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https://www.readbyqxmd.com/read/29793209/effect-of-thermal-pretreatment-on-chemical-composition-physical-structure-and-biogas-production-kinetics-of-wheat-straw
#1
Asad Ayub Rajput, Zeshan, Chettiyappan Visvanathan
Hard lignocellulosic structure of wheat straw is the main hindrance in its anaerobic digestion. Thus, a laboratory scale batch experiment was conducted to study the effect of thermal pretreatment on anaerobic digestion of wheat straw. For this purpose, different thermal pretreatment temperatures of 120, 140, 160 and 180 °C were studied and the results were compared with raw wheat straw. Significant differences in biogas production were observed at temperature higher than 160 °C. Highest biogas yield of 615 Nml/gVS and volatile solids reduction of 69% was observed from wheat straw pretreated at 180 °C...
May 21, 2018: Journal of Environmental Management
https://www.readbyqxmd.com/read/29793178/nrf2-p-glycoprotein-axis-is-associated-with-clinicopathological-characteristics-in-colorectal-cancer
#2
Mohammad Reza Sadeghi, Farhad Jeddi, Narges Soozangar, Mohammad Hossein Somi, Masoud Shirmohamadi, Vahid Khaze, Nasser Samadi
Colorectal cancer (CRC) is the fourth leading cause of cancer-related death worldwide. Activation of ABCB1 gene and its main product, P-glycoprotein, is the common reason for chemoresistance. The nuclear factor-erythroid 2-related factor2 (Nrf2) is directly regulated by Kelch like ECH-associated protein1 (Keap1). In addition, Nrf2 is a key transcriptional factor that regulates efflux transporters, including P-gp. The aim of this study was to investigate the expression levels of Nrf2, Keap1 and ABCB1 in the biopsy samples and their association with clinicopathological features in CRC patients...
May 21, 2018: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/29793110/remembrance-of-inferences-past-amortization-in-human-hypothesis-generation
#3
Ishita Dasgupta, Eric Schulz, Noah D Goodman, Samuel J Gershman
Bayesian models of cognition assume that people compute probability distributions over hypotheses. However, the required computations are frequently intractable or prohibitively expensive. Since people often encounter many closely related distributions, selective reuse of computations (amortized inference) is a computationally efficient use of the brain's limited resources. We present three experiments that provide evidence for amortization in human probabilistic reasoning. When sequentially answering two related queries about natural scenes, participants' responses to the second query systematically depend on the structure of the first query...
May 21, 2018: Cognition
https://www.readbyqxmd.com/read/29793109/17%C3%AE-estradiol-as-precursors-of-cl-br-dbps-in-the-disinfection-process-of-different-water-samples
#4
Yanan Shao, Zihan Pan, Chuan Rong, Yinghui Wang, Hongxiang Zhu, Yuanyuan Zhang, Kefu Yu
During chlorine disinfection process, reactions between the disinfectant and 17β-estradiol (E2) lead to the formation of halogenated disinfection byproducts (DBPs) which can be a risk to both ecosystem and human health. The degradation and transformation products of E2 in sodium hypochlorite (NaClO) disinfection processes of different water samples were investigated. The reaction kinetics research showed that the degradation rates of E2 were considerably dependent on the initial pH value and the types of water samples...
May 21, 2018: Environmental Pollution
https://www.readbyqxmd.com/read/29793074/cross-linked-electrospun-cartilage-acellular-matrix-poly-caprolactone-co-lactide-co-glycolide-nanofiber-as-an-antiadhesive-barrier
#5
Jin Woo Lee, Joon Yeong Park, Seung Hun Park, Min Ju Kim, Bo Ram Song, Hee-Woong Yun, Tae Woong Kang, Hak Soo Choi, Young Jick Kim, Byoung Hyun Min, Moon Suk Kim
In this work, we chose cartilage acellular matrix (CAM) as a promising antiadhesive material because CAM effectively inhibits the formation of blood vessels, and we used electrospinning to prepare antiadhesive barriers. Additionally, we synthesized N-hydroxysuccinimide (NHS)-poly(caprolactone-co-lactide-co-glycolide)-NHS (MP) copolymers (to tune degradation) as a cross-linking agent for CAM. This is the first report on the development of electrospun cross-linked (Cx) CAM/MP (CA/P) nanofiber (NF) (Cx-CA/P-NF) with a tunable degradation period as an antiadhesive barrier...
May 21, 2018: Acta Biomaterialia
https://www.readbyqxmd.com/read/29793023/kinetics-and-stereochemistry-of-linb-catalyzed-%C3%AE-hbcd-transformation-comparison-of-in-vitro-and-in-silico-results
#6
Norbert V Heeb, Manuel Mazenauer, Simon Wyss, Birgit Geueke, Hans-Peter E Kohler, Peter Lienemann
LinB is a haloalkane dehalogenase found in Sphingobium indicum B90A, an aerobic bacterium isolated from contaminated soils of hexachlorocyclohexane (HCH) dumpsites. We showed that this enzyme also converts hexabromocyclododecanes (HBCDs). Here we give new insights in the kinetics and stereochemistry of the enzymatic transformation of δ-HBCD, which resulted in the formation of two pentabromocyclododecanols (PBCDols) as first- (P1δ , P2δ ) and two tetrabromocyclododecadiols (TBCDdiols) as second-generation products (T1δ , T2δ )...
May 12, 2018: Chemosphere
https://www.readbyqxmd.com/read/29792995/lumbar-discectomy-is-associated-with-higher-rates-of-lumbar-fusion
#7
Hector Castillo, Ravi Chintapalli, Harout Boyajian, Sebastian A Cruz, Vince K Morgan, Lewis L Shi, Michael J Lee
BACKGROUND CONTEXT: Lumbar disc herniation affects over three million people in the United States every year, and the rate of operation continually increases, particularly in patients 60 years or older.1,2 Surgical discectomy is a common treatment for lumbar disc herniation.1,3 One concern for this method is the risk of undergoing additional surgeries. 2,5,7 There are very limited population-level studies that examine the rate of lumbar fusion following lumbar discectomy. Additionally, there is no study that examines the risk of undergoing lumbar fusion in patients who have undergone lumbar discectomies compared to the risk of lumbar fusion in the general population with no previous lumbar discectomy...
May 21, 2018: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/29792986/model-based-nir-spectroscopy-implementation-for-in-line-assay-monitoring-during-a-pharmaceutical-suspension-manufacturing-process
#8
Maxim Verstraeten, Daan Van Hauwermeiren, Mario Hellings, Eline Hermans, Jeroen Geens, Chris Vervaet, Ingmar Nopens, Thomas De Beer
The implementation of Process Analytical Technology (PAT) instruments is generally achieved stochastically. Sub-optimal PAT locations could introduce variation in the measurements which is not related to the analyte of interest. For this reason, rational approaches should be considered to establish an optimal sensor placement where relevant measurements are possible and the impact of disturbances is minimized. The aim of this paper is to demonstrate how mechanistic modelling can support appropriate sensor implementation by means of a case study...
May 21, 2018: International Journal of Pharmaceutics
https://www.readbyqxmd.com/read/29792940/a-randomized-control-trial-to-determine-the-effectiveness-and-physiological-effects-of-spinal-manipulation-and-spinal-mobilization-compared-to-each-other-and-a-sham-condition-in-patients-with-chronic-low-back-pain-study-protocol-for-the-relief-study
#9
Brian C Clark, David W Russ, Masato Nakazawa, Christopher R France, Stevan Walkowski, Timothy D Law, Megan Applegate, Niladri Mahato, Samuel Lietkam, James Odenthal, Daniel Corcos, Simeon Hain, Betty Sindelar, Robert J Ploutz-Snyder, James S Thomas
BACKGROUND: Low back pain (LBP) is one of the most common reasons for seeking medical care. Manipulative therapies are a common treatment for LBP. Few studies have compared the effectiveness of different types of manipulative therapies. Moreover, the physiologic mechanisms underlying these treatments are not fully understood. Herein, we present the study protocol for The Researching the Effectiveness of Lumbar Interventions for Enhancing Function Study (The RELIEF Study). METHODS AND STUDY DESIGN: The RELIEF Study is a Phase II RCT with a nested mechanistic design...
May 21, 2018: Contemporary Clinical Trials
https://www.readbyqxmd.com/read/29792892/beef-quality-labels-a-combination-of-sensory-acceptance-test-stated-willingness-to-pay-and-choice-based-conjoint-analysis
#10
Stephan G H Meyerding, Maria Gentz, Brianne Altmann, Lisa Meier-Dinkel
Consumer perspectives of beef quality are complex, leading to a market that is increasingly differentiating. Thus, ongoing monitoring and assessment of changes in consumer perspectives is essential to identify changing market conditions. Often only credence and search characteristics are evaluated in consumer studies; therefore the object of the present study is to examine consumer preferences and perceptions towards beef steaks, also including experience characteristics, using a mixed methods approach. For this reason, 55 consumers participated in an experiment in Germany, including a sensory acceptance test, stated willingness to pay, and choice-based conjoint analysis (CBCA)...
May 21, 2018: Appetite
https://www.readbyqxmd.com/read/29792862/the-reason-for-the-low-ca-2-sensitivity-of-thin-filaments-associated-with-the-glu41lys-mutation-in-the-tpm2-gene-is-freezing-of-tropomyosin-near-the-outer-domain-of-actin-and-inhibition-of-actin-monomer-switching-off-during-the-atpase-cycle
#11
Stanislava V Avrova, Olga E Karpicheva, Nikita A Rysev, Armen O Simonyan, Vladimir V Sirenko, Charles S Redwood, Yurii S Borovikov
The E41K mutation in TPM2 gene encoding muscle regulatory protein beta-tropomyosin is associated with nemaline myopathy and cap disease. The mutation results in a reduced Ca2+ -sensitivity of the thin filaments and in muscle weakness. To elucidate the structural basis of the reduced Ca2+ -sensitivity of the thin filaments, we studied multistep changes in spatial arrangement of tropomyosin (Tpm), actin and myosin heads during the ATPase cycle in reconstituted fibers, using the polarized fluorescence microscopy...
May 21, 2018: Biochemical and Biophysical Research Communications
https://www.readbyqxmd.com/read/29792852/is-there-a-survival-advantage-in-diagnosing-endometrial-cancer-in-asymptomatic-postmenopausal-patients-an-israeli-gynecology-oncology-group-study
#12
Ofer Gemer, Yakir Segev, Limor Helpman, Nasreen Hag-Yahia, Ram Eitan, Oded Raban, Zvi Vaknin, Sophia Leytes, Alon Ben Arie, Amnon Amit, Tally Levy, Ahmed Namazov, Michael Volodarsky, Inbar Ben Shachar, Ilan Atlas, Ilan Bruchim, Ofer Lavie
BACKGROUND: Incidental ultrasonographic findings in asymptomatic postmenopausal women, such as thickened endometrium or polyps, often lead to invasive procedures and to the occasional diagnosis of endometrial cancer. Data supporting a survival advantage of endometrial cancer diagnosed prior to the onset of postmenopausal bleeding (PMB) are lacking. OBJECTIVE: To compare the survival of endometrial cancer patients diagnosed in asymptomatic and bleeding post-menopausal patients...
May 21, 2018: American Journal of Obstetrics and Gynecology
https://www.readbyqxmd.com/read/29792834/improvement-of-esthetic-functional-and-social-well-being-after-orthognathic-surgical-intervention-a-sampling-of-postsurgical-patients-over-a-10-year-period-from-2007-to-2017
#13
Farhad Ghorbani, Hamed Gheibollahi, Saeid Tavanafar, Hamid Reza Eftekharian
PURPOSE: The objectives of this study were to evaluate the effect of orthognathic surgery on the long-term quality of life of patients who received this treatment and to delineate the common reasons for dissatisfaction. MATERIALS AND METHODS: In this retrospective cohort study, patients who underwent orthognathic surgery were studied. One hundred thirty-two patients who had undergone orthognathic surgery from 2007 to 2017 in the oral and maxillofacial surgery department participated in this study...
May 9, 2018: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29792807/micelles-protect-intact-metallo-supramolecular-block-copolymer-complexes-from-solution-to-gas-phase-during-electrospray-ionization
#14
Kai Hung Huang, Tsung-Han Tu, Shi-Cheng Wang, Yi-Tsu Chan, Cheng-Chih Hsu
Supramolecular diblock copolymers using metal-ligand coordination can be synthesized under ambient conditions by delicate design of the end groups of the homopolymer chains. However, mass spectrometric analysis of such metallo-supramolecular copolymers is challenging. One of the reasons is the nonpolarity of the polymer chains, making it hard to disperse the complexes in electrospray ionization (ESI)-friendly environments. The other difficulty is the noncovalent nature of such copolymers, which is easily disrupted during the ionization...
May 24, 2018: Analytical Chemistry
https://www.readbyqxmd.com/read/29792786/imageless-navigation-total-hip-arthroplasty-an-evaluation-of-operative-time
#15
Epaminondas Markos Valsamis, David Ricketts, Adnan Hussain, Amir-Reza Jenabzadeh
INTRODUCTION: Imageless navigation has been successfully integrated in knee arthroplasty but its effectiveness in total hip arthroplasty (THA) has been debated. It has consistently been shown that navigation adds significant time and cost to the operation. Further, the relative success of traditional hip replacements has impeded the adoption of new techniques. METHODS: We compared the operative time between fifty total hip replacements with and without the use of imageless navigation by a single senior surgeon in a retrospective study...
2018: SICOT-J
https://www.readbyqxmd.com/read/29792675/electron-phonon-coupling-and-resonant-relaxation-from-1d-and-1p-states-in-pbs-quantum-dots
#16
Eric R Kennehan, Grayson S Doucette, Ashley R Marshall, Christopher Grieco, Kyle T Munson, Matthew C Beard, John B Asbury
Observations of the hot-phonon bottleneck, which is predicted to slow the rate of hot carrier cooling in quantum confined nanocrystals, have been limited to date for reasons that are not fully understood. We used time-resolved infrared spectroscopy to directly measure higher energy intraband transitions in PbS colloidal quantum dots. Direct measurements of these intraband states permitted detailed analysis of the electronic overlap of the quantum confined states that may influence their relaxation processes...
May 24, 2018: ACS Nano
https://www.readbyqxmd.com/read/29792558/epidemiologic-features-and-intervention-effect-of-fall-injury-among-rural-school-aged-children-in-southwest-china-a-short-term-cohort-study
#17
Xiuquan Shi, Tao Wang, Chan Nie, Haiyan Wang, Lirong Luo, Yonghong Qi, Zhixia Jiang
Falls are the top one type in all unintentional injuries. In this study, we aim to explore the epidemiological characteristics of falls and assess the intervention effect. Our research had interviewed 2854 rural children in southwest China. Then, we used School-Family-Individual (SFI) comprehensive education model to conduct an intervention among 1506 children and follow up them for one year. The changes in injury knowledge and incidence rate before and after intervention were compared. We found the fall injury was 37...
May 24, 2018: International Journal of Injury Control and Safety Promotion
https://www.readbyqxmd.com/read/29792528/dissociation-of-cerebrospinal-fluid-amyloid-%C3%AE-and-tau-levels-in-patients-with-prolonged-posttraumatic-disorders-of-consciousness
#18
Sergio Bagnato, Maria Andriolo, Cristina Boccagni, Antonino Sant'Angelo, Maria Enza D'Ippolito, Giuseppe Galardi
BACKGROUND: Traumatic brain injury (TBI) is a major risk factor for Alzheimer's disease (AD). Although the mechanisms that lead to AD after a TBI are unclear, we hypothesize that changes in amyloid-β (Aβ) metabolism and abnormal tau phosphorylation are reasonable candidates. OBJECTIVE: To investigate Aβ and tau dynamics in the chronic phase of TBI. METHODS: We evaluated Aβ1-42 , total tau (t-tau), and phosphorylated tau (p-tau) levels in the cerebrospinal fluid (CSF) of 15 patients who developed a prolonged disorder of consciousness after a severe TBI (mean time from TBI 271...
May 24, 2018: Brain Injury: [BI]
https://www.readbyqxmd.com/read/29792490/generalizability-of-a-traditional-social-cognitive-model-of-prosocial-behaviors-to-u-s-latino-a-youth
#19
Gustavo Carlo, Cara Streit, Lisa Crockett
OBJECTIVES: We hypothesized that parental and peer support, empathy-related traits, and prosocial moral reasoning would positively predict altruistic prosocial behaviors, and negatively predict selfish-motivated prosocial behaviors, in U.S. Latino youth. METHOD: Three-hundred and 6 U.S. Latina/o adolescents (M age = 15.50 years; SD = .42 years; 46% girls; 81.0% self-identified as U.S. Mexican) from communities in the Northern Great Plains completed measures of parental and peer support, perspective taking and empathic concern, prosocial moral reasoning, and two types of prosocial behaviors...
May 24, 2018: Cultural Diversity & Ethnic Minority Psychology
https://www.readbyqxmd.com/read/29792424/comprehensive-investigation-into-luminescent-properties-of-ir-iii-complexes-an-integrated-computational-study-of-radiative-and-nonradiative-decay-processes
#20
Yu Wang, Peng Bao, Jian Wang, Ran Jia, Fu-Quan Bai, Hong-Xing Zhang
A comprehensive and concrete exploration into the deactivation mechanisms of luminescent materials is imperative, with the improvement of simulating and computing technology. In this study, an integrated calculation scheme is employed on five Ir(III) complexes for thorough investigation of their photophysical properties, including radiative ( kr ) and nonradiative ( knr ) decay rates. As a most famous Ir(III) complex with superior quantum efficiency, fac-Ir(ppy)3 herein serves as a reference relative to the other four β-diketonate complexes...
May 24, 2018: Inorganic Chemistry
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