bluuebunny/crossref_metadata_2025 huggingface dataset:
Workplace Social Support and Behavioral Health Prior to Long-Duration Spaceflight
Authors: Deming Charlene A. , Vasterling Jennifer J.
Published: May 2017

INTRODUCTION: Preparation and training for long-duration spaceflight bring with them psychosocial stressors potentially affecting the well-being and performance of astronauts, before and during spaceflight. Social support from within the workplace may mitigate behavioral health
concerns arising during the preflight period and enhance resiliency before and during extended missions. The purpose of this review was to evaluate evidence addressing the viability of workplace social support as a pre-mission countermeasure, specifically addressing: 1) the observed relationships
between workplace social support and behavioral health; 2) perceived need, acceptability, and format preference for workplace social support among high-achievers; 3) potential barriers to delivery/receipt of workplace social support; 4) workplace social support interventions; and 5) delivery
timeframe and anticipated duration of workplace social support countermeasure benefits.METHODS: We conducted an evidence review examining workplace social support in professional contexts sharing one or more characteristics with astronauts and spaceflight. Terms included populations
of interest, social support constructs, and behavioral health outcomes. Abstracts of matches were subsequently reviewed for relevance and quality.RESULTS: Research findings demonstrate clear associations between workplace social support and behavioral health, especially following
exposure to stress. Further, studies indicate strong need for support and acceptability of support countermeasures, despite barriers. Our review revealed two general formats for providing support (i.e., direct provision of support and training to optimize skills in provision and receipt of
support) with potential differentiation of expected duration of benefits, according to format.DISCUSSION: Workplace social support countermeasures hold promise for effective application during pre-mission phases of long-duration spaceflight. Specific recommendations are provided.Deming
CA, Vasterling JJ. Workplace social support and behavioral health prior to long-duration spaceflight. Aerosp Med Hum Perform. 2017; 88(6):565–573.
Hemoglobin Oxygen Saturation with Mild Hypoxia and Microgravity
Authors: Conkin Johnny , Wessel James H. , Norcross Jason R. , Bekdash Omar S. , Abercromby Andrew F. J. , Koslovsky Matthew D. , Gernhardt Michael L.
Published: May 2017

INTRODUCTION: Microgravity (μG) exposure and even early recovery from μG in combination with mild hypoxia may increase the alveolar-arterial oxygen (O2) partial pressure gradient.METHODS: Four male astronauts on STS-69 (1995) and four on STS-72 (1996)
were exposed on Earth to an acute sequential hypoxic challenge by breathing for 4 min 18.0%, 14.9%, 13.5%, 12.9%, and 12.2% oxygen–balance nitrogen. The 18.0% O2 mixture at sea level resulted in an inspired O2 partial pressure (PIo2) of 127
mmHg. The equivalent PIO2 was also achieved by breathing 26.5% O2 at 527 mmHg that occurred for several days in μG on the Space Shuttle. A Novametrix CO2SMO Model 7100 recorded hemoglobin (Hb) oxygen saturation through finger pulse oximetry (Spo2,
%). There were 12 in-flight measurements collected. Measurements were also taken the day of (R+0) and 2 d after (R+2) return to Earth. Linear mixed effects models assessed changes in Spo2 during and after exposure to μG.RESULTS: Astronaut Spo2
levels at baseline, R+0, and R+2 were not significantly different from in flight, about 97% given a PIo2 of 127 mmHg. There was also no difference in astronaut Spo2 levels between baseline and R+0 or R+2 over the hypoxic challenge.CONCLUSIONS:
The multitude of physiological changes associated with μG and during recovery from μG did not affect astronaut Spo2 under hypoxic challenge.Conkin J, Wessel JH III, Norcross JR, Bekdash OS, Abercromby AFJ, Koslovsky MD, Gernhardt ML. Hemoglobin oxygen saturation with mild hypoxia and microgravity. Aerosp Med Hum Perform. 2017; 88(6):527–534.
A systematic approach for ERP implementation in the construction industry
Authors: HADIDI Laith , ASSAF Sadi , ALKHIAMI Adel
Published: May 2017

The objective of this paper is to provide a decision support tool that helps in prioritizing enterprise resource planning (ERP) modules’ implementation. The literature shows high risks of failure during the ERP implementation in construction in­dustry. This research provides a systematic approach to have a successful ERP implementation in the construction industry. The provided approach of this research helps construction companies worldwide and specifically Saudi Arabia to better implement ERP projects. A case study approach is conducted with experts in ERP implementation at construction field in order to rank different ERP modules. This research develop a four step methodology to sequence the ERP module implementation. The first step defines the most common ERP modules in the construction industry. The second step defines the expected benefits of ERP implementation. The third step will define the importance index (I). Finally, the fourth step rank the ERP modules based on the global index that combines the criteria index and module index. The main findings of this research provided a comprehensive list of thirteen ERP modules ranked according to the Saudi construction industry. Out of thirteen modules, the top ranked mod­ules were inventory control and logistics, procurement, and project finance and accounting.
On the Radio-emitting Particles of the Crab Nebula: Stochastic Acceleration Model
Authors: Tanaka Shuta J. , Asano Katsuaki
Published: May 2017

The broadband emission of pulsar wind nebulae (PWNe) is well described by non-thermal emissions from accelerated electrons and positrons. However, the standard shock acceleration model of PWNe does not account for the hard spectrum in radio wavelengths. The origin of the radio-emitting particles is also important to determine the pair production efficiency in the pulsar magnetosphere. Here, we propose a possible resolution for the particle energy distribution in PWNe; the radio-emitting particles are not accelerated at the pulsar wind termination shock but are stochastically accelerated by turbulence inside PWNe. We upgrade our past one-zone spectral evolution model to include the energy diffusion, i.e., the stochastic acceleration, and apply the model to the Crab Nebula. A fairly simple form of the energy diffusion coefficient is assumed for this demonstrative study. For a particle injection to the stochastic acceleration process, we consider the continuous injection from the supernova ejecta or the impulsive injection associated with supernova explosion. The observed broadband spectrum and the decay of the radio flux are reproduced by tuning the amount of the particle injected to the stochastic acceleration process. The acceleration timescale and the duration of the acceleration are required to be a few decades and a few hundred years, respectively. Our results imply that some unveiled mechanisms, such as back reaction to the turbulence, are required to make the energies of stochastically and shock-accelerated particles comparable.
A New Approach to Convective Core Overshooting: Probabilistic Constraints from Color–Magnitude Diagrams of LMC Clusters
Authors: Rosenfield Philip , Girardi Léo , Williams Benjamin F. , Johnson L. Clifton , Dolphin Andrew , Bressan Alessandro , Weisz Daniel , Dalcanton Julianne J. , Fouesneau Morgan , Kalirai Jason
Published: May 2017

We present a framework to simultaneously constrain the values and uncertainties of the strength of convective core overshooting, metallicity, extinction, distance, and age in stellar populations. We then apply the framework to archival Hubble Space Telescope observations of six stellar clusters in the Large Magellanic Cloud that have reported ages between

. Assuming a canonical value of the strength of core convective overshooting, we recover the well-known age–metallicity correlation, and additional correlations between metallicity and extinction and metallicity and distance. If we allow the strength of core overshooting to vary, we find that for intermediate-aged stellar clusters, the measured values of distance and extinction are negligibly effected by uncertainties of core overshooting strength. However, cluster age and metallicity may have disconcertingly large systematic shifts when

is allowed to vary by more than

. Using the six stellar clusters, we combine their posterior distribution functions to obtain the most probable core overshooting value,

, which is in line with canonical values.
Effects of Low-Intensity Exercise in Older Adults With Chronic Heart Failure During the Transitional Period From Hospital to Home in China: A Randomized Controlled Trial
Authors: Xueyu Li , Hao Yu , Shunlin Xu , Rongbin Li , Yuan Gao
Published: May 2017

The transitional period from hospital to home is critical to decreasing rates of preventable, poor post-discharge outcomes. Older adults with chronic heart failure (CHF) may be challenged to exercise during the transitional period. The purpose of the current study was to test the effects of low-intensity exercise on health-related quality of life (HRQoL), physical function, and heart function in Chinese older adults with CHF during the transitional period. The study was randomized, single-blinded, and controlled. Seventy-eight older adults with stable CHF were evaluated. The intervention group (
n
= 41) participated in a regular low-intensity walking protocol and the control group (
n
= 38) did not. Measures included the Minnesota Living with Heart Failure Questionnaire (MLHFQ), 6-minute walk distance (6MWD), Timed Up and Go (TUG) test, resting heart rate (RHR), and left ventricular ejection fraction (LVEF). After 12 weeks, the intervention group showed significant improvements in MLHFQ, 6MWD, and TUG scores compared to the control group (
p
< 0.05), and no significant improvements in RHR and LVEF (
p
> 0.05). Low-intensity exercise during the transitional period is an effective way to improve HRQoL and physical function in older adults.

[Res Gerontol Nurs. 2017; 10(3):121–128.]
Gecko Feet as a Bio Prototype for the Use of Dry Adhesion in Engineering Decisions
Authors: Suresh P.K.
Published: May 2017

The focus of this review is to outline the remarkable ability of the gecko to climb surfaces vertically, at tremendous speed (over 1 m/s) using van der Waals forces (one of nature’s amazing “sticking and unsticking” directional dry adhesion design) as well as contact splitting mechanism. Further, the elasticity of the hairs conforming to the topology of the surface and hence contributing to an increased adhesion force is discussed, apart from the applications of gecko feet bio-inspired solutions. Such applications are in areas as diverse as, and not restricted to, climbing vertically and horizontally on glass surfaces; fitting televisions and computers on the walls; in robots for the inspection and maintenance of installations in space stations and self-cleaning surfaces. By this review, we hope to inspire and motivate the current generation of engineers to study, mimic and abstract the fundamental hierarchical structures as well as the incredible dry adhesion principles (as closely as is possible) objects of nature. This approach will help in improving upon the existing methods to produce gecko feet-like materials with dry adhesion as well as self-cleaning properties. Such refinement strategies can also include the development of hybrid structures utilizing a combination of designs found in other organisms in Mother Nature (for e.g., the mushroom-shaped structure found in the beetle). This requires improvements in the fundamental hierarchical arrangement of the gecko feet-like hairs and their inter-facial interactions with model substrata. Also, the mechanical deformations of the different gecko feet-like materials as well as how sliding velocity impacted adhesional and frictional phenomena should be studied and better understood. This will enable the engineer to develop better gecko feet-like adhesives.
Biomechanical Comparison between Two Models of the Lumbar Intersomatic Fusion Cage Analyzed by the Finite Element Method
Authors: Kebdani Said , Kebdani S. , Dahmane M. , Azari Z.
Published: May 2017

There are a few years, it has become the use of artificial discs and effectively to compensate for damaged discs in humans due to the eccentric load applied on the spine. As we know very well that the success of a disc implantation depends strongly on the initial stability of the implant and the integration of the bone tissue of the vertebrae with these discs in the long term. Due to the optimal distribution of mechanical stresses in the surrounding bone. It is for this reason that the search for reasonable solutions to compensate the damaged disk and reduce the stresses in the cortical bone and spongy has become a very important research axis. Several alternatives have been studied, including implant design, prosthesis geometry, prosthetic components and biomaterials used. In this regard, we have proposed two new models for some innovative artificial disks by some of the biomechanics researchers and we have installed these discs between the two vertebrae L5 and S1 of the spine, to ensure spinal stability and avoid slipping, we installed a posterior attachment system (6 screws plus 2 rods) at the pedicular levels of the lumbar vertebra (S1-L5, L5-L4).It is for this technique that we have used finite elements in three dimensions and using the software ANSYS to know the extent of the realization of these discs under the influence of the load applied to them. The numerical results show that these disks played a very important role in the absorption of the stresses and to minimize, On the other hand, the lumbar inter-somatic cage (Model II) filled with cancellous bone is too great a role in reducing the stress compared to another synthetic (Model I) disc. In general, the new model of the inter-somatic cage filled with cancellous bone and reinforced by a posterior fixation system has given a lower level of stress in the cortical bone and the spongy bone of the lumbar vertebra (L5) compared to the healthy disk (D1).
Numerical Analysis of Asymmetrically Bonded Composite Patch Repair and Effect of In-Plane Skewed Crack Front on the SIF
Authors: Abdelghani Baltach , Abdelkarim Aid , Djebli Abdelkader , Bouiedjra Belabbes Bachir , Ali Benhamena
Published: May 2017

A nonlinear 3-D finite element analysis was conducted to analyze the crack front behavior of a center cracked aluminum plate, asymmetrically repaired with composite patch. According to experimental observations, the crack front was modeled as an inclined shape from the initial state where the crack front is straight and parallel to the thickness direction from the patched side toward the un-patched side. The skew degree is found to strongly influence the stress intensity factor (SIF) distribution along the crack front. In effect, the obtained trends of the SIF’s distribution are different and changes during crack growth stages. The main finding is that regardless the crack front shape (inclination), the average stress intensity factor through the crack front remains constant and consequently, it means to be an effective parameter to estimate the fatigue life and crack growth of the asymmetrically patched structures. The performed models gave good results compared to the literature and the different findings correlate well with the experimental observations and make sense with a realistic crack development.
Optimization of the Solder Joints of an Electronic Card Using Heuristic Algorithm
Authors: Hachimi H. , Assif S. , Aoues Y. , El Hami Abdelkhalak , Ellaia Rachid , Agouzoul M.
Published: May 2017

In this paper, a new hybrid method of optimization by the heuristics algorithms to evaluate the reliability of the electronic card by simulating its thermo-mechanical behavior is presented. A model of simulation by finite element is developed to consider the maximal deformations due to temperature; a mechanico- computing coupling is used to find the optimal structure. Embedded electronic systems are playing a very important role in several areas, such as in automotive, aerospace, telecommunications and medical sectors. To properly perform their functions, electronic systems must be reliable [18].This powerful and robust algorithm which is based on hybridization of Differential Evolutionary algorithm with Particle Swarm Optimization (PSO) gives performance results [7].
Bolstering the Number and Function of HSV-1–Specific CD8+ Effector Memory T Cells and Tissue-Resident Memory T Cells in Latently Infected Trigeminal Ganglia Reduces Recurrent Ocular Herpes Infection and Disease
Authors: Khan Arif A. , Srivastava Ruchi , Chentoufi Aziz A. , Kritzer Elizabeth , Chilukuri Sravya , Garg Sumit , Yu David C. , Vahed Hawa , Huang Lei , Syed Sabrina A. , Furness Julie N. , Tran Tien T. , Anthony Nesburn B. , McLaren Christine E. , Sidney John , Sette Alessandro , Noelle Randolph J. , BenMohamed Lbachir
Published: May 2017

HSV type 1 (HSV-1) is a prevalent human pathogen that infects >3.72 billion individuals worldwide and can cause potentially blinding recurrent corneal herpetic disease. HSV-1 establishes latency within sensory neurons of trigeminal ganglia (TG), and TG-resident CD8+ T cells play a critical role in preventing its reactivation. The repertoire, phenotype, and function of protective CD8+ T cells are unknown. Bolstering the apparent feeble numbers of CD8+ T cells in TG remains a challenge for immunotherapeutic strategies. In this study, a comprehensive panel of 467 HLA-A*0201–restricted CD8+ T cell epitopes was predicted from the entire HSV-1 genome. CD8+ T cell responses to these genome-wide epitopes were compared in HSV-1–seropositive symptomatic individuals (with a history of numerous episodes of recurrent herpetic disease) and asymptomatic (ASYMP) individuals (who are infected but never experienced any recurrent herpetic disease). Frequent polyfunctional HSV-specific IFN-γ+CD107a/b+CD44highCD62LlowCD8+ effector memory T cells were detected in ASYMP individuals and were primarily directed against three “ASYMP” epitopes. In contrast, symptomatic individuals have more monofunctional CD44highCD62LhighCD8+ central memory T cells. Furthermore, therapeutic immunization with an innovative prime/pull vaccine, based on priming with multiple ASYMP epitopes (prime) and neurotropic TG delivery of the T cell–attracting chemokine CXCL10 (pull), boosted the number and function of CD44highCD62LlowCD8+ effector memory T cells and CD103highCD8+ tissue-resident T cells in TG of latently infected HLA-A*0201–transgenic mice and reduced recurrent ocular herpes following UV-B–induced reactivation. These findings have profound implications in the development of T cell–based immunotherapeutic strategies to treat blinding recurrent herpes infection and disease.
Selective Induction of Homeostatic Th17 Cells in the Murine Intestine by Cholera Toxin Interacting with the Microbiota
Authors: Zhao Qing , Harbour Stacey N. , Kolde Raivo , Latorre Isabel J. , Tun Hein M. , Schoeb Trenton R. , Turner Henrietta , Moon James J. , Khafipour Ehsan , Xavier Ramnik J. , Weaver Casey T. , Elson Charles O.
Published: May 2017

Th17 cells play a role as an inflammation mediator in a variety of autoimmune disorders, including inflammatory bowel disease, and thus are widely considered to be pathogenic. However, Th17 cells are present in the normal intestine and show a homeostatic phenotype; that is, they participate in the maintenance of intestinal homeostasis rather than inducing inflammation. We observed an enlarged Th17 population in the small intestine of C57BL/6.IgA−/− mice compared with wild-type mice, which was further amplified with cholera toxin (CT) immunization without causing intestinal inflammation. The increased Th17 induction and the correspondingly 10-fold higher CT B subunit–specific serum IgG response in IgA−/− mice after CT immunization was microbiota dependent and was associated with increased segmented filamentous bacteria in the small intestine of IgA−/− mice. Oral administration of vancomycin greatly dampened both CT immunogenicity and adjuvanticity, and the differential CT responses in IgA−/− and wild-type mice disappeared after intestinal microbiota equalization. Using gnotobiotic mouse models, we found that CT induction of homeostatic intestinal Th17 responses was supported not only by segmented filamentous bacteria, but also by other commensal bacteria. Furthermore, transcriptome analysis using IL-17AhCD2 reporter mice revealed a similar gene expression profile in CT-induced intestinal Th17 cells and endogenous intestinal Th17 cells at homeostasis, with upregulated expression of a panel of immune-regulatory genes, which was distinctly different from the gene expression profile of pathogenic Th17 cells. Taken together, we identified a nonpathogenic signature of intestinal homeostatic Th17 cells, which are actively regulated by the commensal microbiota and can be selectively stimulated by CT.
Краевая задача для гиперболической системы первого порядка в двумерной области
Authors: Zhura Nikolai Andreevich , Soldatov Alexandr Pavlovich
Published: May 2017

В работе рассматривается строго гиперболическая система первого порядка с постоянными коэффициентами, состоящая из трех уравнений, в ограниченной кусочно-гладкой области. Предполагается, что граница этой области составлена из шести гладких нехарактеристических дуг. В этой области ставится краевая задача по заданным попеременно на этих дугах одного или двух линейных соотношений искомого решения. Показано, что при некоторых дополнительных условиях на коэффициенты этих соотношений, границу области и характер поведения решения вблизи характеристик, проходящих через угловые точки области, эта задача однозначно разрешима.
Библиография: 16 наименований.
Are Multiple Minimal Outgroup Males Readily Associated with Threat?
Authors: Van Leeuwen Florian , Quillien Tadeg , Boyer Pascal
Published: May 2017

Humans might have a propensity to associate a collective of multiple outgroup males with threat, even in the context of minimally defined groups. We tested this hypothesis using a fear-conditioning paradigm (Study 1) and a signal detection paradigm (Study 2). Results of Study 1 suggest that stimuli showing ingroup males are more easily associated with threat than stimuli showing outgroup males. Results of Study 2 suggest a bias to perceive single males (both ingroup and outgroup) as more threatening than multiple outgroup males. We discuss the contrast with results of previous studies.
Presenting Pinter's Last Tape: Performative Futures and the Phenomenological Economy of Bananas
Authors: Norman Lance
Published: May 2017

Reading Harold Pinter the performer through the blending of temporality, semiotics, phenomenology, and performativity that is the essence of theatrical ghosting, Lance Norman analyzes and contrasts Pinter's role in The Tailor of Panama with his critically lauded performance in Samuel Beckett's Krapp's Last Tape. While the ghost of the writer was always apparent in Pinter the actor, it was frequently a passive and impotent figure with little affect other than announcing its presence as the writer who has lost his power. The Tailor of Panama represents the writerly Pinter ghost as a transient historical distraction: a quaint and humorous digression with little matter. The possibility of empowering, materializing, and making the past ghost present would not be a possibility for Pinter until Krapp's Last Tape. Krapp provided Harold Pinter with the power to resolve the conflict between artist and citizen that had consumed him for his entire career.
‘Have Our People Been Sufficiently Cautious?’: Wesleyan Responses to Lorenzo Dow in England and Ireland, 1799–1819
Authors: Woolley Tim
Published: May 2017

American revivalist Lorenzo Dow (1777–1834) has long been identified as key to the emergence of camp meetings that led to Primitive Methodism. His visits to Ireland and England in 1799–1801, 1805–7, and 1818–19 brought conflicting responses from Wesleyanism at connexional level and much local interest in both countries. This article contends that it was his failure to cultivate alliances with any leading Wesleyan ministers and his preaching for both New Connexion and Independent Methodist churches that led to repeated Wesleyan Conference censure in England, while the support of influential itinerants in Ireland was not ultimately enough to prevent Conference disavowal there, too.
ORIGIN AND HAZARDS OF HYDROGEN SULPHIDE AND HIGH-PRESSURE NATURAL GAS IN DEPOSITS OF POLKOWICE-SIEROSZOWICE AND RUDNA COPPER ORE MINES: PRELIMINARY ISOTOPIC AND MINERALOGICAL STUDIES
Authors: KOTARBA Maciej , Bilkiewicz Elżbieta , Manecki Maciej , Pawlik Waldemar , Ciesielczyk Andrzej , Selerowicz Tomasz
Published: May 2017

Composition of natural gas from the Zechstein Limestone (Ca1) strata of Rudna mine has been compared with the natural gas from Carboniferous, Rotliegend strata of the Fore-Sudetic Monocline and with gas generated from the organic matter of the Main Dolomite during hydrous pyrolysis experiments. The gas from Rudna mine is characterized by the normal methane-ethane-propane isotopic system which indicates formation in one stage from a single source rock probably of the Carboniferous age containing kerogen of mixed II/III type. Generation of the hydrogen sulphide resulted from the microbial sulphate reduction processes of the basal anhydrite has been proven by mineralogical and isotopic 13C/12C analyses of 12 carbonate and 34S/35S analyses of 14 sulphate samples. These samples were collected in the mine at the depth of about 900–1200 m at temperature range of 35–45°C and two samples of carbonates were taken from one core.
USING A GEORADAR TO IDENTIFY POTENTIAL SOURCES OF GAS RISKS AND TO RECOGNIZE THE GEOLOGICAL STRUCTURE OF THE ZECHSTEIN OLDEST HALITE ROCK SALT DEPOSIT (NA1) AT THE POLKOWICE-SIEROSZOWICE MINE
Authors: Chrul Tomasz , Pawlik Waldemar , Wrzosek Joanna
Published: May 2017

The Polkowice-Sieroszowice Mine the KGHM Polska Miedź S.A. uses the georadar method to recognize the geological structure of the Zechstein (Upper Permian) Oldest Halite rock salt deposits (Na1). The incentive to use the georadar was the occurrence of a gas risk in mining excavations. This method is ideal for locating anhydrite blocks, that are potential sites of hydrogen sulphide accumulation, and is helpful in determining the top and base of the salt deposits. In the tests, 100 MHz and 30 MHz antennas were used, which reached the ranges of 40 m and 60 m and resolutions of 0.25 m and 1.0 m, respectively. The profiling with use of a georadar was performed in research boreholes and along the floors of excavation drifts.
THE FIRST BOTALLACKITE OCCURRENCE IN POLAND (POLKOWICE-SIEROSZOWICE MINE)
Authors: Siuda Rafał , Łodziński Marek , Syczewski Marcin , Kruszewski Łukasz , Pršek Jaroslav , Hoffmann Paweł
Published: May 2017

The presence of botallackite was recognized in an underground galery in the Polkowice-Sieroszowice copper mine. This mineral coexists with paratacamite, clinoatacamite, gypsum and halite. Botallackite crystallized from chloride-reach (3500 mg/dm3), warm (33°C) mine water. On the basis of microprobe analyzes, two types of botallackite were recognized. The first one contains only small amounts of Pb, Fe and Zn. These elements substitute Cu2+ ions in small proportions. Empirical formula of this botallackite is: (Cu1.94Pb0.02Fe0.02Zn0.02)S = 2.00Cl0.98(OH)3.02. The second type of the mineral were characterized by increased amounts of Pb, Fe, Zn. The empiric formula of this type of botallackite can be expressed as: (Cu1.85Pb0.09Fe0.04Zn0.02)S = 2.00Cl1.05(OH)2.95. The calculated unit-cell parameters of botallackite from Polkowice-Sieroszowice mine are as follows: a = 5.7165(2), b = 6.1362(2), c = 5.6325(2), b = 92.943(3). Botallackite is a least stable polymorph of Cu2Cl(OH)3 and finally transforms to more stable polymorphs. The botallackite recrystallization can be inhibit by high concentration of Ca2+ in the mine water. Substitution of Cu2+ ions by other divalent cations can slows the rapidity of recrystalization this mineral and prevent its further transformation also. The Polkowice-Sieroszowice mine is the first occurrence of botallackite in Poland.
VARIABILITY OF ORE MINERALIZATION IN THE NORTH-WEST-TRENDING EXTENSIONOF THE LUBIN–SIEROSZOWICE DEPOSIT
Authors: OSZCZEPALSKI Sławomir , CHMIELEWSKI Andrzej , SPECZIK Stanisław
Published: May 2017

The Polish Geological Institute – NRI has conducted investigations of the Kupferschiefer series since 1957, when the giant sediment-hosted stratiform Cu-Ag ore deposit was discovered in the central part of the Fore-Sudetic Monocline. Until 1991, a number of drilling programs were completed by PGI-NRI and later research has been focusing mainly on cooperation with oil and gas industry and their core material. Over the last few years, thanks to systematic examination of the drill holes located in the north-western extension, many prospective areas have been recognized and delineated. These prospects are located between Lubin-Sieroszowice deposit and the eastern part of the Zielona Góra oxidized field. In the Kożuchów area, the lower part of Zechstein copper-bearing series contain only relict sulphide mineralization accompanied by iron oxides while reduced rocks with metal sulphides occur in the uppermost part of Zechstein Limestone or at the base of Lower Anhydrite. Grochowice area, where reduced facies prevail in copper-bearing series, is characterized by the predomination of rich Cu-Ag mineralization proximaly to oxidized area. The western part of studied area is dominated by Cu-S type sulphides (chalcocite, digenite, covellite) whereas the eastern part is represented by Cu-Fe-S type minerals (bornite, chalcopyrite) with high galena and sphalerite concentrations. The spatial variability of sulphide mineralization with respect to the oxidized rocks indicates that Bytom Odrzański deposit extends in the north-west direction, continuing in the form of a copper belt along the eastern border of the oxidized area. An extensive deep exploration drilling program is implemented to verify the resource potential within predicted copper belt.
Parotid gland tumors. Results of retrospective analysis of 149 patients treated at the Clinical Department of Cranio-Maxillofacial Surgery, Clinic of Otolaryngology and Oncologic Laryngology of Military Institute of Medicine in Warsaw in years 2006–2016
Authors: Chloupek Aldona , Zarzycki Krzysztof , Dąbrowski Jarosław , Domański Wojciech
Published: May 2017

Wstęp: Nowotwory mające swoją etiologię w gruczołach ślinowych występują rzadko i stanowią ok. 3–10% wszystkich guzów w obrębie głowy i szyi.
Materiał i metody: W latach 2006–2016 w Klinicznym Oddziale Chirurgii Czaszkowo-Szczękowo-Twarzowej Wojskowego Instytutu Medycznego w Warszawie z powodu nowotworów ślinianek przyusznych hospitalizowano i leczono 149 pacjentów. Podstawą do analizy były historie chorób pacjentów, wyniki badań histopatologicznych oraz protokoły zabiegów operacyjnych.
Wyniki: W 126 przypadkach guzy były łagodne, natomiast w 26 guzy złośliwe. Analizując wyniki można stwierdzić, że nowotwory - zarówno łagodne, jak i złośliwe – częściej występowały u mężczyzn. Średni wiek całej grupy badanych wynosił 58,3 lat, dla zmian złośliwych – 65,5 lat, a dla zmian łagodnych był nieznacznie niższy i wynosił 56,9 lat. Wśród pacjentów objętych analizą szczyt zachorowalności przypadał na przedział wiekowy 60–69 lat. Ponadto zwraca uwagę, iż przedział ten był taki sam dla ogólnej liczby guzów, jak i nowotworów łagodnych, natomiast dla nowotworów złośliwych był nieznacznie wyższy i wynosił 70–79 lat. Z analizy zebranego materiału wynika, że guzy łagodne występowały znamiennie częściej, stanowiąc 84,56% wszystkich guzów. Najczęstszymi rozpoznaniami wśród nowotworów łagodnych były gruczolak wielopostaciowy (adenoma pleomorphicum) oraz gruczolak limfatyczny (adenolymphoma), które stanowiły łącznie 93,66%. Rezultaty badań wskazują, że wśród nowotworów złośliwych dominowały: gruczolakorak polimorficzny o niskiej złośliwości (polymorphous low-grade adenocarcinoma) występujący w 26,07% przypadków, gruczolakorak inaczej nieokreślony (adenocarcinoma NOS) oraz rak zrazikowokomórkowy (acinic cell carcinoma). Każdy z nich stanowił po 13,04% rozpoznań. Jak wynika z przeprowadzonej analizy najczęstszą metodą leczenia było leczenie chirurgiczne jako metoda stosowana samodzielnie.
Wnioski: Uzyskane z retrospektywnej analizy dane korelują z piśmiennictwem krajowym i światowym.
Simple and Rapid Dual-Dispersive Liquid–Liquid Microextraction as an Innovative Extraction Method for Uranium in Real Water Samples Prior to the Determination of Uranium by a Spectrophotometric Technique
Authors: Khan Naeemullah , Tuzen Mustafa , Kazi Tasneem Gul
Published: May 2017

An innovative, rapid, and simple dual-dispersive liquid–liquid microextraction (DDLL-ME) approach was used to extract uranium from real samples for the first time. The main objective of this study was to disperse extraction solvent by using an air-agitated syringe system to overcome matrix effects and avoid dispersion of hazardous dispersive organic solvents by using heat. The DDLL-ME method consisted of two dispersive liquid–liquid extraction steps with chloroform as the extracting solvent. Uranium formed complexes with 4-(2-thiazolylazo) resorcinol in the aqueous phase and was extracted in extracting solvent (chloroform) after the first dispersive liquid–liquid process. Uranium was then back-extracted in the acidic aqueous phase in a second dispersive liquid–liquid process. Finally, uranium was determined by a spectrophotometric detection technique. The variables that played a key role in the proposed method were studied and optimized. The LOD and sensitivity enhancement factor for uranium were found to be 0.60 µg/L and 45, respectively, under optimized conditions. Calibration graphs were found to be linear in the range of 5.0–600 µg/L. The RSD was 2.5%. Reliability of the proposed method was verified by analyzing certified reference material TM-28.3.
Tecnologias da Informação e Comunicação Aplicadas aos Processos de Ensino e de Aprendizagem: percepção de um grupo focal de professores de uma escola do Maranhão
Authors: Oliveira Filho Vicente Henrique de , Santos Gilberto Tavares dos , Abar Celina Aparecida Almeida Pereira
Published: May 2017

O presente artigo apresenta uma pesquisa sobre as implicações do uso das Tecnologias da Informação e Comunicação (TIC) nos processos de ensino e de aprendizagem na visão dos professores. Trata-se de uma pesquisa qualitativa, que utilizou a técnica dos grupos focais com uma pergunta geradora para coletar os dados necessários e realizar as análises subsequentes. Percebeu-se que há falta de preparo dos professores entrevistados para o uso das TIC em sua prática pedagógica, reduzindo-as apenas a um recurso adicional, pouco explorando as suas várias funcionalidades. É necessário, portanto, que a utilização dessas tecnologias pelos professores ultrapasse a dimensão utilitarista e seja incorporada como novas possibilidades educativas. Conclui-se que a subutilização das TIC pelos professores entrevistados é decorrente da falta de conhecimento e preparo para o uso dessas tecnologias como ferramenta didática. Essa limitação precisa ser superada por meio de uma adequada formação docente. 
FIRST FARMERS IN MAINLAND SOUTHEAST ASIA
Authors: Higham Charles Franklin
Published: May 2017

The domestication of rice and millet took in the Yangtze and Yellow River valleys. It is argued that the expansion of farming communities from these two regions reached mainland Southeast Asia from the late third millennium BC. The conjunction of new archaeological and bioanthropogical information, and the re-examination of older reports, is beginning to illuminate the interactions between the incoming farmers and long-established hunter gatherers. It is argued that there were several distinct expansionary routes. One followed the coast of Vietnam, others involved the courses of the Salween and Mekong rivers.This brought incoming farmers to a wide range of new habitats. Khok Phanom Di is a key site. Formerly located on the estuary of the Bang Pakong River, a new analysis of cranial and dental variables relate the inhabitants to expansionary farmers. Their adaptation to a marine estuarine habitat, however, made rice cultivation marginal at best, and the new settlers turned to hunting and gathering while maintaining a fully Neolithic material culture.
Validation de la version française canadienne du Perception of Prevalence of Aggression Scale auprès d’un échantillon d’intervenants en protection de la jeunesse1
Authors: Geoffrion Steve , Giguère Charles-Édouard , Fortin Mélissa , Fortin Christophe , Guay Stéphane
Published: May 2017

Objectif. L’objectif de cette étude est d’évaluer la validité de construit de la version française de l’échelle Perception Of Prevalence of Aggression Scale (POPAS), un questionnaire auto-rapporté mesurant l’exposition à la violence au travail commise par la clientèle du milieu de la santé et des services sociaux. Méthode. Un échantillon de 310 intervenants en protection de la jeunesse est utilisé afin de confirmer la structure interne à quatre facteurs de l’instrument. À défaut de confirmer cette structure, un modèle d’équation structurelle exploratoire est utilisé. Les facteurs retenus sont soumis aux tests d’alpha de Cronbach qui permettent d’évaluer leur cohérence interne. Ils sont corrélés avec la version française du Posttraumatic Stress Disorder Checklist Scale (PCLS) et du nombre de jours d’absence du travail causé par la violence afin d’évaluer la validité convergente. Il sont également corrélées avec le Felt Accountability (FA) afin d’évaluer la validité divergente. Des analyses de comparaison en fonction du lieu de travail permettent d’explorer la validité de critère. Résultats. L’analyse factorielle confirmatoire ne confirme pas la structure à quatre facteurs du POPAS. L’équation structurelle exploratoire valide une structure à trois facteurs : « violence verbale », « violence physique » et « violence envers soi-même ». Les deux premiers possèdent une bonne cohérence interne. Les corrélations positives entre ces deux facteurs et le PCLS, ainsi qu’entre ces deux facteurs et le nombre de jours d’absence appuient la validité convergente du POPAS. Toutefois, l’absence de corrélation significative entre le dernier facteur et le PCLS, et entre ce facteur et le nombre de jour d’absence n’appuient pas cette convergence. L’absence de corrélation des facteurs avec le FA appuie la validité divergente du POPAS. Les différences observées selon les environnements de travail attestent aussi de la validité de critère. Discussion. La validité de construit de la version française canadienne du POPAS suggère que l’outil permet d’évaluer la fréquence subjective de différentes formes de violence au travail vécues par les intervenants en protection de la jeunesse. Il offre ainsi une alternative aux données officielles (c.-à-d. déclaration d’incidents à l’employeur) qui reflètent peu la réalité de ces travailleurs compte tenu de la sous-déclaration des incidents de violence dans ce milieu.
Étude sur les changements apportés aux processus de traitement des cas d’agression sexuelle1
Authors: Silva2 David , Collin-Vézina Delphine , Dubois Florence
Published: May 2017

Objectif : Cette étude vise à analyser le processus de traitement des signalements d’agression sexuelle sur des mineurs (ASM) par les services de protection de l’enfance (SPE) dans le but de comprendre son rôle dans la baisse récente des cas confirmés d’AS. Méthodologie : Une base de données composée de 53 848 cas d’enfants signalés aux SPE du Québec (Canada), de 2002 à 2013, a été utilisée afin de déterminer le rôle des caractéristiques de l’enfant, des caractéristiques administratives et de la date du signalement sur la décision de retenir le dossier à des fins d’évaluation. Résultats : Les analyses de régression logistique montrent que : 1) les signalements d’AS étaient plus susceptibles d’être examinés lorsque l’enfant était plus jeune ; 2) les caractéristiques administratives expliquent une part importante des décisions de rétention ; 3) plus importants encore que tout autre facteur, les signalements reçus avant l’amendement en 2007 de la Loi sur la protection de la jeunesse étaient plus susceptibles d’être retenus à des fins d’évaluation que ceux reçus après l’amendement. Ces variables ont prédit 71,2 % des signalements retenus et 65,9 % des signalements non retenus. Conclusion : Ces résultats montrent que la baisse récente de l’incidence d’AS peut être attribuée aux changements apportés aux politiques et aux pratiques dans le processus de traitement des signalements, réduisant ainsi la probabilité que les signalements soient évalués.
De la pornographie légale à l’agression sexuelle
Authors: Fortin1 Francis , Paquette Sarah , Dupont Benoît
Published: May 2017

La théorie des scripts permet une compréhension séquentielle de la criminalité sous différentes formes. Alors que traditionnellement les chercheurs se sont intéressés aux crimes contre la propriété puis aux crimes contre la personne, la présente étude vise l’analyse d’une nouvelle forme de criminalité, soit celle commise au moyen d’Internet. L’objectif de cet article est d’examiner, à partir d’une recension des écrits scientifiques, la manière dont la consommation de pornographie juvénile peut être comprise selon une perspective dynamique. Il y est avancé que le consommateur de pornographie juvénile motivé, en acquérant de nouvelles connaissances et techniques, traverse nombre d’étapes et d’obstacles le menant ultimement à l’agression sexuelle d’enfants. Il est toutefois important de noter que seule une petite partie des individus s’engageront dans les étapes subséquentes du script et que l’accent est mis sur le contexte et non sur les liens de causalité qui unissent les étapes puisque leur existence reste à démontrer. Plus précisément, les cheminements de la consommation de pornographie adulte à la pornographie juvénile, à la distribution de ce type de matériel, au leurre d’enfant et, enfin, au basculement dans le réel, soit l’agression d’enfant et la production de pornographie juvénile seront détaillés. Les limites et les implications de l’étude seront discutées.
Distinct responses of Purkinje neurons and roles of simple spikes during associative motor learning in larval zebrafish
Authors: Harmon Thomas C , Magaram Uri , McLean David L , Raman Indira M
Published: May 2017

To study cerebellar activity during learning, we made whole-cell recordings from larval zebrafish Purkinje cells while monitoring fictive swimming during associative conditioning. Fish learned to swim in response to visual stimulation preceding tactile stimulation of the tail. Learning was abolished by cerebellar ablation. All Purkinje cells showed task-related activity. Based on how many complex spikes emerged during learned swimming, they were classified as multiple, single, or zero complex spike (MCS, SCS, ZCS) cells. With learning, MCS and ZCS cells developed increased climbing fiber (MCS) or parallel fiber (ZCS) input during visual stimulation; SCS cells fired complex spikes associated with learned swimming episodes. The categories correlated with location. Optogenetically suppressing simple spikes only during visual stimulation demonstrated that simple spikes are required for acquisition and early stages of expression of learned responses, but not their maintenance, consistent with a transient, instructive role for simple spikes during cerebellar learning in larval zebrafish.
Seasonal dispersal and longitudinal migration in the Relict Gull Larus relictus across the Inner-Mongolian Plateau
Authors: Liu Dongping , Zhang Guogang , Jiang Hongxing , Chen Lixia , Meng Derong , Lu Jun
Published: May 2017

The Relict Gull Larus relictus is a globally vulnerable species and one of the least known birds, so understanding its seasonal movements and migration will facilitate the development of effective conservation plans for its protection. We repeatedly satellite-tracked 11 adult Relict Gulls from the Ordos sub-population in Hongjian Nur, China, over 33 migration seasons and conducted extensive ground surveys. Relict Gulls traveled ∼800 km between Hongjian Nur in northern China to the coast of eastern China in a predominantly longitudinal migration, following a clockwise loop migration pattern. The gulls migrated faster in spring (4 ± 2 d) than in autumn (15 ± 13 d) due to a time-minimization strategy for breeding, and they showed considerable between-individual variation in the timing of the autumn migration, probably due to differences in the timing of breeding. Gulls that made at least two round trips exhibited high flexibility in spring migration timing, suggesting a stronger influence of local environment conditions over endogenous controls. There was also high route flexibility among different years, probably due to variations in meteorological or habitat conditions at stopover sites. Relict Gulls stayed for a remarkably long time (234 ± 17 d) on their major wintering grounds in Bohai Bay and Laizhou Bay, between which there were notable dispersals. Pre-breeding dispersals away from the breeding area were distinct, which seemed to be a strategy to cope with the degradation of breeding habitat at Hongjian Nur. Overwhelming lake shrinkage on the breeding ground and at stopover sites and loss of intertidal flats on the wintering grounds are regarded as the main threats to Relict Gulls. It is crucial to make protection administrations aware of the great significance of key sites along migration routes and to promote the establishment of protected areas in these regions.
Perfecting prediction of mutational impact on the aggregation propensity of the ALS‐associated hnRNPA2 prion‐like protein
Authors: Batlle Cristina , Fernández María Rosario , Iglesias Valentin , Ventura Salvador
Published: May 2017

An increasing number of human proteins are being found to bear a prion‐like domain (PrLD) driving the formation of membraneless compartments through liquid–liquid phase separation. Point mutations in these PrLDs promote the transition to an amyloid‐like state. There has been much debate on whether this aberrant aggregation is caused by compositional or sequential changes. A recent extensive mutational study of the ALS‐associated prion‐like hnRNPA2 protein provides a framework to discriminate the molecular determinants behind pathogenic PrLDs aggregation. The effect of mutations on the aggregation propensity of hnRNPA2 is best predicted by combining their impact on PrLD amino acid composition and sequence‐based amyloid propensity. This opens an avenue for the prediction of disease causing mutations in other human prion‐like proteins.
Epithelial‐to‐mesenchymal transition transcription factors in cancer‐associated fibroblasts
Authors: Baulida Josep
Published: May 2017

Beyond inducing epithelial‐to‐mesenchymal transcription (EMT), transcriptional factors of the Snail, ZEB and Twist families (EMT‐TFs) control global plasticity programmes affecting cell stemness and fate. Literature addressing the reactivation of these factors in adult tumour cells is very extensive, as they enable cancer cell plasticity and fuel both tumour initiation and metastatic spread. Incipient data reveal that EMT‐TFs are also expressed in fibroblasts, providing these with additional properties. Here, I will review recent reports on the expression of EMT‐TFs in cancer‐associated fibroblasts (CAFs). The new model suggests that EMT‐TFs can be envisioned as essential metastasis and chemoresistance‐promoting molecules, thereby enabling coordinated plasticity programmes in parenchyma and stroma–tumour compartments.