bluuebunny/crossref_metadata_2025_split huggingface dataset:
Review on Electromagnetic Stimulation of Alive Tissues
Authors: Drosu Oana , Stanculescu Marilena 
Published: November 2016

Abstract
The electric, magnetic or electromagnetic phenomena that occur in the biological tissues include: the behavior of excitable tissue (the sources), the electric currents and potentials in the volume conductor, the magnetic field at and beyond the body, the response of excitable cells to electric and magnetic field stimulation (through changes in their electrical activity, changes of chemical transport through cell membrane); the intrinsic electric and magnetic properties of the tissue. This paper presents an overview of fundamental phenomena occurring in the application of stimuli with a future purpose of focusing on several models of external electromagnetic stimulation. The target is to create models of the electroconductive anatomy of some alive tissues will be proposed, in order to investigate the fields and the currents generated by the on-set of an electric field (in the first case) or a time-variant magnetic field (in the second case) or the superposition of the two types of stimuli.
Pollen contamination and nonrandom mating in a Eucalyptus camaldulensis Dehnh seedling seed orchard
Authors: Gonzaga J. M. S. , Manoel R. O. , Sousa A. C. B. , Souza A. P. , Moraes M. L. T. , Freitas M. L. M. , Sebbenn A. M. 
Published: November 2016

Abstract

Eucalyptus camaldulensis has potential for timber, energy, pulp and cellulose production in Brazil due to its ability to adapt to a variety of environmental conditions. The use of improved seeds, selected for economic growth traits, is necessary to increase productivity of commercial stands. Seed seedlings orchards (SSO) are one option for improved seed production. However, pollen contamination from unimproved populations, as well as non-random mating in the SSO, can decrease the predicted genetic gains in selected populations. Thus, we investigate the mating system, pollen flow and dispersal patterns in an E. camaldulensis SSO and progeny test (PT), established with seedlings collected in the SSO, using seven microsatellite loci. All trees in the SSO were mapped, sampled, and genotyped. For the PT, we sampled, genotyped, and measured the total height of seedlings from 25 families. We detected 10 % inbreeding in the PT, resulting mainly from selfing. Furthermore, we found a correlated mating rate of 18.5 % in the SSO, indicating that within the PT there are some full-sibs. Using paternity analysis, we found 14.7 % pollen contamination and a pattern of pollen dispersal between near neighbor trees in the SSO. We found 9.5 % of inbreeding depression for seedlings height. Due to pollen contamination and nonrandom mating in the SSO, the actual genetic gains for growth traits in the PT are probably lower than the predicted genetic gains. We discuss some management strategies in the SSO that can be used to increase genetic gains in commercial reforestation established using seeds collected from the SSO
Large deformation finite element analysis of undrained pile installation
Authors: Konkol Jakub , Bałachowski Lech 
Published: November 2016

Abstract
In this paper, a numerical undrained analysis of pile jacking into the subsoil using Abaqus software suit has been presented. Two different approaches, including traditional Finite Element Method (FEM) and Arbitrary Lagrangian–Eulerian (ALE) formulation, were tested. In the first method, the soil was modelled as a two-phase medium and effective stress analysis was performed. In the second one (ALE), a single-phase medium was assumed and total stress analysis was carried out. The fitting between effective stress parameters and total stress parameters has been presented and both solutions have been compared. The results, discussion and verification of numerical analyzes have been introduced. Possible applications and limitations of large deformation modelling techniques have been explained.
Magneto-rotatory compressible couple-stress fluid heated from below in porous medium
Authors: Mehta Chander Bhan 
Published: November 2016

Abstract
The study is aimed at analysing thermal convection in a compressible couple stress fluid in a porous medium in the presence of rotation and magnetic field. After linearizing the relevant equations, the perturbation equations are analysed in terms of normal modes. A dispersion relation governing the effects of rotation, magnetic field, couple stress parameter and medium permeability have been examined. For a stationary convection, the rotation postpones the onset of convection in a couple stress fluid heated from below in a porous medium in the presence of a magnetic field. Whereas, the magnetic field and couple stress postpones and hastens the onset of convection in the presence of rotation and the medium permeability hastens and postpones the onset of convection with conditions on Taylor number. Further the oscillatory modes are introduced due to the presence of rotation and the magnetic field which were non-existent in their absence, and hence the principle of exchange stands valid. The sufficient conditions for nonexistence of over stability are also obtained.
Effect of increasing mining rate on longwall coal mining – Western donbass case study
Authors: Sdvyzhkova Olena , Patyńska Renata 
Published: November 2016

Abstract
This paper presents the problems associated with the rapid change of the rock stress-strain state in terms of increasing the rate of coal mining. Parameters of the roof collapse are determined depending on the rate of a longwall advancing under conditions of poor rocks. Statistical data are processed to obtain a general trend concerning the mining rate impact on the roof collapse. The statistical strength theory is applied to explain the increase in mined-out space and the size of hanging roof behind a coal face. Numerical simulation is carried out to determine a critical size of mined-out space that provokes a roof collapse. The area of yielded rocks is outlined using the criterion developed taking into account the rate of longwall advancing. A general regularity is obtained to determine the roof collapse parameters. The developed technics gives a possibility to predict the moment of general roof collapse at the initial stage of longwalling to prevent the negative effect of the rapid stress redistribution provoking joints propagation and intensive gas release. The estimation of the rock stress-strain state considering the rate of mining operations can be useful for tasks related to a new technology implementation. The statistical strength theory and failure criterion applied together provides adequate planning of mining activities and the assessment of natural hazards.
Impact of Rehabilitation on Health Related Quality of Life in Patients with Hip Osteoarthritis
Authors: Divjak Ana , Aleksic Dejan , Ilic Katarina Parezanovic 
Published: November 2016

AbstractHip osteoarthritis (OA) is a degenerative, progressive musculoskeletal system disease in adult individuals. Both genders demonstrate a similar prevalence at 11.5% for men and 11.6% for women. During the initial stage of hip OA, conservative treatments may significantly decrease pain, provide functional improvement and enhance health related quality of life (HRQoL).The aims of the study were to evaluate the quality of life of patients with hip osteoarthritis and to estimate the impact of a comprehensive rehabilitation intervention on their HRQoL.This was a prospective, observational study of 50 consecutive patients with hip osteoarthritis who were referred to an outpatient rehabilitation intervention. To assess their HRQoL before and after rehabilitation, we used the SF-36 and the Lequesne index for hip OA.The mean age was 61.7±8.3 years, and 56% of the patients were women. After rehabilitation, the SF-36 RE and RP subscales and the Lequesne pain subscale showed the most significant improvement, although all of the SF-36 and Lequesne domains showed significant improvement. Before rehabilitation, the Lequesne ADL subscale was most correlated with the SF-36 PF subscale (rho=−0.908). After rehabilitation, the total Lequesne score was highly correlated with the SF-36 PF subscale (rho=−0.895). Age, education and the duration of disease were significantly correlated with all of the Lequesne subscales before and after rehabilitation.This study showed that patients with hip osteoarthritis had a substantially low HRQoL, but all health dimensions showed statistically significant improvements after outpatient rehabilitation intervention.
Vitamin D Deficiency and its Importance - A Global Problem of Today, Realistic or Not?
Authors: Milovanović Olivera Z. 
Published: November 2016

Abstract
Vitamin D, also known as the “sun vitamin” in the literature, has been examined for many years and still arouses researchers’ interest due to the pleiotropic effects achieved in the human body. Because of the influence on mineral homeostasis, the initially observed effects of vitamin D on the prevention and treatment of rickets, have now been extended to a large number of diseases with different aetiologies such as cardiovascular, autoimmune, endocrine, infectious, neurological, malignant and other diseases. Due to the large number of experimental studies in animals and humans, we have exact information about the role of vitamin D in many of these conditions. Reaching an adequate level of 25(OH)D in the human body is a basic requirement for the realization of these effects; 25(OH)D is a metabolic product that reflects the vitamin D status but that does not have any biological activity. The biological activities of vitamin D can occur only after the formation of a second metabolic product, 1,25(OH)2D, in the kidneys. The three main sources of acquiring vitamin D are through food, skin and supplementation. Food is not a rich source of vitamin D; it is clear that the most important influences to achieve an optimal vitamin D status in the human body are vitamin D synthesis at the skin and adequate supplementation intake. An alarming fact is that vitamin D deficiency is detected in an increasing number of people from one day to another in the general world population and that this condition has pandemic dimensions. Introducing the beneficial effects and sources of vitamin D to the general population and to medical experts with adequate supplementation regime can decrease the number of people who are vitamin D deficient.
Burnout, Depression and Proactive Coping in Underground Coal Miners in Serbia - Pilot Project
Authors: Manić Saška , Janjic Vladimir , Dejanovic Slavica Djukic , Aleksic Aleksandar , Aleksic Zeljka , Jaredic Biljana , Krkic Mirjana 
Published: November 2016

Abstract
Mining is unsurprisingly considered a high-risk occupation because it involves continuous hard labour under highly demanding and stressful conditions. Many of these work stressors can impair individuals’ well-being in both a physiological and psychological sense. The aims of this study were to assess the prevalence of burnout and depressive symptoms and to evaluate aspects of proactive coping among underground coal miners in Serbia. The study involved 46 male underground coal miners. Burnout was measured with the Copenhagen Burnout Inventory, depression was assessed with the Patient Health Questionnaire-9, and level of proactive coping was measured with the Proactive Coping Inventory. The results showed a low level of burnout syndrome among the underground coal miners (12.46±4.879). Depression was slightly above the minimum (1.2±2.094), and the majority of the participants had no symptoms of depression (93.5%). Overall, the underground coal miners’ ability to proactively cope with work stress was very good (42.17±6.567). This is in contrast to the findings of the few previous international studies and is a good basis for further research using a larger sample in Serbia.
The Prevalence of Physical and Psychological Abuse and its Correlation with Depressive and Anxiety Symptoms among Students
Authors: Vukomanovic Ivana Simic , Kocic Sanja , Radevic Svetlana , Radovanovic Snezana , Vasiljevic Dragan , Djordjevic Vladimir , Dejanovic Slavica Djukic 
Published: November 2016

Abstract
Abuse in younger populations has been an issue of growing concern globally since youth already face various life situations that can heighten the occurrence of depression and anxiety disorders. The aim of this study was to determine the prevalence of physical and psychological abuse and its correlation with depressive and anxiety symptoms among students.
This research was conducted as an epidemiological study of a sample of 1,940 university students using a standardized questionnaire by the World Health Organization. The survey, in addition to questions related to the abuse of youth, also included the Beck Depression Inventory and Beck Anxiety Inventory.
Based on the results of this study, psychological abuse had a prevalence of 17.1%, while the prevalence of physical abuse was approximately 1.8%. Depressive symptoms were significantly related to physical (p<0.001) and psychological abuse (p<0.005), and anxiety symptoms were also significantly related to both physical (p=0.003) and psychological abuse (p<0.005).
The results of this study indicated the importance of the early detection of abuse and depressive and anxiety symptoms among university students, which is essential for mental health promotion and the prevention of mental disorders.
Henoch-Schönlein Purpura Nephritis in Children: Prognosis and Treatment Experiences
Authors: Vujic Ana , Knezevic Jasmina , Igrutinovic Zoran , Jankovic Sveta 
Published: November 2016

Abstract
Henoch-Schönlein purpura is a type of systemic small vessel vasculitis. The dominant manifestation is the cutaneous component, the illness is self-limiting in nature, and the prognosis and outcome depend mostly on renal manifestations. We analysed the associations among clinical and laboratory parameters with the prognosis and outcome of HSP in children hospitalised at the Paediatrics clinic, Clinical Centre, Kragujevac between January 2011 and January 2012. Children who developed nephritis were older on average and all manifested with arthritis, abdominal complaints, microhaematuria, elevated D-dimer levels in the serum, and significant proteinuria and microalbuminuria (≥ 300 mg/L), and two children had pre-existing allergic conditions. All three children with repeatedly positive proteins in the morning sample urine test had significant proteinuria (≥0,5 g/24 h) and microalbuminuria (≥ 300 mg/L). These children had more bursts of rash and more severe and lasting abdominal pain and arthritis compared to children with normal urine tests. They were therefore treated with glucocorticoids and an angiotensin-converting enzyme inhibitor. The glomerular filtration rate measured by determining creatinine clearance was normal in all patients. These patients were diagnosed with Henoch-Schönlein purpura nephritis, and their condition was regularly monitored. Analysis of this group of patients demonstrated that the average age of 8 years and abdominal complaints were indicative of nephritis development.. Because both of these parameters are easily noted at disease onset, we suggest careful monitoring of disease course in these children.
Emergency or Delayed Surgical Treatment of Unstable Supracondylar Humeral Fractures in Children?
Authors: Stefanovic Branko , Vukasinovic Zoran , Stankovic Srbobran , Jeremic Jovana , Jeremic Nevena , Stojic Isidora 
Published: November 2016

AbstractSupracondylar humeral fractures (SCHF) are the most common elbow fractures in children, representing 3% of all paediatric fractures. Treatment options for SCHF in children are based on the Gartland classification. Treatment of non-displaced fractures (type I) is non-operative. Plaster immobilization for 3 to 4 weeks is recommended, depending on the age of the child and fracture healing. Treatments of displaced supracondylar fractures (type II and III) of the humerus in children are still undefined in clinical practice. Because of divided opinions, the aim of this study was to evaluate whether delayed or immediate surgical treatment has an advantage in the treatment of supracondylar fractures in children. This is a prospective – retrospective clinical study. This study included 64 patients from 5 to 15 years old; 47 (73.4%) were boys and 17 (26.6%) were girls. The most common age range (59.4%) in this study was 5-8 years old. All patients were diagnosed with supracondylar fractures at the Institute for Orthopaedic Surgery “Banjica”. We analysed 17 parameters, which were obtained either from direct patient interviews or from their medical history. All patients were divided into two groups with matched characteristics. Group I consisted of 26 patients who had immediate operations. Group II consisted of 38 patients who had delayed operations.Based on the results of the analysed parameters, consisting primarily of functional results, the absence of subjective symptoms and myositis ossificans one year after surgery suggests that emergency surgical treatment of displaced supracondylar humeral fractures is optimal.
Quality of Life in Primary Insomnia: Three-week Treatment With Zolpidem Vs. Lorazepam
Authors: Janjic Vladimir , Radmanovic Branimir , Bukumiric Zoran , Dejanovic Slavica Djukic , Muric Nemanja , Borovcanin Milica 
Published: November 2016

Abstract
Insomnia is a condition of inadequate quality or quantity of sleep that has extremely adverse effects on daytime activities. Th e aim of this study was to compare the quality of life in patients with primary insomnia before and after a 3-week treatment with lorazepam (n=20) and zolpidem (n=21) and to compare the potential differences in dysfunctional beliefs and attitudes regarding patients’ sleep between the two groups. Th e diagnosis of primary insomnia was established using the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition, Text Revision criteria, and patients had to complete a specially designed sleep log every day; on scheduled visits, we also administered a Visual Analogue Scale for quality of life and a self-evaluation questionnaire about Dysfunctional Beliefs and Attitudes related to Sleep at the beginning and end of this study. In summary, the examinees in our study had significantly decreased parameters of quality of life, quite lower than expected based on previous findings in this area. However, by the end of the study, quality of life significantly improved with treatment: it improved by approximately 2/3 in the Lorazepam group and more than twice in the Zolpidem group, with a significant difference in favour of Zolpidem (p=0.047). Th is finding is most likely a consequence of its better safety profile and in part its better efficiency in terms of influence on certain domains of sleep itself, as previously discussed. Further specialized studies in this area with larger samples and a more detailed methodology are clearly warranted.
Effect of Dehydrated Trehalose Matrix on the Kinetics of Forward Electron Transfer Reactions in Photosystem I
Authors: Shelaev Ivan , Gorka Michael , Savitsky Anton , Kurashov Vasily , Mamedov Mahir , Gostev Fedor , Möbius Klaus , Nadtochenko Victor , Golbeck John , Semenov Alexey 
Published: November 2016

AbstractThe effect of dehydration on the kinetics of forward electron transfer (ET) has been studied in cyanobacterial photosystem I (PS I) complexes in a trehalose glassy matrix by time-resolved optical and EPR spectroscopies in the 100 fs to 1 ms time domain. The kinetics of the flash-induced absorption changes in the subnanosecond time domain due to primary and secondary charge separation steps were monitored by pump–probe laser spectroscopy with 20-fs low-energy pump pulses centered at 720 nm. The back-reaction kinetics of P700were measured by high-field time-resolved EPR spectroscopy and the forward kinetics ofA1A•−/A1B•−→FX${\rm{A}}_{{\rm{1A}}}^{ \bullet - }/{\rm{A}}_{1{\rm{B}}}^{ \bullet - } \to {{\rm{F}}_{\rm{X}}}$by time-resolved optical spectroscopy at 480 nm. The kinetics of the primary ET reactions to form the primaryP700•+A0•−${\rm{P}}_{700}^{ \bullet + }{\rm{A}}_0^{ \bullet - }$and the secondaryP700•+A1•−${\rm{P}}_{700}^{ \bullet + }{\rm{A}}_1^{ \bullet - }$ion radical pairs were not affected by dehydration in the trehalose matrix, while the yield of theP700•+A1•−${\rm{P}}_{700}^{ \bullet + }{\rm{A}}_1^{ \bullet - }$was decreased by ~20%. Forward ET from the phylloquinone molecules in theA1A•−${\rm{A}}_{1{\rm{A}}}^{ \bullet - }$andA1B•−${\rm{A}}_{1{\rm{B}}}^{ \bullet - }$sites to the iron–sulfur cluster FXslowed from ~220 ns and ~20 ns in solution to ~13 μs and ~80 ns, respectively. However, as shown by EPR spectroscopy, the ~15 μs kinetic phase also contains a small contribution from the recombination betweenA1B•−${\rm{A}}_{1{\rm{B}}}^{ \bullet - }$andP700•+.${\rm{P}}_{700}^{ \bullet + }.$These data reveal that the initial ET reactions from P700to secondary phylloquinone acceptors in the A- and B-branches of cofactors (A1Aand A1B) remain unaffected whereas ET beyond A1Aand A1Bis slowed or prevented by constrained protein dynamics due to the dry trehalose glass matrix.
Coordination of the Mn4+-Center in Layered Li[Co0.98Mn0.02]O2 Cathode Materials for Lithium-Ion Batteries
Authors: Jakes Peter , Kröll Leonard , Ozarowski Andrew , Tol Johan van , Mikhailova Daria , Ehrenberg Helmut , Eichel Rüdiger-A. 
Published: November 2016

Abstract
The local coordination of the manganese in Li[Co0.98Mn0.02]O2 cathode materials for lithium-ion batteries has been investigated by means of a joint XRD and multi-frequency electron paramagnetic resonance (EPR) characterization approach. EPR showed the manganese being in a tetravalent high-spin Mn4+-oxidation state with

S
=

3
2

.

$S = {3 \over 2}.$

The set of spin-Hamiltonian parameters obtained from the multi-frequency EPR analysis with Larmor frequencies ranging between 9.4 and 406 GHz is transformed into structural information by means of the recently introduced Monte-Carlo Newman-superposition modeling. Based on this analysis, the Mn4+ are shown being incorporated for the Co3+-sites, i.e. acting as donor-type functional centers

Mn

Co

•

${\rm{Mn}}_{{\rm{Co}}}^ \bullet $

. In that respect, for Mn4+ the negative sign of the axial second-order fine-structure interaction parameter

B
2
0

$B_2^0$

is indicative of an elongated oxygen octahedron in its first coordination sphere, whereas

B
2
0

>
0

$B_2^0 > 0$

rather points to a compressed octahedron coordinated about the Mn4+-centers. Furthermore, the results obtained here suggest that the oxygen octahedron about the Mn4+-ion is slightly distorted as compared to the CoO6 octahedron. Concerning the coordination to next-nearest neighbor ions, part of the manganese resides in manganese-rich domains, whereas the for the remaining centers the Co3+-site is randomly occupied with Co/Mn according to the effective stoichiometry of the compound. Finally, a structural stability range emerges from the Newman-modeling that supports the discussed ability of manganese to act as an structure-stabilizing element in layered oxides.