyu Ou, Elisabetta Maria Fiordaliso, Yoshimi Iwasa, Valdas Jokubavicius, Mikael Syväjärvi, Satoshi Kamiyama, Paul Michael Petersen, Haiyan Ou
We report for the first time a NUV light to white light conversion in a N-B co-doped 6H-SiC (fluorescent SiC) layer containing a hybrid structure. The surface of fluorescent SiC sample contains porous structures fabricated by anodic oxidation method. After passivation by 20 nm thick Al2O3, the photoluminescence intensity from the porous layer was significant enhanced by a factor of more than 12. Using a porous layer of moderate thickness (~10 µm), high-quality white light emission was realized by combining the independent emissions of blue-green emission from the porous layer and yellow emission from the bulk fluorescent SiC layer...
August 29, 2017: Scientific Reports
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