bluuebunny/crossref_metadata_2025_split huggingface dataset:
A Summarized Review on Friction Stir Welding for Aluminum Alloys
Authors: Gadallah Nabil , Sabry Ibrahim , Ghafaar M.Abdel 
Published: February 2020

This paper explains the precept and methodology of FSW. It covers some of the technical sides which influence the process and quality of FSW joint. Large advance has been accomplished in friction stir welding (FSW) of aluminum in every side of tool manufacture, microstructure properties estimate in the last decennia. With the development of reliable welding tools and precise control systems, FSW of aluminum has reached a new level of technical maturity. influence on butt joint arrangement is studied. Effect on welding quality of main parameters: rotation speed, travel speed, tool tilt angle, axial force and weld time has been studied. Finally, FSW is identified as an additional area for research can be carried out in the welding science.
Creativity Management: An Approach For Achieving Efficient Workplace Environment
Authors: Ain Omar Mohamed , Khodeir Laila Mohamed 
Published: February 2020

Workplace environment is defined as the current conditions of the surroundings of a workplace. More than 80% of performance problems are influenced by the workplace environment where efficiency of workplace environment represents the total amount of work done by one employee in a single day. There are different types and traits of employees in Architectural Design firms , where only 5 types are being analyzed in this research paper which encounters; creative, innovative ,Talented , Technical & Analytical Architects that should be considered to achieve an efficient workplace environment. Hence , The Problem of this paper the inefficient management creating inefficient management for architects results in the dissatisfaction of employees while boosting the rate of turnovers impacting the productivity negatively. One approach that has been introduced to tackle such problem is creativity management which could embrace the 5 types of employees in Architectural design firms. Thus, the main purpose of this study is introducing how creativity management approach can effect the workplace environment and increase its efficiency in Architectural design firms . To achieve the aim of this paper , a comprehensive literature review analysis has been done on recently published Research papers from 2000 to 2018. This includes discussing the contribution of authors on the approaches for efficient workplace environment , and introducing creativity management approach in workplace environment in Architectural Design firms. Hence, Findings of this paper took the form of impact analysis , where the effect of creativity management approach on achieving efficient workplace has been identified.
Photodegradation of microcystin-LR by pyridyl iron porphyrin immobilized on NaY zeolite
Authors: Wang Shulian , Zhang Huiqin , Ge Hongmei , Shi Yafei , Li Zhu 
Published: February 2020

Abstract
A novel photocatalyst, FeTPyPY, was prepared by immobilizing water-soluble tetra(4-pyridyl)phenyl iron-porphyrin (FeTPyP) on NaY zeolite to degrade microcystin-LR (MC-LR), one of the most toxic microcystins (MCs). UV-Vis analysis, UV-Vis diffuse reflectance spectroscopy, infrared spectroscopy, cyclic voltammetry and transmission electron microscopy were employed to characterize immobilized FeTPyPY. Under visible light (λ ≥ 420 nm), MC-LR was degraded utilizing immobilized FeTPyPY by activating molecular oxygen. The results showed that 85% of MC-LR was efficiently degraded by FeTPyPY with loading amount 100:1 (mNaY:mFeTPyP) after 300 min of visible light illumination. Moreover, FeTPyPY was stable in the degradation system with pH 7.0. The degradation mechanism was evaluated using electron spin resonance, and the results demonstrated that highly reactive oxygen species (•OH radical) were generated in the system to degrade MC-LR. Therefore, immobilized FeTPyPY was available to break down the toxic groups within MC-LR by utilizing environmental •OH radical under circumneutral condition.
Przywiązanie podstawą wychowania rodzinnego do relacji
Authors: Potočárová Mária 
Published: February 2020

Autorka z perspektywy interdyscyplinarnej prezentuje wybrane teorie wyjaśniające fenomen przywiązania i odczytuje go w kontekście wychowania rodzinnego. Przez to eklektyczne postępowanie zmierza do wyodrębnienia wiedzy adekwatnej do potrzeb współczesnych rodziców, których kompetencje w zakresie relacji wewnątrzrodzinnych wydają się niewystarczające i wymagają podjęcia działania pedagogicznego.
Artykuł składa się z pięciu sekcji. W pierwszej przedmiotem analizy jest fenomen przywiązania w ujęciu teorii J. Bowlby’ego. W drugiej sekcji zidentyfikowano go w wychowaniu rodzinnym. Trzecia sekcja zawiera wskazania odnośnie sposobu kształtowania relacji przywiązania przez wychowanie rodzinne. W czwartej i piątej ten sam problem rozważany jest od strony rozwoju osobowości i socjalizacji rodzinnej.
Uterine Dnmt3a is not Required for Mouse Embryo Implantation
Authors: Li Na , Lu Siyu , Ding Yubin , Chen Xuemei , He Junlin , Liu Xueqing , Chen Mengyue , Zhang Juanjuan , Su Yan , Zhang Xue , Wang Yingxiong , Gao Rufei 
Published: February 2020

Background:
Recent studies have demonstrated that endometrial DNA
methylation is essential for embryo implantation during early pregnancy. Dnmt3a is one
of the key enzymes for DNA methylation and could be expressed in the endometrium
regularly at this stage.

Objective and Methods:
In this study, we conditionally ablated uterine Dnmt3a using
progesterone receptor-cre (Pgrcre) to define the physiological roles of Dnmt3a in female
reproduction.

Results:
We found that ovarian function was not apparently altered and the number of
embryo implantation sites in Dnmt3aloxP/loxP Pgrcre/+ (cKO) was not significantly varied
during early pregnancy. Western blotting and immunohistochemistry results showed no
difference in expression or location of the estrogen receptor α (ERα) and mucin 1
(Muc1), the marker of uterine receptivity. Although the expression of decidual markers,
matrix metalloproteinase-2 (Mmp2), matrix metalloproteinase-9(Mmp9), and bone
morphogenetic protein-2 (Bmp2), was slightly decreased in Dnmt3a cKO females, the
gross morphology of mice uteri during decidualization was not significantly influenced. In
the artificial induction of the decidualization model, there was also no remarkable
difference in visually observed morphology or uterine weight in Dnmt3a cKO. Lastly, a
continuous breeding study showed that the fertility of Dnmt3a cKO female mice was not
strikingly altered.

Conclusion:
Overall, these results demonstrated that although some decidual markers
are expressed abnormally, conditional knockout of Dnmt3a in the uterus did not
significantly affect the endometrial function during embryo implantation; the embryo
could implant into the endometrium normally.
Impact of Ultrasound Therapy on Stem Cell Differentiation - A Systematic Review
Authors: Amini Abdollah , Chien Sufan , Bayat Mohammad 
Published: February 2020

Objective:
This is a systematic review of the effects of low-intensity pulsed ultrasound
(LIPUS) on stem cell differentiation.

Background Data:
Recent studies have investigated several types of stem cells from different sources
in the body. These stem cells should strictly be certified and promoted for cell therapies before being
used in medical applications. LIPUS has been used extensively in treatment centers and in research to
promote stem cell differentiation, function, and proliferation.

Materials and Methods:
The databases of PubMed, Google Scholar, and Scopus were searched for
abstracts and full-text scientific papers published from 1989-2019 that reported the application of
LIPUS on stem cell differentiation. Related English language articles were found using the following
defined keywords: low-intensity pulsed ultrasound, stem cell, differentiation. Criteria for inclusion in
the review were: LIPUS with frequencies of 1–3 MHz and pulsed ultrasound intensity of <500
mW/cm2. Duration, exposure time, and cell sources were taken into consideration.

Results:
Fifty-two articles were selected based on the inclusion criteria. Most articles demonstrated that
the application of LIPUS had positive effects on stem cell differentiation. However, some authors recommended
that LIPUS combined with other physical therapy aides was more effective in stem cell
differentiation.

Conclusions:
LIPUS significantly increases the level of stem cell differentiation in cells derived mainly
from bone marrow mesenchymal stem cells. There is a need for further studies to analyze the effect of
LIPUS on cells derived from other sources, particularly adipose tissue-derived mesenchymal stem cells,
for treating hard diseases, such as osteoporosis and diabetic foot ulcer. Due to a lack of reporting on standard
LIPUS parameters in the field, more experiments comparing the protocols for standardization of
LIPUS parameters are needed to establish the best protocol, which would allow for the best results.
Synthesis of Dihydrazones as Potential Anticancer and DNA Binding Candidates: A Validation by Molecular Docking Studies
Authors: Sridhara Malavalli B. , Rakesh Kadalipura P. , Manukumar Honnayakanahalli M. , Shantharam Chavalmane S. , Vivek Hamse K. , Kumara Humegowdeenahally K. , Mohammed Yasser H.E. , Gowda Dale C. 
Published: February 2020

Background:Accounting for mortality nearly one in four of human and second highest leading cause of death worldwide. Every year, about 10 million new cancers are diagnosed and causing major health issues in both developing and developed countries.Methods:A series of new dihydrazones were synthesized and screened for in vitro anticancer activity against three different MDA-MB-231, A546 and MCF7 cell lines and validated by DNA binding and molecular docking approaches.Result:In the present investigations, synthesized compounds 21, 22, 23 and 24 exhibited potent anticancer activity against tested cancer cell lines and DNA binding study using methyl green comparing to Doxorubicin and ethidium bromide as a positive control respectively.Conclusion:The Structure Activity Relationship (SAR) showed that the electron withdrawing groups (-Cl, -NO2, - F, and -Br) favored the DNA binding studies and anticancer activity whereas, electron donating groups (-OH and - OCH3) showed moderate activity. In the molecular docking study, binding interactions of the most active compounds 21, 22, 23 and 24 stacked with A-T rich regions of the DNA minor groove by surface binding interactions were confirmed. Further, the tuning of active analogs for targeted therapy was warranted.
Preparation and Characterization of Highly Fluorescent TGA-CdTe Quantum Dot-Hyamine 1622 Additive Composite
Authors: Kudrat-E-Zahan Md. , Yildiz Salih Zeki , Yazici Senem Colak 
Published: February 2020

Objective:
The aim of the present study was to prepare highly luminescent additive composite
polymer with hyamine 1622 and Thioglycolic Acid (TGA) coated CdTe Quantum Dots (QDs).

Methods:
The additive nano-composite was synthesized by the colloid synthesis method for the first
time. The properties like particle size, fluorescence efficiency, fluorescence imaging, self-assembling,
quantum dots, encapsulation, etc. were characterized by the employing of instrumental techniques
such as 1H and 13C NMR, Fourier Transform Infrared spectroscopy (FT-IR), BAB image analysis system
spectroscopy, Atomic Force Microscopy (AFM), Transmission Electron Microscopy (TEM) and
Energy Dispersive X-Ray Spectroscopy (EDS).

Results:
CdTe quantum dots were stabilized successfully in the solid phase by hydrophobic conversion
with hyamine 1622 as the cationic surfactant. The experimental results show that the prepared
composite is ideal for various applications, easily synthesized, safe, and maintain good fluorescence
properties.

Conclusion:
The newly prepared additive nanocomposite having sharp and narrow excitation/
emission properties is expected to be applicable in biomedical/analytical systems.
Impact of Drain Underlap Length Variation on the DC and RF Performance of Cylindrical Gate Tunnel FET
Authors: Dash Sidhartha , Mishra Guru P. 
Published: February 2020

Introduction:
Here, we present an n-channel cylindrical gate tunnel FET with drain
underlap engineering (CGT-DU) and the simulation process is carried out using a 3-D device
simulator from Synopsys.

Methods:
The analog and radio frequency (RF) performance of the device has been studied
extensively in terms of the electric field, energy band analysis, drain current, gain bandwidth
product, unity gain cut-off frequency, transconductance frequency product, and maximum
oscillation frequency for different values of drain underlap length.

Results:
The increase in underlap length in CGT paves the way for a substantial reduction in
ambipolar current without degrading the ON-state current. The proposed device exhibits lower
lateral electric field, larger tunneling length and lower gate to drain capacitance at the drain end
with a higher underlap length.

Conclusion:
CGT-DU exhibits superior ambipolar and RF performance without degrading ONstate
current and threshold voltage.
Heat Transfer Augmentation in Solar Collectors Using Nanofluids: A Review
Authors: Anbarsooz Morteza , Amiri Maryam , Rashidi Iman , Javadi Mohammad 
Published: February 2020

Background:
Enhancing the heat transfer rate in solar collectors is an essential factor for
reducing the size of the system. Yet, various methods have been presented in the literature to increase
the heat transfer rate from an absorber to the heat transfer fluid. The most important methods are: the
use of evacuated receivers, addition of swirl generators/turbulators and use of various nanofluids as
the heat transfer fluid.

Objective:
The current study reviews the achievements in the enhancement of solar collectors’ heat
transfer process using various types of nanofluids. The review revealed that the most widely employed
nanoparticles are Al2O3 and Carbon nanotubes (CNTs) and the most popular base fluid is water. Most
of the investigations are performed on indirect solar collectors, while recently, the researchers focused
on direct absorption methods. In the indirect absorption collectors, the thermal conductivity of the
working fluid is essential, while in a direct absorption collector, the optical properties are also crucial.
Optimization of the optical parameters along with the thermophysical properties of the nanofluid is
suggested for the applications of solar collector.
De eerste resultaten van de veldsurvey in Ayios Vasilios (Laconië, Griekenland)
Authors: Wiersma Corien 
Published: February 2020

The first results of the field survey of Ayios Vasilios in Laconia (Greece).
At Ayios Vasilios, remains of a Late Bronze Age palatial site have been identified by means of geophysical survey and excavations. The Ayios Vasilios Survey Project was initiated in 2015, among other things to investigate the extent and spatial development of the site though time. In this article, the preliminary results of the pedestrian field survey of the site are presented. The survey data show that pre-Mycenaean habitation at the site was of limited extent. The settlement expanded rapidly in the Late Helladic III period, but also the Mycenaean palatial settlement was small compared to other known palatial settlements: ca 5-6 ha. The rapid expansion and limited size may be better understood when contextualized with social and political developments in the Sparta Basin.
Een gehoorkapsel van een grijze walvis (Eschrichtius robustus) uit Wijster (Dr.)
Authors: Prummel Wietske , de Vries Lisette , Laarman Frits , van den Hurk Youri 
Published: February 2020

A bulla tympanica of a grey whale (Eschrichtius robustus) from Wijster (Dr.).
The animal remains from the native Roman-period village at Wijster (province of Drenthe) were published by Dr Anneke T. Clason in 1967. Most of the remains are poorly preserved cattle and horse bone fragments. About half of them come from animal graves in farmyards or along village roads, which most probably are ritual deposits. At the beginning of 2018, Ernst Taayke found among the material from a grave of a horse and a cow, animal grave 12, an unidentified bone, find number 1266, that he did not recognize. The bone was found to be a bulla tympanica of a grey whale (Eschrichtius robustus), a very rare find. Animal grave 12 was a ritual deposit in the yard of farmhouse 77, dated 3rd/4th century AD. In this paper we discuss how we established the whale species, the possible origin of the whale bone and the meaning of the whale bone in this ritual deposit of a horse and a cow.
‘Hier wil ik nog niet dood gevonden worden’. Bespiegelingen over de absentie van graven
Authors: Rom Iris , de Roest Karla 
Published: February 2020

Dead and gone: On the absence of graves.
Every now and then, archaeologists come across periods or regions that seem to lack graves. Instead of addressing these absences, researchers often resort one of several standard explanations, such as “We haven’t found the burial location yet” or “Apparently, these people employed ways of disposal that cannot be traced in the archaeological record”. While such observations are entirely justifiable, they also leave many unaddressed questions. Did this society opt for archaeologically invisible ways of disposal of their loved ones? Why are these graves missing? Case studies from our PhD projects on mortuary archaeology, relating, respectively, to the Bronze Age in Greece and the Iron Age in northwestern Europe, aim to investigate such questions. Whereas archaeologists are generally reluctant to interpret “non-data”, we pose that the absence of graves also provides invaluable clues as to how people perceived life and death in prehistoric societies.
Circadian Rhythms in the Telephone Calls of Older Adults: Observational Descriptive Study
Authors: Aubourg Timothée , Demongeot Jacques , Provost Hervé , Vuillerme Nicolas 
Published: February 2020

BackgroundRecent studies have thoughtfully and convincingly demonstrated the possibility of estimating the circadian rhythms of young adults’ social activity by analyzing their telephone call-detail records (CDRs). In the field of health monitoring, this development may offer new opportunities for supervising a patient’s health status by collecting objective, unobtrusive data about their daily social interactions. However, before considering this future perspective, whether and how similar results could be observed in other populations, including older ones, should be established.ObjectiveThis study was designed specifically to address the circadian rhythms in the telephone calls of older adults.MethodsA longitudinal, 12-month dataset combining CDRs and questionnaire data from 26 volunteers aged 65 years or older was used to examine individual differences in the daily rhythms of telephone call activity. The study used outgoing CDRs only and worked with three specific telecommunication parameters: (1) call recipient (alter), (2) time of day, and (3) call duration. As did the studies involving young adults, we analyzed three issues: (1) the existence of circadian rhythms in the telephone call activity of older adults, (2) their persistence over time, and (3) the alter-specificity of calls by calculating relative entropy.ResultsWe discovered that older adults had their own specific circadian rhythms of outgoing telephone call activity whose salient features and preferences varied across individuals, from morning until night. We demonstrated that rhythms were consistent, as reflected by their persistence over time. Finally, results suggested that the circadian rhythms of outgoing telephone call activity were partly structured by how older adults allocated their communication time across their social network.ConclusionsOverall, these results are the first to have demonstrated the existence, persistence, and alter-specificity of the circadian rhythms of the outgoing telephone call activity of older adults. These findings suggest an opportunity to consider modern telephone technologies as potential sensors of daily activity. From a health care perspective, these sensors could be harnessed for unobtrusive monitoring purposes.
PIPELINE PROGRAM CDM DI INDONESIA: SEBUAH PELUANG DAN TANTANGAN UNTUK INDUSTRI PERTAMBANGAN
Authors: Adiansyah Joni Safaat 
Published: February 2020

Climate change is one of the world’s problems that must be dealt; the failure in tackling climate change will impact on increasing the earth temperature and endanger the archipelago countries including Indonesia. Clean Development Mechanism (CDM) is one of the Kyoto Protocol mechanisms designed to mitigate climate change. Indonesia is one of the countries that meets the requirement as the host of CDM program and has set up the target to reduce GHG emissions as much as 26 percent in year 2020. The industrial sector has opportunities to engage actively in reducing GHG emission including mining industry. The objectives of this research are to find out the potency of mining company’s involvement in climate change mitigation efforts particularly through CDM. In addition, the research of method that is chosen is literature study including reviewing data relating to CDM and with qualitative approached. The result shows that mining industry has a potency to involve actively in CDM program, among others, through energy efficiency, fuel substitution, renewable energy, Coal Bed Methane and the handling of critical lands through afforestation and reforestation scheme. Furthermore, by using Business as Usual assumption, the linier regression that is produced y=27.255.x + 12.711 therefore It is estimated that about 15 Mt CO2-e (assuming 4 percent reduction) needs to be derived from the energy sector in 2020 that can be taken as an opportunity for the mining industry as well.
Pengaruh Desain Stent pada Jumlah Limfosit dan Trombosit Kelinci (Oryctolagus Cuniculus)
Authors: Siswomihardjo Widowati , Widyasrini Dyah Anindya , Arifianto Dinar , Budhi Setyo , Taufiq Nahar 
Published: February 2020

Percutaneous Coronary Intervention (PCI) is an effective treatment for coronary artery diseases. For the procedure, a stent is put in the coronary arteries. There are a variety of stent materials and designs available on the market. The development of stents continues with the goal to reduce the risk of failure. The design and the ability of the stent as a vascular scaffold are important factors for the success of the stent. The implantation of a stent as a foreign body can lead to inflammation. In general, the inflammation is characterized by an increased number of lymphocytes. Then, platelets play a role in coordinating the occurrence of inflammation and immune response. This study aims to determine the effect of stent design on the number of lymphocytes and platelets as a marker of inflammation. The study was conducted on ten rabbits divided into two treatment groups, namely KP1 (new design stent) and KP2 (commercial stent) by placing a stent on the iliac artery. One hour before stenting, 2 ml of blood was collected in all experimental animals. Then, 2 ml of blood was collected again on the 7th and 28th day after stenting. Data was collected based on the number of lymphocytes and platelets from all experimental animals. Statistical analysis using two-way ANOVA shows no significant difference (p> 0.05) on the number of lymphocytes and platelets between the two groups with different stent designs. It can be concluded that the design of a stent does not show a tendency to cause inflammation.