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https://www.readbyqxmd.com/read/29245152/operator-pelvic-radiation-exposure-during-percutaneous-coronary-procedures
#1
Alessandro Sciahbasi, Emanuela Piccaluga, Alessandro Sarandrea, Giacomo Nucci, Nicola Caretto, Stefano Rigattieri, Silvio Fedele, Silvio Romano, Maria Penco
OBJECTIVES: To evaluate operator pelvic radiation exposure during percutaneous coronary procedures. BACKGROUND: During percutaneous coronary procedures, the operator's pelvic region is close to the x-ray source and is probably exposed to more radiation than the operator's thorax. However, no data are available on the pelvic radiation exposure of interventional cardiologists. METHODS: The RADIANT study (NCT01974453) is a prospective, single-center, observational study evaluating operator radiation exposure during percutaneous coronary procedures using electronic dosimeters placed at thorax level...
December 15, 2017: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29245129/a-novel-approach-of-modeling-continuous-dark-hydrogen-fermentation
#2
Maria Alexandropoulou, Georgia Antonopoulou, Gerasimos Lyberatos
In this study a novel modeling approach for describing fermentative hydrogen production in a continuous stirred tank reactor (CSTR) was developed, using the Aquasim modeling platform. This model accounts for the key metabolic reactions taking place in a fermentative hydrogen producing reactor, using fixed stoichiometry but different reaction rates. Biomass yields are determined based on bioenergetics. The model is capable of describing very well the variation in the distribution of metabolic products for a wide range of hydraulic retention times (HRT)...
December 6, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/29245096/pre-and-post-operative-evaluation-of-pincer-type-femoroacetabular-impingement-during-squat-using-image-matching-techniques-a-case-report
#3
Kensei Yoshimoto, Satoshi Hamai, Hidehiko Higaki, Hirotaka Gondo, Satoru Ikebe, Yasuharu Nakashima
INTRODUCTION: Although combined evaluation of hip joint kinematics and bone morphology is necessary for accurate assessment of femoroacetabular impingement (FAI), there are no report which evaluated hip kinematics of pincer-type FAI. PRESENTATION OF CASE: The pre- and postoperative hip kinematics of a 46-year-old man, with a pincer-type FAI during squat were evaluated using image-matching techniques and the rim-neck distance was measured. Preoperative simulation of squatting was also performed using patient's bone models and healthy subject's kinematics data to detect the overlapping lesion between the acetabulum and the femur...
December 8, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/29245056/subcutaneous-trastuzumab-herceptin-versus-intravenous-trastuzumab-for-the-treatment-of-patients-with-her2-positive-breast-cancer-a-time-motion-and-cost-assessment-study-in-a-lean-operating-day-care-oncology-unit
#4
Wiebren A A Tjalma, Tom Van den Mooter, Tim Mertens, Valerie Bastiaens, Manon T Huizing, Konstantinos Papadimitriou
OBJECTIVE: The subcutaneous (SC) formulation of trastuzumab represents an alternative to the intravenous (IV) infusion in the treatment of patients with HER2-positive metastatic and early breast cancer. We compared the two formulations in terms of time and cost differential. STUDY DESING: We conducted a time, motion and cost assessment study in a lean operating day care oncology unit to determine and compare the time and costs of trastuzumab SC versus IV administration in patients with HER2-positive breast cancer...
December 7, 2017: European Journal of Obstetrics, Gynecology, and Reproductive Biology
https://www.readbyqxmd.com/read/29245036/inhibition-of-microbial-fuel-cell-operation-for-municipal-wastewater-treatment-by-impact-loads-of-free-ammonia-in-bench-and-45l-scale
#5
Heinz Hiegemann, Manfred Lübken, Patrick Schulte, Karl-Georg Schmelz, Sylvia Gredigk-Hoffmann, Marc Wichern
A 45-liter microbial fuel cell (MFC) system was integrated into a full-scale wastewater treatment plant (WWTP). The system was operated under practical conditions with supernatant of a pre-thickener for 50days in order to identify, whether higher power output and energy recovery is possible compared to the use of primary clarifier effluent, as used in a previous study. The higher COD (chemical oxygen demand) loading rates of supernatant neither increased power densities, nor energy recovery, but impact loads of total ammonia nitrogen (TAN) in concentrations >800mg/L (free ammonia nitrogen (FAN)>40mg/L) led to an instant collapse of power output and nutrient removal, which was reversed when ammonia concentrations decreased...
December 12, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29245015/snapshot-abscisic-acid-signaling
#6
Felix Hauser, Zixing Li, Rainer Waadt, Julian I Schroeder
Abscisic acid is a key phytohormone produced in response to abiotic stress conditions and is an activator of abiotic stress resistance mechanisms and a regulator during diverse developmental stages in plants. This SnapShot explores how ABA signaling operates and coordinates resistance during stress responses and modulates plant development.
December 14, 2017: Cell
https://www.readbyqxmd.com/read/29245001/management-of-the-maxillary-diastema-by-various-dental-specialties
#7
Bryan Wheeler, Caroline K Carrico, Bhavna Shroff, Tegman Brickhouse, Daniel M Laskin
PURPOSE: There is considerable controversy in the literature concerning the indications for frenectomy for treating a maxillary diastema and for timing of the procedure. The purpose of this study was to survey pediatric dentists, orthodontists, and oral and maxillofacial surgeons on their opinion of this matter to develop a consensus. MATERIALS AND METHODS: An anonymous 7-item electronic questionnaire was sent to members of the American Academy of Pediatric Dentists, the American Association of Orthodontists, and the American Association of Oral and Maxillofacial Surgeons asking about the etiology of the maxillary diastema, its diagnosis, and treatment...
November 22, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29244839/direct-and-indirect-climate-controls-predict-heterogeneous-early-mid-21st-century-wildfire-burned-area-across-western-and-boreal-north-america
#8
Thomas Kitzberger, Donald A Falk, Anthony L Westerling, Thomas W Swetnam
Predicting wildfire under future conditions is complicated by complex interrelated drivers operating across large spatial scales. Annual area burned (AAB) is a useful index of global wildfire activity. Current and antecedent seasonal climatic conditions, and the timing of snowpack melt, have been suggested as important drivers of AAB. As climate warms, seasonal climate and snowpack co-vary in intricate ways, influencing fire at continental and sub-continental scales. We used independent records of seasonal climate and snow cover duration (last date of permanent snowpack, LDPS) and cell-based Structural Equation Models (SEM) to separate direct (climatic) and indirect (snow cover) effects on relative changes in AAB under future climatic scenarios across western and boreal North America...
2017: PloS One
https://www.readbyqxmd.com/read/29244808/fgmd-a-novel-approach-for-functional-gene-module-detection-in-cancer
#9
Daeyong Jin, Hyunju Lee
With the increasing availability of multi-dimensional biological datasets for the same samples (i.e., gene expression, microRNAs, copy numbers, mutations, methylations), it has now become possible to systematically understand the regulatory mechanisms operating in a cancer cell. For this task, it is important to discover a set of co-expressed genes with functions, representing a so-called functional gene module, because co-expressed genes tend to be co-regulated by the same regulators, including transcription factors, microRNAs, and copy number aberrations...
2017: PloS One
https://www.readbyqxmd.com/read/29244761/study-of-separation-and-fouling-of-reverse-osmosis-membranes-during-model-hydrolysate-solution-filtration
#10
Olumoye Ajao, Mohamed Rahni, Mariya Marinova, Hassan Chadjaa, Oumarou Savadogo
Prehydrolysate, a dilute solution consisting mainly of pentoses, hexoses, and lesser quantities of organic acids, furfural and phenolics, is generated in the Kraft dissolving pulp process. An obstacle facing the valorization of the solution in hemicellulose biorefineries, by conversion of the sugars into bioproducts such as furfural, is the low sugar concentration. Membrane filtration is typically proposed in several hemicellulose based biorefineries for concentrating the solution, although they are usually generated using different wood species, pretreatment methods, and operating conditions...
December 15, 2017: Membranes
https://www.readbyqxmd.com/read/29244757/expression-of-staphylococcal-enterotoxins-under-stress-encountered-during-food-production-and-preservation
#11
REVIEW
Jenny Schelin, Yusak Budi Susilo, Sophia Johler
Staphylococcal food poisoning (SFP) is the most prevalent cause of food-borne intoxications worldwide. Consumption of enterotoxins preformed in food causes violent vomiting and can be fatal in children and the elderly. While being repressed by competing bacteria in most matrices, Staphylococcus aureus benefits from crucial competitive advantages in foods with high osmolarity or low pH. During recent years, the long-standing belief in the feasibility of assessing SFP risk based on colony-forming units of S. aureus present in food products has been disproven...
December 15, 2017: Toxins
https://www.readbyqxmd.com/read/29244753/identification-of-a-multicomponent-traditional-herbal-medicine-by-hplc-ms-and-electron-and-light-microscopy
#12
Ju-Han Liu, Yung-Yi Cheng, Chen-Hsi Hsieh, Tung-Hu Tsai
BACKGROUND: Commercial pharmaceutical herbal products have enabled people to take traditional Chinese medicine (TCM) in a convenient and accessible form. However, the quantity and quality should be additionally inspected. To address the issue, a combination of chemical and physical inspection methods were developed to evaluate the amount of an herbal formula, Xiang-Sha-Liu-Jun-Zi-Tang (XSLJZT), in clinical TCM practice. METHODS: A high-performance liquid chromatography-tandem mass spectrometry (HPLC-MS) method with electrospray ionization was developed to measure the herbal biomarkers of guanosine, atractylenolide III, glycyrrhizic acid, dehydrocostus lactone, hesperidin, and oleanolic acid from XSLJZT...
December 15, 2017: Molecules: a Journal of Synthetic Chemistry and Natural Product Chemistry
https://www.readbyqxmd.com/read/29244732/middleware-for-plug-and-play-integration-of-heterogeneous-sensor-resources-into-the-sensor-web
#13
Enoc Martínez, Daniel M Toma, Simon Jirka, Joaquín Del Río
The study of global phenomena requires the combination of a considerable amount of data coming from different sources, acquired by different observation platforms and managed by institutions working in different scientific fields. Merging this data to provide extensive and complete data sets to monitor the long-term, global changes of our oceans is a major challenge. The data acquisition and data archival procedures usually vary significantly depending on the acquisition platform. This lack of standardization ultimately leads to information silos, preventing the data to be effectively shared across different scientific communities...
December 15, 2017: Sensors
https://www.readbyqxmd.com/read/29244722/fault-diagnosis-of-internal-combustion-engine-valve-clearance-using-the-impact-commencement-detection-method
#14
Zhinong Jiang, Zhiwei Mao, Zijia Wang, Jinjie Zhang
Internal combustion engines (ICEs) are widely used in many important fields. The valve train clearance of an ICE usually exceeds the normal value due to wear or faulty adjustment. This work aims at diagnosing the valve clearance fault based on the vibration signals measured on the engine cylinder heads. The non-stationarity of the ICE operating condition makes it difficult to obtain the nominal baseline, which is always an awkward problem for fault diagnosis. This paper overcomes the problem by inspecting the timing of valve closing impacts, of which the referenced baseline can be obtained by referencing design parameters rather than extraction during healthy conditions...
December 15, 2017: Sensors
https://www.readbyqxmd.com/read/29244718/prebiotic-dietary-fiber-and-gut-health-comparing-the-in-vitro-fermentations-of-beta-glucan-inulin-and-xylooligosaccharide
#15
Justin L Carlson, Jennifer M Erickson, Julie M Hess, Trevor J Gould, Joanne L Slavin
Prebiotic dietary fiber supplements are commonly consumed to help meet fiber recommendations and improve gastrointestinal health by stimulating beneficial bacteria and the production of short-chain fatty acids (SCFAs), molecules beneficial to host health. The objective of this research project was to compare potential prebiotic effects and fermentability of five commonly consumed fibers using an in vitro fermentation system measuring changes in fecal microbiota, total gas production and formation of common SCFAs...
December 15, 2017: Nutrients
https://www.readbyqxmd.com/read/29244690/aseptic-lymphocyte-dominated-vasculitis-associated-lesion-as-early-as-six-weeks-after-total-hip-replacement-a-case-report
#16
Sajid Khawaja, Graeme Holt, Aman Khan
CASE: A 40-year-old man who underwent total hip replacement on the left side with a metal-on-metal (MOM) implant reported swelling at the operative site within 6 weeks of the arthroplasty. Tissue sampled during the revision arthroplasty showed an aseptic lymphocyte-dominated vasculitis-associated lesion (ALVAL). CONCLUSION: ALVAL is a widely recognized complication of MOM hip implants and needs to be considered early, even in completely asymptomatic patients with normal metal ion levels and normal radiographs...
January 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29244680/irreducible-ankle-fracture-from-an-interposed-chaput-fragment-a-case-report
#17
Chihua Lee, Thomas J Douglas
CASE: A 23-year-old active-duty military service member sustained an unusual irreducible fracture-dislocation of the ankle joint. Preoperative computed tomography showed an anterolateral tibial (Chaput) fragment entrapped within the distal syndesmosis, preventing adequate reduction. An open reduction of the fragment was performed in the operating room, which allowed near-anatomic reduction and internal fixation of the tibiotalar joint. At the 21-month follow-up visit, the patient remained on active duty in the Navy without limitations...
April 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29244669/operative-fixation-of-an-anterior-inferior-iliac-spine-apophyseal-avulsion-fracture-nonunion-in-an-adolescent-soccer-player-a-case-report
#18
James B Carr, Evan Conte, Evan A Rajadhyaksha, Kevin A Laroche, F Winston Gwathmey, Eric W Carson
CASE: A 14-year-old male competitive soccer player presented with a history of recurrent right hip pain for 18 months. He was diagnosed with an anterior inferior iliac spine (AIIS) apophyseal avulsion fracture nonunion with subspinal impingement, which was confirmed by radiographs, computed tomography, and magnetic resonance imaging. The patient underwent surgical fixation and subspinal decompression. He returned to competitive soccer 5 months postoperatively. CONCLUSION: AIIS apophyseal avulsion fractures occur in adolescent athletes and generally respond to nonoperative treatment...
April 2017: JBJS Case Connector
https://www.readbyqxmd.com/read/29244640/cross-frequency-phase-amplitude-coupling-as-a-mechanism-for-temporal-orienting-of-attention-in-childhood
#19
Giovanni Mento, Duncan E Astle, Gaia Scerif
Temporal orienting of attention operates by biasing the allocation of cognitive and motor resources in specific moments in time, resulting in the improved processing of information from expected compared with unexpected targets. Recent findings have shown that temporal orienting operates relatively early across development, suggesting that this attentional mechanism plays a core role for human cognition. However, the exact neurophysiological mechanisms allowing children to attune their attention over time are not well understood...
December 15, 2017: Journal of Cognitive Neuroscience
https://www.readbyqxmd.com/read/29244620/calming-cycle-theory-and-the-co-regulation-of-oxytocin
#20
Martha G Welch, Robert J Ludwig
The biological functions of oxytocin in attachment and bonding between mother and infant in parturition and breastfeeding and between adults have been studied extensively. However, most current authors have proposed that infant attachment to the mother is learned through operant conditioning mechanisms via the infant's brain and central nervous system. We propose that oxytocin levels in the mother and infant are co-regulated by emotional connection or disconnection, and that the autonomic co-conditioning learning mechanism can be exploited to change a negative physiological and behavioral response between mother and infant into a positive one...
2017: Psychodynamic Psychiatry
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