bluuebunny/crossref_metadata_2025 huggingface dataset:
Mechanical Mitral Valve Replacement during the 2nd Trimester of Pregnancy
Authors: Boulemden Anas , Malin Gemma L. , Wallace Suzanne V.F. , Mahmoud Amr , Smith William H.T. , Szafranek Adam A.
Published: February 2018

We report the case of a 44-year-old pregnant woman who was diagnosed with symptomatic severe mitral stenosis that did not respond to optimal medical therapy and balloon valvuloplasty. After a multidisciplinary team discussion on the timing and risks of interventions and postoperative optimization of peripartum anticoagulation, the patient underwent mechanical mitral valve replacement during the 2nd trimester of pregnancy. The outcome was excellent for the mother and the infant. This case emphasizes the importance of a multidisciplinary approach in managing unusual cases.
Symptomatic Celiomesenteric Trunk: Variable Presentations and Outcomes in 2 Patients
Authors: Kueht Michael L. , Wu Darrel L. , Mills Joseph L. , Gilani Ramyar
Published: February 2018

Mesenteric ischemia can be difficult to diagnose without a high degree of suspicion because it presents in a variety of ways. Visceral vascular collaterals between the fore- and midgut often provide protection against ischemia; however, the presence of anatomic variations, such as celiomesenteric trunk, can undermine the expected redundancy. Misdiagnosis can result in prolonged suffering or death, as evidenced in 2 of our patients with celiomesenteric trunk. The first patient with chronic mesenteric ischemia was diagnosed in the clinic and underwent successful surgical correction; the other had overwhelming, acute mesenteric ischemia, which resulted in death. Our cases show that successful diagnosis and management of mesenteric ischemia require astute interpretation of radiologic images.
Jan Evangelista Purkinje: A Passion for Discovery
Authors: Mazurak Magdalena , Kusa Jacek
Published: February 2018

December 2017 was the 230th anniversary of Jan Evangelista Purkinje's birth, which prompted us to review the life of this remarkable man who established the world's first department of physiology in Wroclaw and whose name is immortalized in the cardiologic eponym, Purkinje fibers. This paper offers an overview of Purkinje's life, legacy, and numerous scientific discoveries.
Fisherman Livelihood Effects on Marine Conservation Area towards Sustainable Development
Authors: Worowirasmi Tiara Sartika , Artiningsih Artiningsih
Published: February 2018

Excessive utilization of coastal resources is threatening the livelihood of coastal dependent people. The current challenge is how to maintain and use coastal resources sustainably without reducing their potential benefits in the future. In response to coastal sustainability issues, many countries have implemented a policy to support marine protected areas. Until 2008, approximately 3.2 million hectares of marine protected areas conserved in Indonesia. One of them located in Ujungnegoro-Roban, Batang Regency of Central Java Province, Indonesia. This study aims to analyze fisherman livelihoods in Ujungnegoro-Roban, which may affect the fishermen’s conservation choices. This study employs questionnaire survey as the main data collection source, which was distributed to 60 fishermen randomly. The findings indicated some fisherman livelihood factors which have significant support for conservation activities, i.e. age, experience, income level and fisherman organization membership.
Karakter Fisiologi dan Pendugaan Heritabilitas Tanaman M1 Bawang Merah (Allium Ascalonicum L.) Hasil Induksi Iradiasi Sinar Gamma
Authors: Alfariatna Lika , Kusmiyati Florentina , Anwar Syaiful
Published: February 2018

ABSTRACTThe aim of the research was to determine the physiological characters, heritability estimation, and information of lethal doses (LD50) of M1 onion plant induced by gamma ray irradiation. The research was arranged in monofactor experimental with Complete Randomized Design (CRD) with 6 treatments and 5 replication, each replication consisted of 5 onion bulbs was irradiated by gamma ray of 0, 3, 6, 9, 12, 15 Gy. Parameters observed: the percentage of germination, chlorophyl content, nitrate reductase activity, heritability estimation and LD50. The data were analyzed by anova and followed by BNT 5% level. The result showed that irradiation significant affected to chlorophyl content and nitrate reductase activity. LD50 of onion is 7,64 Gy. Heritability value range from 52,22 – 80,51%. Keywords : Allium ascalonicum L.,irradiation, LD50, heritability
Pengaruh konsentrasi IAA (Indole Acetic Acid) dan BAP (Benzil Amino Purin) terhadap pertumbuhan awal sambung samping Jambu Biji (Psidium guajava) Var. Kristal
Authors: Pratomo Hendra , Karno Karno , Kristanto Budi Adi
Published: February 2018

The purpose of this research was to study the influence of various concentrations of IAA and BAP on early growth budding of guava (Psidium guajava L.) Var. Kristal in side grafting propagation method. The experiment used completely randomized factorial design. The first factor was various concentrations of IAA (0, 100, and 200 ppm) and the second factor was various concentrations of BAP (0, 100, and 200 ppm). Each treatment was repeated three times. Parameters observed were the time of bud break, time of shoot emergence, and shoot length. The data were analyzed by variance and continued analyzed by Duncan Multiple Range Test. The results showed that the level of IAA concentration gave effect (P<0,05) to time of shoot emergence and shoot length. Level of BAP concentrations gave significant effect (P<0,05) to the time of bud break, time of shoot emergence, and shoot length. The interaction between the concentration level of IAA and BAP had significant effect (P<0,05) on the time of bud break, time of shoot emergence and shoot length. Keywords : Guava, Psidium guajava, Side Grafting, IAA, BAP.
Keragaman warna bunga m1 tanaman aster (Callistephus chinensis) Hasil induksi mutasi iradiasi sinar gamma
Authors: Rizqiani Yanuar , Kusmiyati Florentina , Anwar Syaiful
Published: February 2018

The aims of research was to determine the effect of gamma ray on the flower colour of Daisies. The research design was completely randomized design with five replicates. The irradiation treatment of gamma ray were 0 Gy, 5 Gy, 10 Gy, 15 Gy, 20 Gy. Parameters observed were stalk length, time of flowering, number of flowers, flower diameter, and flower colour. The collected data were analyzed by analysis of variance (ANOVA) and continued by Least Significance Different (LSD) of 5% level. The result showed that irradiation of gamma ray did not affected stalk length, number of flowers, and time of flowering. The gamma ray irradiation had a significant effect on flower diameter. Gamma ray irradiation significantly decreased the diameter of flower. The flower colour at doses 0 Gy (control) was purple. Colour flower was varied from dark purple to pink at irradiation 10 Gy and 15 Gy. Keywords: Callistephus chinensis, mutation, irradiation, colour of flower.
Cladoceran abundance in relation to water quality parameters of Chakki Talab, Bodhan, Telangana
Authors: Lingampally Vasudha , Solanki V.R. , Anuradha D. L. , Raja Sabita
Published: February 2018

In the present study an attempt has been made to evaluate water quality and related density of Cladocerans for a period of one year, October 2015 to September 2016. Water quality parameters such as temperature, PH, total dissolved solids, dissolved oxygen, biological oxygen demand, total alkalinity, total hardness, chlorides, phosphates, and nitrates are presented here to relate with the abundance of Cladocerans. The Cladoceran abundance reflects the eutrophic nature of the Chakki talab.
Presenting traffic analysis zone method for origin-destination statistics operations in Iran
Authors: Hadavand Samaneh , Tabesh Fahimeh , Motevalli Hossein
Published: February 2018

Traffic zoning has been studied less than other transport modeling processes. In network analysis and transport
planning studies, a point is usually introduced as the center of a zone for each traffic area, and urban areas were
considered as centers of gravity in the country's traffic zoning for the purpose of carrying out origin -destination
studies. After determining the homogeneous centers, in this study, 5 criteria: load and passenger were produced and
absorbed and the population was the factor of weighting cities, the boundaries of the regions according to the
similarity, coherence, proportionality of the area, the facilitation of the statistical process, statistical access , presence
of the gravity and the number of areas were determined. In the first step, based on weighting items (5 items in total),
a preliminary list of cities was extracted. According to this list, seven scenarios were designed and prioritized to cities
that were weighted in 5 items based on the data recorded in the bill of lading and the face of the situation in the Road
Transportation Organization as well as the population in the Center of Statistics of Iran. Finally, according to the
Pareto principle, centers of gravity were obtained. The four final scenarios were also studied considering the
country's roads on provincial, city, district and rural scale. Finally, the boundary of the regions was determined on the
basis of the boundaries of the cities. Then, considering and prioritizing the country's important shipping points such
as terminals, mines, economic regions, customs, ..., the adjacent parts of these points were carried out with
homogenous centers, aggregation and reduction of their number. According to these areas the country will eventually
be divided into 124 districts, 776 stations were selected for the purpose of collecting the origin-destination data
Measurement of Uranium Concentration in Some Soil Samples in Tuwaitha site in Baghdad using CR-39 Detector
Authors: W. Ratwita , Y. Sukandar E. , K. Adnyana I. , F. Kurniati N.
Published: February 2018

The research aims to measure the uranium concentration of soil samples collected from different regions are located
around the nuclear research center at Tuwaitha to a contamination ratio statement of these regions, which include
agricultural residential regions as well as being the regions for livestock of all kinds. The nuclear track detector (CR39)
was used as a method to detect uranium of through calculations depended on comparison with standard samples.
Results indicate that the uranium concentration ranged between (0.4ppm) and (2.538 ppm), these results are within
allowed limit that equals (11.7 ppm).
Comparison of Charging and Discharging Period Analysis of Phase Change Materials-Paraffin Wax and Myristic Acid
Authors: Nair Ajay M. , Naidu P Vinod Kumar
Published: February 2018

The present work is focussed on the experimental study of a PCM storage unit for thermal energy storage. Thermal
energy storage systems are temporary storage of the thermal energy at high or low temperature and is a very
essential tool to reduce the mismatch between supply and demand of energy. These also play very important role in
energy conservation. In this experiments two PCM’s Paraffin wax and Myristic acid are compared by analysing their
charging and discharging (storing) period, which is done in a simple and economically fabricated experimental set
up. It is found that Myristic acid took only 2 hours and 25 minutes for complete charging while it was around 3 hours
and 7 minutes for Paraffin wax. During storage period analysis it is evident that the Myristic acid stored heat better
than Paraffin. However the drop in temperature of Myristic acid was just 70C in 8hours whereas it was around 120C
for Paraffin wax in the same time period.
Analysis of Paraffin Wax as a Phase Change Material
Authors: Nair Ajay M. , Naidu P Vinod Kumar
Published: February 2018

As the energy demand increases and with the conventional fossil fuels depleting, the energy crisis in the near future is
bound to worsen. Moreover fossil fuels have adverse effects on the environment so it is required to switch on to
renewable sources of energy to meet the energy requirements. Especially solar energy is abundantly available but it is
intermittent, unpredictable, and available only during the day. An efficient thermal energy storage system is required
for storing the surplus energy available during light hours so that it can be used during nights. This paper is focused
on the charging and discharge analysis of Paraffin wax (melting temperature of 58-600C) which is used as phase
change material in thermal energy storage system. To analyse the performance of Paraffin wax, a simple and
economical experimental setup has been constructed that consists of solar parabolic concentrator, hot water bath,
water pump, test section, insulation boxes, T type thermocouple and Data acquisition system. In the experiment
conducted, the water which gets heated due to the solar parabolic concentrator charges the Paraffin wax in the test
section. Once the Paraffin wax gets fully charged, it is taken out and kept in the insulation box .The temperature
variation with time while charging and discharging is recorded. It is found that Paraffin wax took 3 hours and 7
minutes for getting completely charged and it took 15 hours 28 minutes for discharging i.e. there was a temperature
drop of 20.86 0C from the initial temperature of 69.9 0C
Effect of Slotted holes on performance of Disc Brake
Authors: Priyadarsini Ch.Indira
Published: February 2018

The disc brake is a device for slowing or stopping the rotation of a wheel. Repetitive braking of the vehicle leads to
heat generation during each braking event. Transient Thermal Analysis of the Rotor Disc of Disk Brake is aimed at
evaluating the performance of disc brake rotor of a car under severe braking conditions and there by assist in disc
rotor design and analysis. Disc brake model and analysis is done using ANSYS workbench 16.0. The main purpose of
this study is to analysis the thermo mechanical behaviour of the dry contact of the brake disc during the braking
phase. The coupled thermal-structural analysis is used to determine the thermal stresses and to calculate the Heat
fluxes in x-y-z planes. This is established Slotted type and analysis is done by taking two different components such as
Cast Iron and Stainless Steel and comparing which material is best suited for making of a disc brake.
Performance evaluation and COP calculation of Triple effect vapour Absorption machine working on Solar Thermal energy
Authors: Rasheed Rather Nasir Ul , Singh S. K. , Nazir Umair
Published: February 2018

The research paper deals with performance evaluation of a triple effect vapour absorption machine based on lithium
bromide solution. The triple effect VAM at the National Institute of Solar Energy also has a provision of storage of
heat and cool in PCM (phase change material) where excess heat from the solar field at peak hours is stored and the
excess cooling effect generated at part load is stored in different PCM chambers when no radiation is available,
especially at night time. The water in this mixture is the absorbent or refrigerant and Lithium Bromide is the
absorber. The required heat source temperature is usually above 80°C for single-effect machines and the COP is in the
range of 0.6 to 0.7. In triple effect systems, COP of 1.7 has been demonstrated at 2100C.
Studying a multistory building with different types of bracing
Authors: Hasan Ahmed Falah , Kamil Ban Ali
Published: February 2018

In this paper the effect of different types of bracing had been studied besides studying the effect of height of building.
Two different height was studied the first one was a 6-story and 10-story. The studied types of bracing included the V,
X, K, and none bracing building. The X bracing is the best type for resist high lateral load,. The building without
bracing give maximum story drift and the building may be collapse due to unstability because the lateral load (wind
load), the V-bracing give a little different from X-bracing with low cost and easy for construction from X-bracing,
and the building is highest the X-bracing is the beast type for bracing.
Additive Manufacturing: A next gen fabrication
Authors: Subhedar Prajakta
Published: February 2018

A class of technologies referring to Rapid Prototyping (RP) or Additive or Layer Manufacturing or 3D Printing allows designers to quickly create tangible prototype instead of using two dimensional pictures. This technology produces models and prototype parts from 3D CAD model data created from 3D object digitizing systems. Rapid Prototyping forms parts by joining together liquid, powder or sheet materials. Physical models are built using three basic stages: pre-processing, building, post-processing. Pre-processing consists of generation of CAD model, convert into STL format and slice the STL files into cross sectional layers. In building process, construction of model takes place one layer atop another. Post process consists of cleaning and finishing the final model. Common types of Rapid Prototyping technologies popular in industry are: Steriolithography, Fused Deposition Modeling, Selective Laser Sintering, Laminated Object Manufacturing,3 D Printing. The selection of the processes depends upon the material to be cured to build the final model. Rapid Prototyping technologies are used in various industries like Automobiles, Consumer products, Medical, Academics, Aerospace, Government and Military. This poster talks about few challenges to be considered in Rapid Prototyping like shrinkage and distortion of final model, mechanical performance of RP model and limitations to mass quantity. : Layer Manufacturing, CAD Model, STL format, Steriolithography, Fused Deposition Modeling, Selective Laser Sintering.
Full-Scale Well Instrumented Large Diameter Bored Pile Load Test in Multi Layered Soil: A Case Study of Damietta Port New Grain Silos Project
Authors: Eid M. , Hefny A. , Sorour T. , Zagh Y.
Published: February 2018

A Large diameter bored pile with diameter of 1.00 m and length of 34.00 m has been implemented in multi layered soil. The pile was tested under three axially loading and unloading cycles, in order to determine the load settlement curve and assess the ultimate pile capacity. Extensive investigation was carried out to obtain reliable soil properties at the examined pile location, through in situ and laboratory soil tests. Twelve strain gauges were fixed on pile steel reinforcement bars at top of each soil layer level. Moreover, four dial gauges were set up at pile head. Also, three telltales were extended to three different levels inside the pile. The pile load test field measurements are presented in the form of load settlement and load distribution curves for different loading steps. In addition, the pile ultimate capacity is calculated using different codes criterions and compared with the loading test results. Large diameter bored pile, Settlement, Pile load distribution, Pile installation, Instrumentation, Full scale pile load test, Pile behavior.
Utilization of Taguchi Approach to Investigate the Effects of Cutting Parameters on Surface Finish of AISI 1020 Steel while turning
Authors: Singh Mandeep , Kumar Ashwani
Published: February 2018

To judge the success of a machining operation, surface finish of the machined parts is one of the important criteria. The value of optimum machining parameters (for better surface finish) can be either decided on the basis of a large number of experimental trails or design of experiments (DoE) can be used to predict the same with significantly lesser number of experimental trails. The aim of this work was to reveal the application of Taguchi method to study the effect of the machining/cutting parameters for surface finish during turning of AISI 1020 steel under different cutting environments. The results revealed that spindle speed was the most influential factor which affected surface roughness in dry turning as well as wet turning. However, depth of cut was second influential factor in dry turning but feed rate was more influential than depth of cut during wet turning Machining, Turning, Steel, Surface finish, Taguchi, Minitab, Anova
A Survey on Road Traffic Sign Recognition System using Convolution Neural Network
Authors: Hatolkar Yuga , Agarwal Poorva , Patil Seema
Published: February 2018

Road Traffic accidents is one of the major reason for deaths taking place in India. These accidents not only result into
serious injuries but may also lead to deaths. Image recognition technology is one of the widely used techniques used in
various fields in research like agriculture, medicine, automobile etc. At present, majority of the Image recognition
techniques use artificial feature extraction technique which is not only time consuming but also is very complex.
Hence, various researchers are basically working in order to improve the algorithms, and make them more and more
efficient and robust. Initially, traditional principle of convolution neural network was introduced briefly. Its
numerous applications in the domain of Image Processing were presented. Finally, the challenges faced by
Convolution Neural Network in terms of time complexity and accuracy were analyzed, and then our recent work was
introduced in order to overcome the efficiency related issues.
Impact des extraits éthyliques des feuilles de Hexalobus Monopétalus sur lemétabolisme protéiques des rats Wistar
Authors: Rodrigue Akotegnon , Loetitia Michodjehoun , Justin Behanzin , Elisabeth Houeze , Alphonse Sezan
Published: February 2018

The aim of this study was to evaluate the impact of the ethyl extract of dried leaves of Hexalobus monopetalus on
protein metabolism in Wistar rats. After a phytochemical screening of extracts, total protein, urea, uric acid and
creatinine were measured spectrophotometrically at six (06) sets of three (03) Wistar rats each. Batches 2 to 6 were
given with orally administered respectively the daily doses of: 0.25 mg / kg, 0.5mg / kg, 1mg / kg, 1.5mg / kg and 2.5mg
kg body weight of the extracts (for 14 days). The lot1 witness received distilled water instead of the extract. The results
of the phytochemical screening revealed the presence polyphenolic compounds (gallic tannins, catechin tannin or
condensed, anthocyanins, and leuco anthocyanins), flavonoids, mucilages reducing compounds, alkaloids, certain
anthracene derivatives ( free anthracene, the O-glycosides), Steroids, and quinone derivatives. It was observed a
significant increase (p ˂ 0.05) blood levels of total protein and uric acid and a significant (p ˂ 0.05) blood urea and
creatinine levels in treated plots to extracts. These observed variations did not depend on the administered dose of the
extracts but were depending on the duration of treatment; they were outstanding from the 7th day of treatment.
The long term use of ethyl extract of dried leaves of Hexalobus monopetalus could compromise the liver function and the
kidneys and may inhibit apoptosis in Wistar rats.
Cognitive Mapping of the Noun Domains When Zero-deriving Proper from Common Nouns in Macedonian
Authors: Vaneva Marjana
Published: February 2018

Noise induced hearing loss NIHL is irreversible sensory neural deafness in one or both ears which develops gradually due
to chronic exposure to injurious noise. In this study there were 92 workers chosen under exclusion and inclusion criteria,
most of the samples study were male due to hard handling working, 40% of the samples studied were complaining of
SNHL (sensory neural hearing loss) are variable from mild to sever one. Although they have normal otoscopic finding,
the longer the duration of noise exposure the more damaging effect with SNHL result. There are no preventive measures
used in our sample study. NIHL is preventable disease which needs the role of social media in education of peoples.
Early Detection of Peripheral Neuropathy in Type II Diabetes Mellitus by SUDOSCAN
Authors: AL- Khawaja Sameer Abd AL-Majeed , Al-helu Sabah Ali Jaber , Jumaa Yasir Salah
Published: February 2018

Backgrounds: Sudomotor dysfunction is one of the earliest neurophysiologic abnormalities to manifest in distal small
fiber neuropathy. SUDOSCAN ® was developed to provide a non invasive, quick, simple and quantitative measurement of
sweat function. The aim of this study is to evaluate the value of SUDOSCAN in the diagnosis of neuropathy and its early
detection.
Methods: This is a case control study was conducted from March 2014 to December2014 on type2 diabetic patient in
the center of diabetes and endocrine disease in AL-Najaf . Sweat function was evaluated by measuring the
electrochemical skin conductance (ESC) of the hands and feet.
Results: 100 patients with type 2 diabetes mellitus including 55 patients with peripheral neuropathy and 45 patients
without peripheral neuropathy were involved in this case control study. Hands and feet conductance were lower in
patients with type 2 diabetes with peripheral neuropathy when compared to patients with type 2 diabetes without
neuropathy (with p value less than 0.001 for hands mean electrochemical skin conductance and feet mean electrochemical skin
conductance).
Conclusions: SUDOSCAN is a promising, screening tool to detect neuropathy in patients with diabetes mellites. This is a
very simple test, easy-to-perform that can be done in the clinical setting in 3–5 min.
Videostroboscopic Evaluation of the Vocal Cords before and after Microlaryngeal Phonosurgery for Benign Lesions
Authors: Hassoun Yasir Lafta , Shaheed Karrar Mohsin , Al-Turaihy Ehsan Hameed
Published: February 2018

Background: Benign vocal lesions are common clinical and surgical problems affecting individuals with high vocal
demand. These lesions are assessed and treated in different ways. Good phonatory function can be achieved by proper
diagnosis, perfect surgical technique and good voice rehabilitation. Videostroboscopy is an important tool to assess the
dynamic properties of vocal cord mucosa, the phonatory functional part.
Study design: Prospective cross-sectional study.
Objectives: To evaluate the postoperative results of microlaryngeal phonosurgery by the use of videostroposcopy.
Method: Twenty patients with benign vocal lesions were included and studied. Videostroboscopic examination was
undertaken preoperatively, one week and one month postoperatively.
Results and discussion: There were significant differences of videostroboscopic parameters between preoperative and
postoperative examinations; there was an improvement in most of these parameters one week after surgery, except for,
closure pattern and duration of closure where they had been shown to be improved one month after surgery.
Conclusion: Videostroboscopy is an excellent tool to assess and understand vocal cord mucosal vibration changes before
and after microlaryngeal phonosurgery and recommended to be used in routine outpatient examination of patients with
benign vocal lesions especially those who required surgical treatment .
Anger among Adolescents: The Role of Mindfulness
Authors: Dhawan Ashu , Singh Sandeep , Taruna Taruna
Published: February 2018

Adolescence is considered as the transitional stage of development wherein the transformation from childhood to
adulthood takes place. This is the period of optimum health accompanied with biological and psychological changes.
Along with various emotional changes among adolescents anger has been reported to have serious consequences than
any other emotion. Anger is mainly responsible for hostility and violence (Pullen, 2015). The research studies have
constantly explored the causative factors of anger in this developmental age group. The present research study made an
attempt to explore the relationship between the two dimensions of anger namely, the state anger and the trait anger
along with the trait of mindfulness. The sample of the present study was comprised of 200 adolescents (N=200). StateTrait
Anger Expression Inventory (STAXI-2, Spielberger, 1996) and Mindful Attention Awareness scale (MAAS, trait
version, Brown and Ryan, 2007) were used to measure the variables of the study. Findings of the present study revealed
the significant negative correlation (r = -.176 lesthan .01) between the trait of mindfulness and trait anger. Furthermore, the
findings also established the significant positive correlation between state anger and trait anger (r = .518 lesthan .05). No
gender difference for the trait of mindfulness and anger was reported in the study.
Changing Tax Policy Impacts on the Risk Level of Viet Nam Wholesale and Retail Firms
Authors: Amri Faisal S. Al
Published: February 2018

Many financial markets including but not limit to, the emerging stock market in Viet Nam, have been affected by the
financial crisis 2007-2009. This study analyzes the impacts of tax policy on market risk for the listed firms in the
wholesale and retail industry during this period as it becomes necessary. First, by using quantitative and analytical
methods to estimate asset and equity beta of total 9 listed companies in Viet Nam wholesale and retail industry with a
proper traditional model, we found out that the beta values, in general, for many companies are acceptable. Second,
under 3 different scenarios of changing tax rates (20%, 25% and 28%), we recognized that there is not large disperse in
equity beta values, estimated at 0,646, 0,653 and 0,657.These values are much lower than those of the listed VN
construction firms. Third, by changing tax rates in 3 scenarios (25%, 20% and 28%), we recognized both equity and asset
beta mean values have positive relationship with the increasing levels of tax rate. Finally, this paper provides some
outcomes that could provide companies and government more evidence in establishing their policies in governance.
Assessment of Maternal Plasma Homocysteine levels among Sudanese Pregnant Ladies with Preeclampsia
Authors: Ahmed Rasha Eltayeb , Abdelatif Ali Nour Mahmoud
Published: February 2018

Objective: The aim of this study was to evaluate if there is association between preeclampsia and plasma homocysteine

levels and moreover to investigate its association with the severity of the disease.

Material and method: A case control study was performed on a total of 61 pregnant patients, classified to 31

preeclamptic ladies and 30 normotensive pregnant ladies. Homocysteine levels were assessed using A15 analyzer.

Results: Plasma homocysteine levels were significantly higher in preeclamptic ladies than normotensive pregnant ladies

(13.25±4.35) mol/L with significant difference (P.value: 0.000). Higher levels of plasma homocysteine with a mean

(16.4585) mol/L were associated to the severity preeclampsia with significant difference (P.value: 0.000).

Conclusion: Plasma homocysteine levels were significantly increased in preeclamptic ladies
Reinforcement of Topologically Weak Power Networks Through Network Structural Characteristics Theory
Authors: Alayande Akintunde Samson , Jimoh Adisa Abdul-Ganiyu , Yusuff Adedayo Ademola
Published: February 2018

In power system, utility engineers are often faced with the challenge of reinforcing weak power networks without adding any new infrastructures. This paper analyses the topological structure of a topologically weak network and then institutes a way of reinforcing the network through restructuring. The proposed scheme explores the concept of network structural characteristics of power networks in conjunction with the shortest electrical distance from graph theory. The branch impedances of new sets of candidate transmission lines that could possibly reinforce the existing structurally weak network are determined. The standard IEEE 5-bus and 30-bus test systems are used to illustrate the effectiveness of the proposed scheme. The results obtained show that the proposed approach is generally useful in power system network design, planning and efficient operation.
Modeling of inter- and transgranular stress corrosion crack propagation in polycrystalline material by using phase field method
Authors: Nguyen Thanh-Tung , Réthoré Julien , Baietto Marie-Christine , Bolivar José , Fregonese Marion , Bordas Stéphane P.A.
Published: February 2018

A coupled multiphysics phase field framework is proposed to model anodic dissolution induced by stress corrosion fracture growth at microstructual level. The effects of electrochemical-mechanical processes (including crystal anisotropy) are all taken into account. This new model is based upon: (i) an anisotropic phase transformation model based on a variational formulation to describe material dissolution along preferential directions; (ii) an efficient description of grain boundaries as a smeared cohesive zone; (iii) an explicit approximation to model the different electrochemical behaviors between grain boundary and grain interior. Both intergranular and transgranular stress corrosion cracking is simulated in an efficient manner. The abilities of the proposed model are illustrated through several numerical examples involving a full prediction of complex crack network growth induced by stress corrosion cracking within 2D polycrystaline models.
Altruismus aus Sicht der Sozialen Neurowissenschaften
Authors: Windmann Sabine , Hein Grit
Published: February 2018

Altruismus ist ein verblüffendes Phänomen, vor allem aus Sicht der Biologie und der Ökonomie. Warum geben Individuen anderen etwas von ihren Ressourcen ab und verringern damit ihre eigenen Möglichkeiten? Die Antwort auf diese Frage kann auf ultimater oder proximater Ebene gesucht werden. Die Sozialen Neurowissenschaften versuchen, die Gehirnmechanismen zu spezifizieren, die Menschen dazu antreiben, altruistisch zu handeln, denn äußerlich gleiches Verhalten kann durch unterschiedliche Motive bedingt sein. Aktivierungen und funktionelle Konnektivitäten der Anterioren Insula und der Temporoparietalen Junction spielen bestimmbare Rollen bei empathiebasiertem versus strategischem Altruismus, während der dorsolaterale präfrontale Kortex, neben anderen Regionen, bei punitiven Formen von Altruismus involviert ist. Zukünftige Forschungsarbeiten könnten sich auf die Verarbeitung von Ambiguität und Konflikt in der Verfolgung altruistischer Absichten beziehen.
Voluntary deep inspiration breath-hold reduces the heart dose without compromising the target volume coverage during radiotherapy for left-sided breast cancer
Authors: Al-Hammadi Noora , Caparrotti Palmira , Naim Carole , Hayes Jillian , Rebecca Benson Katherine , Vasic Ana , Al-Abdulla Hissa , Hammoud Rabih , Divakar Saju , Petric Primoz
Published: February 2018

Background

During radiotherapy of left-sided breast cancer, parts of the heart are irradiated, which may lead to late toxicity. We report on the experience of single institution with cardiac-sparing radiotherapy using voluntary deep inspiration breath hold (V-DIBH) and compare its dosimetric outcome with free breathing (FB) technique.

Patients and methods

Left-sided breast cancer patients, treated at our department with postoperative radiotherapy of breast/chest wall +/– regional lymph nodes between May 2015 and January 2017, were considered for inclusion. FB-computed tomography (CT) was obtained and dose-planning performed. Cases with cardiac V25Gy ≥ 5% or risk factors for heart disease were coached for V-DIBH. Compliant patients were included. They underwent additional CT in V-DIBH for planning, followed by V-DIBH radiotherapy. Dose volume histogram parameters for heart, lung and optimized planning target volume (OPTV) were compared between FB and BH. Treatment setup shifts and systematic and random errors for V-DIBH technique were compared with FB historic control.

Results

Sixty-three patients were considered for V-DIBH. Nine (14.3%) were non-compliant at coaching, leaving 54 cases for analysis. When compared with FB, V-DIBH resulted in a significant reduction of mean cardiac dose from 6.1 +/– 2.5 to 3.2 +/– 1.4 Gy (p < 0.001), maximum cardiac dose from 51.1 +/– 1.4 to 48.5 +/– 6.8 Gy (p = 0.005) and cardiac V25Gy from 8.5 +/– 4.2 to 3.2 +/– 2.5% (p < 0.001). Heart volumes receiving low (10–20 Gy) and high (30–50 Gy) doses were also significantly reduced. Mean dose to the left anterior coronary artery was 23.0 (+/– 6.7) Gy and 14.8 (+/– 7.6) Gy on FB and V-DIBH, respectively (p < 0.001). Differences between FB- and V-DIBH-derived mean lung dose (11.3 +/– 3.2 vs. 10.6 +/– 2.6 Gy), lung V20Gy (20.5 +/– 7 vs. 19.5 +/– 5.1 Gy) and V95% for the OPTV (95.6 +/– 4.1 vs. 95.2 +/– 6.3%) were non-significant. V-DIBH-derived mean shifts for initial patient setup were ≤ 2.7 mm. Random and systematic errors were ≤ 2.1 mm. These results did not differ significantly from historic FB controls.

Conclusions

When compared with FB, V-DIBH demonstrated high setup accuracy and enabled significant reduction of cardiac doses without compromising the target volume coverage. Differences in lung doses were non-significant.
Associatons Between Self-Reported Well-being and Neuromuscular Performance During a Professional Rugby Union Season
Authors: Hills Samuel P. , Rogerson David J.
Published: February 2018

Hills, SP, Rogerson, DJ. Associatons between self-reported well-being and neuromuscular performance during a professional rugby union season. J Strength Cond Res 32(9): 2498–2509, 2018—Self-reported wellness is often used to monitor fatigue responses to training and competition. Constraints within team sports mean short-form wellness questionnaires are typically preferred to literature-validated documents. This research aimed to assess the relationship between self-reported wellness and neuromuscular (NM) performance during a professional rugby union season, and to identify changes in these parameters over a 12-week period. On the first training day each week, before activity, 37 players rated 5 wellness subscales (“fatigue/vigor,” “upper-body soreness,” “lower-body soreness,” “mood,” and “sleep quality/duration”) on a 1–5 Likert scale (1 representing the lowest wellness), and 5-repetition countermovement jumps (CMJs) were completed after a warm-up. Each week, total wellness, wellness subscales, and 4 CMJ measures for each participant were calculated as change from baseline. Within-participant correlations were determined between changes in wellness and CMJ measures, whereas week-to week differences and differences from baseline were assessed using Wilcoxon signed-rank tests. Within-participant correlations were compared for players grouped by age and position. Wellness and CMJ scores fluctuated according to physical stress, persisted beneath baseline throughout, and showed declining trends over 12 weeks. Very large (r = 0.7–0.89)/large (r = 0.5–0.69) correlations were identified between wellness and CMJ variables (positive: velocity, dip, time; negative: duration), and each wellness subscale displayed large/very large positive correlations with CMJ velocity. This was true for all subgroups, although subtle differences existed between ages and positions. It was concluded that players' subjective wellness is a useful tool, ideally used within a broader monitoring scheme, for monitoring ongoing NM fatigue, which increased from week to week.
Normative Reference Values for High School-Aged American Football Players
Authors: McKay Brianna D. , Miramonti Amelia A. , Gillen Zachary M. , Leutzinger Todd J. , Mendez Alegra I. , Jenkins Nathaniel D.M. , Cramer Joel T.
Published: February 2018

McKay, BD, Miramonti, AA, Gillen, ZM, Leutzinger, TJ, Mendez, AI, Jenkins, NDM, and Cramer, JT. Normative reference values for high school-aged American football players. J Strength Cond Res 34(10): 2849–2856, 2020—The purpose of the present report was to provide test- and position-specific normative reference values for combine test results based on a large, nationally representative sample of high school-aged American football players in their freshman, sophomore, and junior classes. Cross-sectional anthropometric and performance data were obtained from 12 different high school American football recruiting combines between March 7, 2015, and January 9, 2016, across the United States. Subjects included a sample (n = 7,478) of high school-aged American football athletes in their junior (n = 3,779), sophomore (n = 2,514), and freshman (n = 1,185) classes. The database included combine date, school state, position, class, height, body mass (BM), 40-yard dash, pro-agility, 3-cone, vertical jump, broad jump, and power push-up. Each player self-classified their American football positions as defensive back, defensive end, defensive linemen, linebacker, offensive linemen, quarterback, running back, tight end (TE), or wide receiver. Test- and position-specific normative values were generated by aggregating data from freshman, sophomore, and junior classes. Mean differences were found among classes for all positions and all measurements (p ≤ 0.05), except for TE BM (p > 0.05). Greater differences for all variables were observed from freshman to sophomore classes than from sophomore to junior classes. These normative reference values may provide realistic comparisons and evaluations in performance for young American football players, parents, and coaches with collegiate football aspirations. High school strength and conditioning professionals should use these norms to set attainable goals and reward accomplishments for young football players.
Force-Velocity Relationship in Three Different Variations of Prone Row Exercises
Authors: Loturco Irineu , Suchomel Timothy , Kobal Ronaldo , Arruda Ademir F.S. , Guerriero Aristide , Pereira Lucas A. , Pai Chi N.
Published: February 2018

Loturco, I, Suchomel, T, Kobal, R, Arruda, AFS, Guerriero, A, Pereira, LA, and Pai, CN. Force-velocity relationship in three different variations of prone row exercises. J Strength Cond Res 35(2): 300–309, 2021—This study examined the force-velocity relationship and tested the possibility of determining the relative loading intensity percentage of 1 repetition maximum (%1RM) in 3 different variations of prone row exercises. Thirty male top-level athletes from 2 different sports (National Team rugby union players and professional mixed martial arts fighters) were submitted to maximum dynamic strength assessments in the free prone bench pull, bent-over barbell row, and bent-over Smith machine row, after standard procedures encompassing lifts performed from 40 to 100% of 1RM. The mean velocity, mean propulsive velocity, and peak velocity were measured in all attempts. Linear regression analyses were performed to establish the relationships between the different measures of bar velocities and %1RM. The actual (obtained during the assessments) and predicted 1RM values (based on the predictive equations) for each exercise were compared using a paired t-test. In all exercises, the predicted 1RM scores—based on all velocity variables—were not different from their respective actual values. The close linear relationships between bar velocities and distinct %1RM (coefficient of determination ≥80%, in all experimental conditions) allow precise determination of relative load and maximum dynamic strength, and enable coaches and sports scientists to use the different velocity outputs to rapidly and accurately monitor their athletes on a daily basis.
APPLICATION OF RESPONSE SURFACE METHODOLOGY TO OPTIMIZE MICROWAVE-ASSISTED EXTRACTION OF TOTAL PHENOLIC COMPOUNDS FROM CAUCASIAN WHORTLEBERRY
Authors: KUTLU KANTAR Naciye , BIÇAK Cansu , EKİNCİ Duygu , KILIÇ Ezgi , ERDEM Naz , İŞCİ YAKAN Aslı , ŞAKIYAN DEMİRKOL Özge
Published: February 2018

Microwave-assisted extraction
(MAE) is commonly used in recent years as an innovative approach to enhancing
the quality of extracts while decreasing the extraction time and the solvent
consumption in comparison to conventional techniques. In this study, the
influence of microwave power, solid concentration and extraction time on total
phenolic content (TPC), colour values and dielectric properties of Caucasian
whortleberry were investigated. The process variables were optimized using
response surface methodology. The highest TPC from Caucasian whortleberry was
obtained at an extraction time of 3.5 min, a solid concentration of 15% and a
microwave power of 360 W. The results showed that L* and a* values of the
extracts were highly correlated with TPC by a second-order polynomial.
Moreover, no significant difference was found in dielectric properties between
the groups.
La recrianza humanizada: Un giro a las relaciones de poder y al paradigma adultocéntrico en las instituciones de protección de niños, niñas y adolescentes en situación de vulneración de derechos
Authors: Zuluaga-Gómez Armando
Published: February 2018

This reflection is based on the notes recorded in a field journal and its objective is to systematize the experience acquired as an educator in the Diagnostic and Derivation Center, operated by the University of Antioquia through the Grow with Dignity Project (Zuluaga, 2015-2016), attached to the Unit of Childhood, in the City of Medellín, Colombia, whose purpose is the immediate protection of children and adolescents in situations of violation of rights. We will analyze, here, the power relations that are established within the adult-centered paradigm; we will reveal the genesis of child abuse in these relations, and we will see how these normalized practices in the upbringing of children by their families of origin permeate the protection institutions that have been created to accomplish processes of restoration of rights. When unequal power relationships are instituted and legitimated within the family, the hegemony of adults over childhood is consolidated, and the latter ends up being objectified, like this normalizing their abuse. These relational paradigms are also susceptible to reproduction in educational institutions, including those aimed at the protection of children in situations of violation of rights. We will suggest a proposal called humanized reeducation, which is indicated for group leadership in protection institutions, a task entrusted to educators.
The Teaching Model through Problem-Based Learning in a Course on Bibliographic Research
Authors: Hernández-Ching Ruth Cristina
Published: February 2018

The experience of applying problem-based learning (PBL) technique in the Bibliographic Research course from a Bachelor of English study plan of a public university during the first half of 2014 is shared. The investigation aimed to answer the following question: Does the problem-based learning technique in the Bibliographic Research course allows to implement the main tenets of the teaching model: epistemological foundation, learning theory, methodology and didactics, and communication processes? The research approach proposed was qualitative, and triangulation for measuring variables was implemented. The following instruments were applied: observation, experience record books, and focus groups. Furthermore, formative learning was measured by means of an online survey. Results of the instruments were categorized using technology-based tools such as Wordle (observation), NVivo (record books) and MindNode (focus groups). A convenience sampling was used to collect data from eight students enrolled in the Bibliographic Research course, ten students of Integrated English II for non-English majors, and the researcher, as professor of the courses. It was determined that the PBL technique permitted to reach the main tenets of the teaching model. It was identified that the teacher was the main learner, and the one who benefited from the process, since a culture of knowledge, throughout the course, was created. It was also concluded that this technique allowed to develop twenty-first century skills. It would be valuable to quantify whether the development of the four basic skills of English, especially the conversation one, improves using the technique along with technologies.