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Chivon H Fitch, Zavin Nazaretian, Devon Himmel
BACKGROUND: Since Braithwaite advanced reintegrative shaming theory about 25 years ago, the theory has almost invariably been retested only in relation to predatory offending. Few studies have tested the relevance of the theory for non-predatory offending. AIM: This study aims to explore the utility of reintegrative shaming theory in explaining non-predatory crimes. Our main research question was: is acknowledgement of shame apportioned by others associated with reduction in non-predatory offending? METHODS: We used zero-inflated negative binomial modelling to analyse data from a national, longitudinal, population-based study of 1,726 adolescents...
March 8, 2018: Criminal Behaviour and Mental Health: CBMH
Vasiliki Vivian Iliadou, Martin Ptok, Helen Grech, Ellen Raben Pedersen, André Brechmann, Naïma Deggouj, Christiane Kiese-Himmel, Mariola S Liwin Ska-Kowalska, Andreas Nickisch, Laurent Demanez, Evelyne Veuillet, Hung Thai-Van, Tony Sirimanna, Marina Callimachou, Rosamaria Santarelli, Sandra Kuske, Jose Juan Barajas de Prat, Mladen Hedever, Ozlem Konukseven, Dorothy Veraguth, Tone Stokkereit Mattsson, Jorge Humberto Martins, Doris-Eva Bamiou
No abstract text is available yet for this article.
February 28, 2018: International Journal of Audiology
Brent W Miller, Rainer Himmele, Dixie-Ann Sawin, Jeeseon Kim, Robert J Kossmann
BACKGROUND/AIM: Home hemodialysis (HHD) has been associated with improved clinical outcomes vs. in-center HD (ICHD). The prevalence of HHD in the United States is still very low at 1.8%. This critical review compares HHD and ICHD outcomes for survival, hospitalization, cardiovascular (CV), nutrition, and quality of life (QoL). METHODS: Of 545 publications identified, 44 were not selected after applying exclusion criteria. A systematic review of the identified publications was conducted to compare HHD to ICHD outcomes for survival, hospitalization, CV outcomes, nutrition, and QoL...
January 26, 2018: Blood Purification
Hans-Jörg Himmel, Olaf Hübner
Metal cluster models are of high relevance for establishing new mechanistic concepts for heterogeneous catalysis. The high reactivity and particular selectivity of metal clusters is caused by the wealth of low-lying electronically excited states that are often thermally populated. Thereby the metal clusters are flexible with regard to its electronic structure and can adjust their states to be appropriate for the reaction with a particular substrate. The matrix isolation technique is ideally suited for studying excited state reactivity...
February 19, 2018: Chemistry: a European Journal
Andreas Nickisch, Franziska Werner, Christiane Kiese-Himmel
OBJECTIVE: In a controlled group comparison it was shown for 2nd, 3th and 4th graders that children with auditory processing disorders (APD) could be distinguished from those without (Non-APD) by three to four diagnostic tools. The hit rate was 93.6 % resp. 97.5 % 1, 2. The current study investigated whether such a separation is also possible in first graders. MATERIAL AND METHODS: Performance of 77 first graders in two clinically and diagnostically confirmed groups (n = 40 with APD, mean age: 6...
February 15, 2018: Laryngo- Rhino- Otologie
Thomas Grimmsmann, Markus Harden, Thomas Fiß, Wolfgang Himmel
BACKGROUND AND OBJECTIVES: Hospitalisation influences drug therapy in ambulatory care and this influence is generally negatively perceived. The few studies that have explored changes in benzodiazepine or sleep medication use as a function of hospitalisation failed to precisely determine the hospital's role in initiating, continuing and discontinuing these drugs on a valid basis. The aim of the study was to ascertain the overall influence of hospitalisation on the prescription of benzodiazepines and Z-drugs in outpatient care with a special focus on the role of different hospital departments and drug classes...
February 14, 2018: Swiss Medical Weekly
Roman Brunecky, Daehwan Chung, Nicholas S Sarai, Neal Hengge, Jordan F Russell, Jenna Young, Ashutosh Mittal, Patthra Pason, Todd Vander Wall, William Michener, Todd Shollenberger, Janet Westpheling, Michael E Himmel, Yannick J Bomble
Background: Thermophilic microorganisms and their enzymes offer several advantages for industrial application over their mesophilic counterparts. For example, a hyperthermophilic anaerobe, Caldicellulosiruptor bescii, was recently isolated from hot springs in Kamchatka, Siberia, and shown to have very high cellulolytic activity. Additionally, it is one of a few microorganisms being considered as viable candidates for consolidated bioprocessing applications. Moreover, C. bescii is capable of deconstructing plant biomass without enzymatic or chemical pretreatment...
2018: Biotechnology for Biofuels
Julian Horn, Anna Widera, Sebastian Litters, Elisabeth Kaifer, Hans-Jörg Himmel
Diborane(4) compounds are versatile reagents in synthetic chemistry. Generally, diboranes(4) with sp2-hybridized boron atoms react as electrophiles. By contrast, the chemistry of nucleophilic diborane(4) compounds with two sp3-hybridized boron atoms is very much underdeveloped. In this work, we systematically vary the substituents of electron-rich diborane(4) compounds with bridging guanidinate substituents. In this way, five new diboranes are synthesized and fully characterized. Using quantum chemical computations, we show that the electronic properties and reactivity of these compounds can be rationally varied by the choice of substituents...
January 18, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
Anna S Borisova, Elena V Eneyskaya, Suvamay Jana, Silke F Badino, Jeppe Kari, Antonella Amore, Magnus Karlsson, Henrik Hansson, Mats Sandgren, Michael E Himmel, Peter Westh, Christina M Payne, Anna A Kulminskaya, Jerry Ståhlberg
Background: The ascomycete fungus Trichoderma reesei is the predominant source of enzymes for industrial conversion of lignocellulose. Its glycoside hydrolase family 7 cellobiohydrolase (GH7 CBH) TreCel7A constitutes nearly half of the enzyme cocktail by weight and is the major workhorse in the cellulose hydrolysis process. The orthologs from Trichoderma atroviride (TatCel7A) and Trichoderma harzianum (ThaCel7A) show high sequence identity with TreCel7A, ~ 80%, and represent naturally evolved combinations of cellulose-binding tunnel-enclosing loop motifs, which have been suggested to influence intrinsic cellobiohydrolase properties, such as endo-initiation, processivity, and off-rate...
2018: Biotechnology for Biofuels
Andreas Ermantraut, Valentin Radtke, Niklas Gebel, Daniel Himmel, Thorsten Koslowski, Ivo Leito, Ingo Krossing
An important intermediate goal to evaluate our concept for the assumption-free determination of single ion Gibbs transfer energies ΔtrG°(i, S1 > S2) is presented: We executed the crucial steps a) and b) of the methodology, described in Part I of this treatise, exemplarily for Ag+ and Cl- with S1 being water and S2 being acetonitrile. The experiments showed that virtually all parts of the liquid junction potentials (LJPs) at both ends of a salt bridge cancel, if the bridge electrolyte is an "ideal" ionic liquid - one with nearly identical diffusion of anion and cation...
December 13, 2017: Angewandte Chemie
Valentin Radtke, Andreas Ermantraut, Daniel Himmel, Thorsten Koslowski, Ivo Leito, Ingo Krossing
We describe a procedure for the thermodynamically rigorous, experimental determination of the Gibbs Energy of Transfer of single ions between solvents. The method is based on potential difference measurements between two electrochemical half cells with different solvents connected by an ideal Ionic Liquid Salt Bridge (ILSB). We discuss the specific requirements for the IL with regard to the procedure, ensuring that the Liquid Junction Potentials (LJP) at both ends of the ILSB cancel largely. The remaining parts of the LJPs can be determined by separate emf measurements...
December 13, 2017: Angewandte Chemie
Antonella Amore, Brandon C Knott, Nitin T Supekar, Asif Shajahan, Parastoo Azadi, Peng Zhao, Lance Wells, Jeffrey G Linger, Sarah E Hobdey, Todd A Vander Wall, Todd Shollenberger, John M Yarbrough, Zhongping Tan, Michael F Crowley, Michael E Himmel, Stephen R Decker, Gregg T Beckham, Larry E Taylor
In nature, many microbes secrete mixtures of glycoside hydrolases, oxidoreductases, and accessory enzymes to deconstruct polysaccharides and lignin in plants. These enzymes are often decorated with N- and O-glycosylation, the roles of which have been broadly attributed to protection from proteolysis, as the extracellular milieu is an aggressive environment. Glycosylation has been shown to sometimes affect activity, but these effects are not fully understood. Here, we examine N- and O-glycosylation on a model, multimodular glycoside hydrolase family 7 cellobiohydrolase (Cel7A), which exhibits an O-glycosylated carbohydrate-binding module (CBM) and an O-glycosylated linker connected to an N- and O-glycosylated catalytic domain (CD)-a domain architecture common to many biomass-degrading enzymes...
December 26, 2017: Proceedings of the National Academy of Sciences of the United States of America
Roman Brunecky, Markus Alahuhta, Deanne W Sammond, Qi Xu, Mo Chen, David B Wilson, John W Brady, Michael E Himmel, Yannick J Bomble, Vladimir V Lunin
Glycoside hydrolase (GH) family 48 is an understudied and increasingly important exoglucanase family found in the majority of bacterial cellulase systems. Moreover, many thermophilic enzyme systems contain GH48 enzymes. Deletion of GH48 enzymes in these microorganisms results in drastic reduction in biomass deconstruction. Surprisingly, given their importance for these microorganisms, GH48s have intrinsically low cellulolytic activity but even in low ratios synergize greatly with GH9 endoglucanases. In this study, we explore the structural and enzymatic diversity of these enzymes across a wide range of temperature optima...
2017: Biotechnology for Biofuels
Yining Zeng, Michael E Himmel, Shi-You Ding
Understanding plant cell wall cross-linking chemistry and polymeric architecture is key to the efficient utilization of biomass in all prospects from rational genetic modification to downstream chemical and biological conversion to produce fuels and value chemicals. In fact, the bulk properties of cell wall recalcitrance are collectively determined by its chemical features over a wide range of length scales from tissue, cellular to polymeric architectures. Microscopic visualization of cell walls from the nanometer to the micrometer scale offers an in situ approach to study their chemical functionality considering its spatial and chemical complexity, particularly the capabilities of characterizing biomass non-destructively and in real-time during conversion processes...
2017: Biotechnology for Biofuels
Nathan Kruer-Zerhusen, Markus Alahuhta, Vladimir V Lunin, Michael E Himmel, Yannick J Bomble, David B Wilson
Background: Auxiliary activity (AA) enzymes are produced by numerous bacterial and fungal species to assist in the degradation of biomass. These enzymes are abundant but have yet to be fully characterized. Here, we report the X-ray structure of Thermobifida fusca AA10A (TfAA10A), investigate mutational characterization of key surface residues near its active site, and explore the importance of the various domains of Thermobifida fusca AA10B (TfAA10B). The structure of TfAA10A is similar to other bacterial LPMOs (lytic polysaccharide monooxygenases), including signs of photo-reduction and a distorted active site, with mixed features showing both type I and II copper coordination...
2017: Biotechnology for Biofuels
Michael E Himmel, Charles A Abbas, John O Baker, Edward A Bayer, Yannick J Bomble, Roman Brunecky, Xiaowen Chen, Claus Felby, Tina Jeoh, Rajeev Kumar, Barry V McCleary, Brett I Pletschke, Melvin P Tucker, Charles E Wyman, Stephen R Decker
In the shadow of a burgeoning biomass-to-fuels industry, biological conversion of lignocellulose to fermentable sugars in a cost-effective manner is key to the success of second-generation and advanced biofuel production. For the effective comparison of one cellulase preparation to another, cellulase assays are typically carried out with one or more engineered cellulase formulations or natural exoproteomes of known performance serving as positive controls. When these formulations have unknown composition, as is the case with several widely used commercial products, it becomes impossible to compare or reproduce work done today to work done in the future, where, for example, such preparations may not be available...
2017: Biotechnology for Biofuels
Vasiliki Vivian Iliadou, Martin Ptok, Helen Grech, Ellen Raben Pedersen, André Brechmann, Naïma Deggouj, Christiane Kiese-Himmel, Mariola Śliwińska-Kowalska, Andreas Nickisch, Laurent Demanez, Evelyne Veuillet, Hung Thai-Van, Tony Sirimanna, Marina Callimachou, Rosamaria Santarelli, Sandra Kuske, Jose Barajas, Mladen Hedjever, Ozlem Konukseven, Dorothy Veraguth, Tone Stokkereit Mattsson, Jorge Humberto Martins, Doris-Eva Bamiou
Current notions of "hearing impairment," as reflected in clinical audiological practice, do not acknowledge the needs of individuals who have normal hearing pure tone sensitivity but who experience auditory processing difficulties in everyday life that are indexed by reduced performance in other more sophisticated audiometric tests such as speech audiometry in noise or complex non-speech sound perception. This disorder, defined as "Auditory Processing Disorder" (APD) or "Central Auditory Processing Disorder" is classified in the current tenth version of the International Classification of diseases as H93...
2017: Frontiers in Neurology
Inken Arnold, Kati Straube, Wolfgang Himmel, Stephanie Heinemann, Vivien Weiss, Laura Heyden, Eva Hummers-Pradier, Roland Nau
BACKGROUND: Many elderly patients receive psychotropic drugs. Treatment with psychotropic agents is associated with serious side effects including an increased risk of falls and fractures. Several psychotropic drugs are considered potentially inappropriate for treatment of the elderly. METHODS: A retrospective chart review was conducted covering all patients aged ≥ 65 years who were admitted to Evangelisches Krankenhaus Göttingen-Weende between 01/01/2013 and 03/31/2013...
December 4, 2017: BMC Pharmacology & Toxicology
Benjamin Fiedler, Daniel Himmel, Ingo Krossing, Joachim Friedrich
We present a new implementation of the template localization for the fully automated and parallizable incremental method, which excludes failures of this important step within the domain-specific basis set approach and thus ensures a higher reliability of the scheme, preserving its very high accuracy. Furthermore, we combine our method with an efficient focal-point ansatz to reach the complete basis set limit and carefully assess this approach for the first time with regard to reaction energies. For a test set of 51 reactions the incremental focal-point method with a basis set of moderate size provides a very high accuracy with respect to the complete basis set limit...
February 13, 2018: Journal of Chemical Theory and Computation
Daniel Himmel, Valentin Radtke, Burkhard Butschke, Ingo Krossing
We report on a unified view on Brønsted acidity introduced by our group in this journal in 2010, its perception in the view of a synthetic/materials chemist contrasted by that of a physical or a theoretical chemist, and the discrepancy between both views. For this purpose, we provide a brief overview of the concepts acidity, acid strengths, and pH value, including problems, proposed solutions, and the pH_abs/pH_abs^H2O scale as a unifying concept developed in our group. Thereafter, we give some examples for accessibility and applications of unified pH_abs values...
November 24, 2017: Angewandte Chemie
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