bluuebunny/crossref_metadata_2025 huggingface dataset:
The Unified Approach of Ionizing Radiation on Biological Matter: Action of Heavy Charged Particles on Mammalian Cells
Authors: Alkharam Ali S.
Published: April 2022

Damaging effects to mammalian cells by heavy charged particles have been realized in terms of the mean free path for linear primary ionization (the spacing of ionizing events along the charged particle tracks) using in vitro radiobiological experimentation data. Damage is found to be optimum when the mean free path for linear primary ionization along the tracks in the cell nucleus matches the mean chord length of approximately 1.8 nm through a DNA segment. A simple semi-theoretical model is proposed to define absolute biological effectiveness based on effect inactivation cross section s (mm2) which is interrelated to the mean free path for linear primary ionization l. For heavy charged particles, the model shows a saturation region for the effect cross section, ss = 60 mm2 for l ≤ 1.8 nm. The model explains the mechanisms leading to cell death via DNA strand scissions. In the saturation region, double strand breaks of the DNA are predominant, unrepaired or mismatched repair processes lead to maximum damage. At higher mean free path; l > 1.8 nm, single strand breaks of the DNA is the main basic mechanism and thus repairable processes are possible.
Ecological Study of an Artificial Saline Lake Ecosystem in Wadi Al-Shatti, Libya
Authors: Elssaidi Mohamed A.
Published: April 2022

This study provided the first data related to the ecosystem of Ain Al-Mashashiya Lake. It is likely the new apperance of a saline artificial lake formed from agricultural drainage water from surounded local farms, small lakes provide an opportunity to understand intra-ecosystem connectivity and its dynamics. Water samples were collected representing two stations along edges and at the middle of the lake and other samples surrounded soil and vegetation. Lake depth was > 5 meters, the pH was found to be relatively high at edge of the lake (7.46 & 7.44) compared to at middle of the lake (7.38 & 7.32). Highly saline water, i.e., 129.79 & 125.48 dS/m & 126.82 & 133.74 dS/m at edge and middle of the lake respectively. The average level of PO4 and NO3 during winter is slightly lower than summer. The water cations abundances were typically Na > K > Ca > Mg, where were for anions, Cl > SO4 > HCO3 > PO4 > NO3. The lake is valuable for biodiversity and provide habitat for many species. Five phytoplankton types have been registered, i.e., Cocconeis, Notholca Pandorina, Oscillatoria, Chlamydomonas. The most common species were Pandorina & Oscillatoria. Soils of the study zone were classified as sandy loam, with a porosity of 44.53%. and saturated hydraulic conductivity (Ks) values was 4×10-3 cm/h and 6.4% of OM content. The soil reaction (pH) was 7.24 and its EC value was 19.42 dS/m that indicated high saline affected soil. The concentrations of Na, Ca & Mg, were as high as 193, 48 & 14.4 mg/kg, respectively, with low NO3 content 0.293 mg/kg. Tamarix (Tamarix aphylla) commonly found along the lake edges. The dry desert climate of the area played a main role in imposing the lake ecosystems.
Laser treatment of chondromalacia lesions in the articular cartilage
Authors: Lychagin A. V. , Ivannikov S. V. , Yusupov V. I. , Semenova L. A. , Startseva E. D. , Surin V. V. , Tinkova I. O. , Naimann A. I. , Zharova T. A. , Przhevalsky P. A. , Yan Y.
Published: April 2022

Objective: to select optimal parameters of two-wave near-infrared laser irradiation for the arthroscopic treatment of chondromalacia foci  in the articular cartilage.  

Material and methods. Bull articular cartilages were treated with laser light delivered by a fifi ber and having various parameters. Human articular  cartilages with chondromalacia foci taken during the total knee replacement were also treated with laser light delivered by a fifi ber and having  various parameters. The processed cartilage samples were examined macroscopically and then histologically. Changes in the structure of ar[1] ticular cartilage after laser irradiation were assessed.  

Results. A two-second irradiation with two-wave laser light (λ = 0.97 μm / 30 W and λ = 1.55 μm / 15 W) causes a rapid “melting” of lesion margins  without macroscopically visible carbonization with a wide thermally affected zone in the irradiated area. Histologically, cartilage preparations  irradiated with two-wave laser light (wavelengths λ = 1.55 μm / 5 W and λ = 0.97 μm / 3 W) for 2 sec demonstrated slight changes in the cartilage  structure without thermal destruction of chondrocytes.

Conclusion. The optimal combination for laser irradiation of the cartilage tissue in the saline solution environment which restores articular cartilage  shape is two-wave laser light λ = 0.97 μm at power of 3 W and λ = 1.55 μm at power of 5 W from the distance of 1–2 mm under 2 sec exposure.
The Evolution of Induced Drag of Multi-Winglets for Aerodynamic Performance of NACA23015
Authors: Hamid Yusoff  , Koay Mei Hyie  , Halim Ghaffar  , Aliff Farhan Mohd Yamin  , Muhammad Ridzwan Ramli  , Wan Mazlina Wan Mohamed  , Siti Nur Amalina Mohd Halidi
Published: April 2022

Eagle is one of the most manoeuvrable and aerodynamically efficient bird capable of soaring for a mile, and it has high gliding ratio that can reach high velocities. Unmanned Aerial Vehicles () used in military and civilian applications are required to loiter at significant altitude without being targeted by observers. However, the induced drag is usually held mainly at the wingtip, which affects the performance of the in steady state condition due to wingtip vortex. Therefore, the objectives of this paper are to study the effect of multi-winglet on different configurations in the performance of lift and drag coefficients and to analyse the flow pattern of multi-winglet with difference configurations. The wing airfoil used was with chord length of and wingspan of . The multi-winglet device was simulated using software with three, five and seven multi-winglet configurations at angles of attack between -5° to 20° (with increment of 5°) and at flying speed of . This study found that seven multi-winglets demonstrated better results in lift and drag coefficients compared to other models at low angles of attack. In conclusion, multi-winglets can improve the aerodynamic performance of airfoil in reducing the induced drag and increasing the lift coefficient, which is suitable to be implemented at low angles of attack due to the bluffing body of winglet at high angles of attack.
Quadratic Convective Nanofluid Flow at a Three-Dimensional Stagnation Point with the g-Jitter Effect
Authors: Sharidan Shafie  , Mohamad Hidayad Ahmad Kamal  , Lim Yeou Jiann  , Noraihan Afiqah Rawi  , Anati Ali
Published: April 2022

The nonlinear density variation with temperature happens in many thermal applications like solar collectors, energy production, heat exchangers, and combustions, and it gives a significant impact on heat transfer and fluid flows. Thus, a nonlinear convective of an unsteady stagnation point flow under the influence of gravity modulation in the presence of water-based nanoparticles alumina (Al2O3) is studied here. Suitable variables are utilized to reduce the highly coupled nonlinear governing equations into a system of dimensionless simple partial differential equations. The Keller-box method is then applied to solve the consequent governing equations. Velocity and temperature profiles for various values of pertinent parameters are displayed graphically and discussed. The results indicate that the quadratic convection has enhanced the fluid flow and heat transport. Furthermore, the nonlinear convection parameter and the nanoparticles volume fractions have delivered a positive effect on the skin friction and the rate of heat transfer.
The Effect of Post-Heat Treatment on The Mechanical Properties of FeCrBMnSi Coatings Prepared by Twin Wire Arc Spraying (TWAS) Method on Pump Impeller From 304 Stainless Steel
Authors: Deni Fajar Fitriyana  , Samsudin Anis  , Abdul Rachman Al Qudus  , Mirza Aufa Nugraha Lakuy  , Rifky Ismail  , Sri Nugroho  , Gunawan Dwi Haryadi  , Athanasius Priharyoto Bayuseno  , Januar Parlaungan Siregar
Published: April 2022

The Twin Wire Arc Spray (TWAS) is one of the most widely used types of thermal spray coating because of its low cost, high efficiency and can also be used for mass production. However, heat treatment after the Fe-based amorphous coating process uses the TWAS method on pump impellers made of 304 stainless steel are not well documented. The purpose of this study is to determine the effect of post heat treatment after FeCrBMnSi coating with the TWAS method to increase wear resistance on pump impeller materials made of 304 stainless steel. In this study, NiAl and FeCrBMnSi were used as bond coats and top coats. Before the coating process, the substrate materials were sandblasted to obtain a surface roughness of 75 - 100 µm. The coating process is carried out by setting parameters of current spraying (A), voltage spraying (V), compressed air pressure (Bar), and standoff distance (mm) each of 150; 28.4; 5; and 400. Post heat treatment was carried out at a temperature of 500°C and 700°C for 3 hours using Furnace Chamber Thermolyne F6010. Tests of thickness, microhardness (ASTM 92-82), wear rate (ASTM G99-95A), micrography (ASTM E3), SEM, and adhesive strength (ASTM D- 4541) have been completed. The results of this study indicate specimens with post-heat treatment produce a coating layer with better mechanical properties than specimens without post-heat treatment. Specimens with post-heat treatment at a temperature of 700°C for 3 hours resulted in the smallest total wear rate of 6.6x10-4 mm3/s.
Fractional Model for the Flow of Brinkman-Type Fluid with Mass Transfer
Authors: Nadeem Ahmad Sheikh  , Dennis Ling Chuan Ching  , Hamzah Sakidin  , Ilyas Khan
Published: April 2022

The flow of fluid with mas transfer is an important phenomenon in the industries and nature. A new scheme for formulating the Caputo time fractional model for the flow of Brinkman-type fluid between the plates was introduced using the generalized Fick’s law. Within a channel, the free convection flow of the electrically conducted Brinkman-type fluid was considered. The governing equations were solved by the techniques of Fourier sine and the Laplace transform. In terms of the special function, namely, the Mittag-Leffler function, final solutions were obtained. To explain the conceptual arguments of the embedded parameters, separate plots are represented in figures. It is worth noting that for increasing the values of the Brinkman-type fluid parameter, the velocity profile decreases.
Presence of Riga Plate on MHD Caputo Casson Fluid: An Analytical Study
Authors: Ridhwan Reyaz  , Ahmad Qushairi Mohamad  , Lim Yeou Jiann  , Muhammad Saqib  , Sharidan Shafie
Published: April 2022

Driven by technological advancement, the Riga plate can be seen as a key feature in developing the engineering world. As such, this study aims to investigate the effects of an accelerating semi-infinite Riga plate over a convective flow of MHD Casson fluid incorporated with the Caputo fractional derivative. The obtained governing PDEs are converted in dimensionless form and reduced to systems of ODEs via Laplace transform. Zakian's method of inverse Laplace transform is then utilised to generate graphical results in the time domain. Variations of parameter such as Casson, modified Hartmann number, Grashof number, magnetic parameter and fractional parameters are investigated for velocity profiles. Skin friction coefficient is also calculated and presented numerically. Study shows that Riga plate aids in fluid flow, hence increasing its velocity.
هەلویستێن حكومەتێن تورگوت ئوزالی بەرامبەر بزاڤا چەكداریا پارتا كرێكارێن كوردستانێ‌ 1983-1989 (وەرگرتیە ژ ناما ماستەرێ)
Authors: Farsat Salman Veman , Mustafa Othman Khalil
Published: April 2022

ئەڤ ڤه‌كولینه‌ هاتیە تەرخانکرن بو لێكولینێ ل هه‌لویستێن حكومەتێن تورگوت ئوزالی لهەمبەری بزاڤا چەكداریا پارتا كرێكارێن كوردستانێ 1983-1989، یاخویایە ئێك ژ كێشەیێن هەرە مەزن و سەرەكی یێن توركیا كێشەیا كوردی یە، هەر ژ دامەزراندنا كومارا توركیا یا نوی لسالا 1923 حكومەتێن لدویڤ ئێكێن توركیا سیاسەتەكا توند هەمبەری كوردا پەیرەوكریە، و ژبەر ڤێ چەندێ كوردا دەست ب بزاڤ و یاخیبوونا كریە، ژوان بزاڤان ژی بزاڤا چەكداریا پارتا كرێكارێن كوردستانێ.  د هەردووجارێن ئوزالی حوكمرانی ل وەلاتی كری وەك سەروك وەزیران وی چەندین هەلویست و پێرابوون ئەنجامدان  ژ كێشەیا كوردی ب گشتی و بزاڤا چەكداریا پارتا كرێكارێن كوردستانێ ب تایبەتی، ژبۆ دیاركرنا ڤێ چەندێ مە ئەڤ ڤەكولینە دابەشكرە لسەر دەرازینك و دوو تەوەران. دەرازینك هاتیە تەرخانكرن بو  بارودوخێ سیاسیێ توركیا و دوزا كوردی 1971-1983. تەوەرێ ئێكێ: هاتیە تەرخانكرن بو پێكئینانا ئێكەم حكومەتا ئوزالی و هەلویست و پێرابوونێن وێ لدژی بزاڤا چەكداریا پارتا كرێكارێن كوردستانێ. تەوەرێ دووێ: هاتیە تەرخانكرن بو حكومەتا ئوزالی یا دووێ و پروژەیێن وێ لدژی پارتا كرێكارێن كوردستانێ. ڤەكولین گەهشتیە چەندین ئەنجامان ژ هەمیان گرنگتر، بزاڤا چەكداریا پارتا كرێكارێن كوردستانێ بوویە ئەگەرێ دروستبوونا ترس و لەرزەكا مەزن لجەم دەستهەلاتداریا توركیا، و سیاسەتمەتدارێن تورك مژویلكرینە ب ڤەكولین و دارێژتنا چەندین پلان و پروژان هەمبەر ڤێ بزاڤێ ژبو ژناڤبرنێ. هەروەسا ئوزالی هەمان سیاسەتا حكومەتێن بەری خو پەیرەوكریە هەمبەر كێشەیا كوردی و رابوویە ب ئەنجامدانا پروسەیێن لەشكەری بو بێدەنگكرنا بزاڤا چەكداریا پارتا كرێكارێن كوردستانێ.
Survey on Abstractive Transcript Summarization of YouTube Videos
Authors: S. Tharun  , R. Kranthi Kumar  , P. Sai Sravanth  , G. Srujan Reddy  , B. Akshay
Published: April 2022

Thousands of video recordings are created and shared on the internet every day. It is becoming increasingly difficult to spend time to watch such videos, which may take longer than anticipated, and our efforts may go in vain if we are unable to extract meaningful information from them. Summarizing transcripts of such videos helps us to quickly search for relevant patterns in the video without having to go through the entire content. Abstractive transcript summarization model is very useful in extracting YouTube video transcripts and generates a summarized version. An automatic summarizer's purpose is to shorten the time of reading, enable easier selection, be less prejudiced compared to humans, and portray content that is compressed while preserving the important material of the actual document. Extractive and abstractive approaches are the two most common ways to summarise text. Extractive approaches choose phrases or sentences from input text, whereas Abstractive methods generate new words from input text, making the task much more difficult.
Aplicación internacional del programa “Intervención multidimensional para la ansiedad social” (IMAS): II. Eficacia del tratamiento para problemas relacionados con la ansiedad social
Authors: Salazar Isabel , Caballo Vicente , Arias Víctor , Curtiss Joshua , Rossitto Alicia , Gómez Araujo Rosa , Herrera Puente Juan , Coello María , Gamarra Olivia , Sanguino Andrés Rosa , Hofmann Stefan , del Moral Bernal Susana , Herrera Giner Paula , Royuela Ángel
Published: April 2022

En un trabajo anterior (Caballo et al., 2021) comprobamos la eficacia del programa de Intervención multidimensional para la ansiedad social (IMAS) en la reducción de los síntomas de ansiedad social. En este estudio cuasiexperimental, con medidas pre/postratamiento y seguimiento, hallamos el impacto del programa IMAS en otros problemas relacionados con la ansiedad social. 57 personas diagnosticadas con un trastorno de ansiedad social (TAS), según el DSM-5, contestaron a cuestionarios que medían habilidades sociales, depresión, síntomas del trastorno de la personalidad por evitación, alcoholismo, autoestima, sensibilidad personal, preocupaciones y calidad de vida. Diferentes terapeutas llevaron a cabo el tratamiento en Ecuador, España y Paraguay. Los resultados mostraron importantes mejoras en el postratamiento en prácticamente todos los aspectos evaluados, mejoras que se mantenían a los seis meses. Los tamaños del efecto sobre la eficacia del tratamiento iban de medianos a grandes. Se comparó también el programa IMAS con terapia cognitivo conductual individual y tratamiento farmacológico, con resultados favorables para el programa IMAS. Este nuevo programa para el tratamiento de la ansiedad social tiene un impacto importante en otros problemas relacionados habitualmente con el TAS.
iENCUIST: Desarrollo y aplicación de una herramienta de apoyo psicológico online durante la Covid-19 en España
Authors: Halty Lucía , Halty Amaia , Gismero Elena
Published: April 2022

La herramienta online iENCUIST fue diseñada para reducir el impacto psicológico, tanto en la población confinada como en los profesionales que estaban a la vanguardia de la lucha contra la pandemia por Covid-19. En el primer estudio (N= 2.362) se muestran los resultados del test breve para realizar perfiles de personalidad, compuesto por 34 ítems que presentan buenas propiedades psicométricas. En el segundo estudio se presentan los perfiles psicológicos de los confinados y los profesionales que habían solicitado ayuda psicológica (N= 815). Los resultados indican que las mujeres confinadas presentan puntuaciones más altas en las variables de ansiedad, enfado o disgusto, colocando a este grupo en mayor riesgo de presentar problemas psicológicos. En cuanto a los profesionales, aquellos con más años de experiencia o que enfrentaron crisis pasadas tienen mayor estabilidad emocional, siendo un factor clave en la gestión de crisis. A las 6 semanas se evaluó la utilidad de la ayuda ofrecida por iENCUIST y casi el 80% de los usuarios indicó que aplicaron las recomendaciones que ofrece la herramienta y que les ayudaron a superar la crisis.
Psychometric properties of the General Help-Seeking Questionnaire in university students
Authors: Silva Abner , Salinas-Oñate Natalia , Gómez-Pérez Daniela , Barrera-herrera Ana
Published: April 2022

University students show a high prevalence of mental disorders and low levels of help-seeking for psychological problems. In Chile there are no valid and reliable measures of help-seeking intentions for this group. The aim of this study is to examine the psychometric properties of the General Help Seeking Questionnaire, vignette version (GHSQ-V) in a sample of university students from southern Chile. Results indicate that the GHSQ-V is a valid instrument, with a two-factor structure that reflects the existence of two dimensions of help-seeking sources (formal and informal), for five mental health problems that are prevalent among university students. Adequate levels of internal consistency and evidence of convergent validity were shown, although variability was found between subscales. The current study confirms the importance of an accurate measurement of help seeking intentions in university students, for a better understanding of a highly relevant process for the treatment of mental health problems in this group.
Path analysis of patriarchal and sexist beliefs, attitudes toward violence, and dating violence
Authors: Orozco Vargas Arturo , Venebra Muñoz Arturo , Aguilera Reyes Ulises , García López Georgina
Published: April 2022

Dating violence research needs to examine the perspective and experience that women and men have of this type of violence and the cognitive factors associated with it. In order to fill this gap, the objective of this research was to analyze the relations between patriarchal and sexist beliefs, attitudes favorable to physical, psychological, and sexual violence towards women and men, and the prevalence of dating violence. A total of 774 Mexican university students (52.33% women and 47.67% men) participated answering five instruments. In order to examine the data obtained, four path analysis models were created. The results showed that men have developed more attitudes supporting the use of physical, psychological, and sexual violence against women from the influence of patriarchal and sexist beliefs. Likewise, women who reported greater adherence to patriarchal and sexist beliefs presented more favorable attitudes towards physical, psychological, and sexual violence towards themselves. In turn, it was found that female participants who reported higher scores in the attitudes supporting sexual, psychological, and sexual violence towards themselves had a higher level of victimization. In conclusion, the four models revealed the impact that patriarchal and sexist beliefs have on dating violence through attitudes supporting violence towards women and men.
TÜRKİYE EKONOMİSİNDE GÜMRÜK VE LOJİSTİK FAALİYETLERİ İLE EKONOMİK BÜYÜME İLİŞKİSİNİN ARDL, FMOLS VE CCR YÖNTEMLERİ İLE ANALİZİ
Authors: ÖZBEK Sefa
Published: April 2022

Bu çalışmanın iki temel amacı bulunmaktadır. Bunlardan ilki Türkiye ekonomisinde 1990-2019 örneklem döneminde gümrük ve lojistik, enerji tüketimi, ticari küreselleşme ve ekonomik büyüme ilişkisini test etmektedir. İkinci amaç ise söz konusu ilişkinin hem ARDL sınır testi hem de FMOLS, CCR tahmincileri ile sınamak ve bulguların güvenilirliğini ortaya koymaktır. ARDL sınır testi bulguları adı geçen değişkenler arasında uzun dönemli ilişkinin varlığını göstermiştir. ARDL sınır testine ait kısa dönem tahmin sonuçlarına göre ticari küreselleşmede meydana gelen %1’lik bir artış ekonomik büyümeyi %1.76 düşürmekte; enerji tüketimi ve lojistik değişkenlerinin ekonomik büyüme üzerindeki etkisi ise istatistiki olarak anlamlı bulunmamaktadır. Uzun dönem bulguları ise ARDL, FMOLS ve CCR yöntemlerine göre lojistik ve enerji tüketiminde meydana gelen artışların ekonomik büyümeyi artırdığı; ticari küreselleşmenin ise ekonomik büyümeyi azalttığını göstermiştir. Söz konusu bulgular ARDL, FMOLS ve CCR yöntemlerinin benzer sonuçlar ortaya koyduğunu göstermekte ve sonuçların güvenilirliğini artırmaktadır. Türkiye’de elde edilen bu sonuçlar, sürdürülebilir ekonomik büyüme ve kalkınma için Gümrük Birliği üyesi ülke olma özelliğinin daha etkin kullanılmasının ve lojistik faaliyetlerine önem verilmesinin önemini ortaya koymuştır. Diğer yandan enerji tüketiminin ekonomik büyüme üzerindeki etkisi ise Türkiye’nin enerji konusundaki yatırımlara öncelik vermesinin gerekli olduğunu göstermektedir.
FİNANSALLAŞMA VE ENERJİ TÜKETİMİ İLİŞKİSİNİN ANALİZİ: TÜRK DEVLETLERİ TEŞKİLATI'NDAN AMPİRİK KANITLAR
Authors: TÜRKMEN Sena
Published: April 2022

Modern toplumun temelini oluşturan enerji, sosyal gelişme ve ekonomik büyümenin en önemli unsurlarından biridir. Literatürde enerji tüketimi ve ekonomik büyüme arasındaki ilişkiyi irdeleyen çok sayıda çalışma bulunmaktadır. Diğer taraftan, gelişmekte olan ülkelerin ekonomik büyüme sürecine katkı sağlamada önemli bir politika aracı olduğu kabul edilen finansal gelişme ile enerji tüketimi arasındaki ilişkiyi inceleyen pek fazla çalışmaya rastlanmamıştır. Bu çalışmanın amacı, Türk Devletleri Teşkilatı’na üye ülkeler olan Azerbaycan, Kazakistan, Kırgızistan, Özbekistan ve Türkiye’de finansal gelişme ve enerji tüketimi ilişkisini 1995-2018 dönemi için araştırmaktır. Ampirik analizlerde dinamik panel veri analizi yönteminden yararlanılmıştır. Yapısal kırılmaları dikkate alan testlerin uygulandığı çalışmada enerji tüketimi ile finansal gelişme arasında uzun dönemli ilişkinin varlığı tespit edilmiştir.
Ankara İl Merkezindeki Ortaokul ve Lise Öğrencilerinin Dijital Oyun Bağımlılığı ve Anne Baba Tutumlarının İncelenmesi
Authors: DENİZ Gülçin , AYDIN Saliha , ODABAŞ (ÇALIŞKAN) Deniz
Published: April 2022

Amaç: Bu çalışmada Ankara il merkezinde kamu ve özel okulda öğrenim gören ortaokul ve lise öğrencilerinde dijital oyun bağımlılığı ve ebeveyn tutumlarının incelenmesi amaçlanmaktadır.
Gereç ve Yöntem: Tanımlayıcı tipte olan bu çalışmanın evrenini 01 Eylül-01 Aralık 2019 tarihleri arasında Ankara il merkezinde yer alan kamu ve özel okulların ortaokul ve lise öğrencileri oluşturmuştur. Örneklem seçiminde kura yöntemi ile merkez ilçelerden iki ilçe seçilmiş ve kamu ve özel okulların seçimi için basit rastgele örneklem yöntemi kullanılmıştır. Buna göre her bir okul türünü temsilen toplam 10 okulda öğrenim gören 866 öğrenciye ulaşılmıştır. Veri toplama aracı olarak; kişisel bilgi formu, “Ergenler için Oyun Bağımlılığı Ölçeği’nin kısa formu ve Anne Baba Tutum Ölçeği kullanılmıştır. İstatistik değerlendirmede tek yönlü varyans (ANOVA), post hoc analizde Tukey yöntemi kullanılmıştır.
Bulgular: Öğrencilerin %50.2’si erkek, %63.2’si kamu okullarında ve %63.1’i lisede öğrenim gördüğü, %58.8’inin bilgisayarı, %46.4’ünün tableti, %82.0’ının kendine ait cep telefonu ve %88.8’inin evde internet bağlantısı bulunduğu, %77.5’inin bilgisayar/tablet/telefon vb. dijital oyun oynadığı, % 35.3’ünün 3.5 saat ve üzerinde sosyal medya kullandığı, %52.7’sinin birden fazla tür oyun oynadığı saptanmıştır. Anne Baba Tutumları Ölçeği değerlendirmesinde ailelerin %31.1’i demokratik, %24.3 ihmalkâr, %26.5’i otoriter ve % 18.1’i hoşgörülü tutum sergilediği ve anne baba tutumu farklılıklarının Dijital Oyun Bağımlılığı Ölçek puanını etkilediği saptanmıştır.
Sonuç: Dijital oyun bağımlılığı erkek öğrencilerde, anne baba ayrı/boşanmış olanlarda ve ihmalkâr tutum sergileyen ailelerin çocuklarında diğer gruplara göre daha yüksektir. Ayrıca anne, babanın tutumunun öğrencilerin not ortalamasını, dolayısıyla akademik başarısını etkilediği özellikle ihmalkâr tutum sergileyen ailelerin çocuklarının demokratik tutum sergileyen ailelere göre daha düşük akademik başarıya sahip olduğu saptanmıştır.
Sistem Pendukung Keputusan Penilaian Kinerja Guru Menggunakan Metode Simple Additive Weighting
Authors: Rahayu Suciana , Sindar Anita
Published: April 2022

Guru merupakan komponen yang paling berpengaruh terhadap terciptanya proses dan hasil pendidikan yang berkualitas. Oleh karena itu upaya perbaikan dilakukan untuk meningkatkan kualitas pendidikan. Sekolah tidak akan memberikan sumbangan yang signifikan tanpa di dukung oleh guru yang profesional dan berkualitas. Guru benar-benar dituntut untuk memiliki kinerja yang tinggi. Di sekolah-sekolah masih banyak terlihat adanya masalah kinerja guru, untuk meningkatkan kualitas kinerja guru di SMK 1 Negeri Labu melakukan penilaian kinerja guru setiap 3 bulan namun mekanisme kurang efektif disebabkan kurang transparan. Penelitian penilaian kinerja guru menggunakan sistem diterapkan untuk efesiensi dan transparansi. Sistem dikembangkan menggunakan metode SAW (Simple Additive Weighting). Metode SAW bagian dari Sistem Pendukung Keputusan (SPK) digunakan untuk membantu menentukan keputusan berdasarkan data alternatif dan data kriteria. Pengolahan data diimpelementasikan sesuai perhitungan metode SAW menentukan matrik keputusan selanjutnya membuat perangkingan dari seluruh total data alternatif. Dalam penelitian ini ada 20 guru yang dinilai dengan 10 kriteria penilaian, hasil perangkingan menunjukkan data alternatif A03 memperoleh nilai tertinggi, maka diputuskan A03 memiliki kinerja guru yang terbaik.
HUBUNGAN ANTARA KETUBAN PECAH DINI, LILITAN TALI PUSAT DAN PREMATURE DENGAN KEJADIAN ASFIKSIA BAYI BARU LAHIR DI PUSKESMAS SUKALARANG KABUPATEN SUKABUMI TAHUN 2021
Authors: Arpiyatni Dina Puspita
Published: April 2022

Asfiksia pada bayi baru lahir menjadi penyebab kematian 19% dari 5 juta kematian bayi baru lahir setiap tahun. Di Indonesia, angka kejadian asfiksia di rumah sakit propinsi Jawa Barat ialah 25,2%, dan angka kematian karena asfiksia di rumah sakit pusat rujukan propinsi di Indonesia sebesar 41,94%. Data mengungkapkan bahwa kira-kira 10% bayi baru lahir membutuhkan bantuan untuk memulai bernapas, dari bantuan ringan sampai resusitasi lanjut yang ekstensif. Tujuan dari penelitian ini adalah hubungan antara ketuban pecah dini, lilitan tali pusat dan premature dengan kejadian asfiksia pada bayi baru lahir di Puskesmas Sukalarang Tahun 2021. Metode pengumpulan data menggunakan kuesioner yang disebarkan kepada 30 responden. Metode analisis data yang digunakan dalam penelitian ini adalah analisis hubungan dengan metode pearson correlation menggunakan aplikasi SPSS Ver.25. Hasil penelitian ini, menunjukan bahwa ketuban pecah dini memiliki hubungan terhadap asfiksia dengan p value 0.000, lilitan tali pusat memiliki hubungan terhadap asfiksia dengan p value 0.000, dan prematur memiliki hubungan terhadap asfiksia dengan p value 0.000.
ÉVALUATION DE L’EFFICACITÉ DES TRAITEMENTS PHYSICOCHIMIQUES SUR LES PERFORMANCES MÉCANIQUES DES BÉTONS LIGNOCELLULOSIQUES CONFECTIONNÉS À PARTIR DE PULPES DE BETTERAVE
Authors: P. MONREAL
Published: April 2022

De récents travaux menés au LTI ont montré que la pulpe debetterave obtenue à partir de procédés d'extraction industrielle dusucre, pouvait être valorisée par son incorporation dans lafabrication de bétons lignocellulosiques à destination del'industrie du bâtiment. Cependant, malgré de très bonnescaractéristiques d'isolation thermique et des performancesmécaniques acceptables, il s'avère que les composites formulés àpartir de pulpes de betteraves non traitées présentent desproblèmes des variations dimensionnelles et des retards de prise,en raison du caractère hydrophile de la pulpe et à l'extraction decomposés organiques dans la matrice de ciment. Des traitementsphysico-chimiques ont été effectués afin de réduire cesproblèmes. L'efficacité de ces traitements a été évaluée via unecomparaison des performances mécaniques entre les composéscontenant la pulpe traitée ou non
Analysis Bachelor of Public Health Needs and Policy Constraints Aspects in the Health Department Konawe District
Authors: Syawaluddin Syawaluddin , Azizi Jayadipraja Erwin , Kamalia La Ode
Published: April 2022

Introduction: The initial survey conducted at the Konawe District Health Office shows that the distribution of Public Health Bachelors has not been evenly distributed until now, where there are still health centers in Konawe District which lack public health personnel. In addition, the management of the duties of the Bachelor of Public Health at the Health center is sometimes not in accordance with the main task. So that researchers intend to conduct research on "Analysis of the Needs of Undergraduate Public Health Workers and Constraints on Policy Aspects at the Konawe District Health Office"

Method: This study uses two types of research, namely descriptive quantitative and qualitative to analyze the constraints in the distribution bachelor of public health personnel. The sample was sourced from 137 bachelor of public health personnel from the Head of Public Health Center while the Head of Administration and Ordinary Informants were informants in this study spread from 29 Public health center.

Result: The need for public health workers in accordance with the Minister of Health Regulation No. 75 of 2014 at least 2 people per Health center and aspects of policies that have not been running optimally are obstacles in the distribution bachelor of public health personnel.

Conclusion: Local governments should carry out data-based Health Human Resources (HR) planning so that planning documents are able to accurately project the calculation of needs in accordance with the current health situation.
Comparisons between flour qualities produced by three different mills: buhler, quadrumat, and industry mills
Authors: Alhendi Abeer , Ahmad Tamadher H. , Albayati Wasan S. , Almukhtar Balsam Q. , Ali Zahraa K. , Al-Hayani Nuhoodh K.
Published: April 2022

Three types of mills (Buhler, Quadrumat, and industry mill) have been used to determine the effect of mill type on the quality of the produced flour. Quadrumat and Buhler mills are usually used to produce flour at a laboratory level. Flour quality has been determined physically, chemically, and rheologically. Results showed that the particle size of flour produced by Buhler mill (FPB) was finer (mostly less than 132 μm) than other produced flour, while flour produced by Quadrumat mill (FPQ) had 8% particle size bigger than 50gg, which is more than Iraqi accepted limit (5%). The moisture content of FPQ exceeded the moisture content limit (14%). While, all flour produced by industry mills (FPI) was within the Iraqi standard in term of particle sizes and moisture content. Gluten content of FPB was higher than other produced flours; however, most increments were not significantly different. The results also showed that using different mills has no clear effect on the gluten index and alpha-amylase activity. Farinogram and extensogram results showed that FPQ was stronger than other produced flour followed by FPI. In conclusion, the quality of FPQ was closer to the quality of FPI, however, Quadrumat mill needs to be adjusted to produce flour with finer particle sizes and lower moisture content. The Buhler mill, on the other hand, needs to be adjusted to produce flour with bigger particle size. Both laboratory mills (Quadrumat and Buhler) need to be adjusted to produce flour that expresses FPI correctly.
Influence of extraction methods on phenolic compounds from pulp and peel of genipap (Genipa americana L.) fruit
Authors: Faria Tenila dos Santos , Reis Miria Hespanhol Miranda , Reolon Schmidt Vivian Consuelo , Cardoso Vicelma Luiz
Published: April 2022

Brazil has a great variety of fruits which are rich in bioactive compounds, such as the genipap fruit. Both the peel and the pulp of genipap have beneficial components for health, making the study of this fruit important for the proper use of its functionalities. The objective of this work was the extraction of bioactive compounds from the peel and pulp of genipap by different techniques. Extraction processes were carried out using different devices (orbital incubator shaker, ultrasonic bath, and ultrasonic probe) and at different temperatures (40, 60, 70, 80 and 90 °C). The best process for extracting phenolic compounds from the pulp of genipap fruit was with the ultrasonic probe at 40 °C, which indicated the efficiency of applying the sound waves directly to the sample. Regarding the peel, the best method for extracting phenolic compounds was using the orbital incubator shaker at 80°C.
Enhancement of photoluminescence of monolayer transition metal dichalcogenide by subwavelength TiO2 grating
Authors: Tao Guang-Yi , Qi Peng-Fei , Dai Yu-Chen , Shi Bei-Bei , Huang Yi-Jing , Zhang Tian-Hao , Fang Zhe-Yu ,   School of Physics, State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Peking University, Beijing 100871, China,   Tianjin Key Laboratory of Photonics Materials and Technology for Information Science, Key Laboratory of Weak-Light Nonlinear Photonics, Ministry of Education, Photonics Research Center, School of Physics, Nankai University, Tianjin 300071, China,   Tianjin Key Laboratory of Micro-scale Optical Information Science and Technology, Institute of Modern Optics, Nankai University, Tianjin 300350, China
Published: April 2022

Transition metal dichalcogenide (TMDC) monolayers have direct band gaps and can produce strong photoluminescence(PL), thereby possessing a wide application prospect in photoelectric devices and photoelectric detection fields. However, their PL efficiency needs further improving because they are of atomic thickness only, besides, they have non-radiative recombination of excitons. In this study, a combination structure of a gold film, titanium dioxide subwavelength gratings and TMDC monolayers is designed, which can greatly improve PL efficiency of the TMDC monolayers. The spontaneous emission rate can be controlled by the Purcell effect, and the maximum enhancement of photoluminescence is as high as 3.4 times. In this paper, the PL signals of monolayer WS2 and monolayer WSe2 on the designed structure are studied. The feasibility of the enhancement of PL of the TMDC monolayers on the subwavelength grating structure is verified experimentally, which provides a new idea for the application of two-dimensional materials to optoelectronic devices.
The cardiac sarcoplasmic reticulum phospholamban kinase is a distinct δ‐CaM kinase isozyme
Authors: Baltas Leonidas G. , Karczewski Peter , Ernst-Georg Krause
Published: July 2002

Phospholamban is the regulator of the Ca2+‐ATPase in cardiac sarcoplasmic reticulum (SR). It is phosphorylated by a Ca2+/calmodulin‐dependent protein kinase (SRCaM kinase) which is closely associated with cardiac SR membrane preparations. We found that, upon renaturation of pig cardiac SR proteins, blotted onto PVDF membrane, two polypeptides of 54 and 52 kDa showed Ca2+/calmodulin‐dependent autophosphorylation. In Western blots of SR proteins, the 54/52 kDa polypeptides were recognized by an antibody specific for the δ‐CaM kinase isoforms, but not by an anti‐α‐CaM kinase. The two polypeptides were selectively immunoprecipitated from solubilized SR vesicles with the anti‐δ‐CaM kinase. The CaM kinase inhibitors KN‐62 and peptide CaMK‐(281–302) inhibited the activity of the SRCaM kinase with IC50 values in the same range with those obtained for the brain isozyme. In addition, initial autophosphorylation (Ca2+‐dependent) produced a partially Ca2+‐independent enzyme while further autophosphorylation (Ca2+‐independent) made the enzyme completely Ca2+‐independent. Based on these results we suggest that the SRCaM kinase is a distinct δ‐CaM kinase isozyme.
A novel phytyltransferase from Synechocystis sp. PCC 6803 involved in tocopherol biosynthesis
Authors: Schledz Michael , Seidler Andreas , Beyer Peter , Neuhaus Gunther
Published: July 2002

The deduced polypeptide sequence of open reading frame slr1736 reveals homology to chlorophyll synthase and 1,4‐dihydroxy‐2‐naphthoic acid phytyltransferase in Synechocystis sp. strain PCC 6803. In tocopherol and plastoquinone biosynthesis, a condensation reaction mechanistically similar to that of these two enzymes is performed. To analyze the function of this novel prenyltransferase, a deletion mutant of slr1736 was generated by homologous recombination. The mutant showed a markedly decreased tocopherol content, while plastoquinone levels remained unchanged. Since the aromatic precursor homogentisic acid accumulated in the mutant, the function of the enzyme was proven to be a novel tocopherol phytyltransferase.
Patterns of reproductive effort in male and female shrubs of Oemleria cerasiformis: a 6‐year study
Authors: Antos Joseph A. , Allen Geraldine A.
Published: July 2002

1 We monitored flowering and fruiting of individual male and female plants of Oemleria cerasiformis over a 6‐year period in a population in western Canada, and calculated fruit set (percentage of pistils maturing) and reproductive effort (RE) (gram of reproductive tissue per gram of leaf).

2 Over 6 years, male O. cerasiformis had on average much lower total RE, but much higher RE at flowering, than females.

3 In males, strong correlations between RE and light suggested that investment in reproduction was largely determined by light levels. There were strong positive correlations of RE between years, with no evidence of periodic fluctuations.

4 In females, in contrast to males, RE at flowering was not related to light. However, fruit set was strongly correlated with light. Flowering RE and fruit set were uncorrelated in females, indicating that these are affected by different factors.

5 Correlations of RE between years in females, although often significant, were lower than in males, indicating that RE fluctuates more between years in females than in males and may respond to past levels of RE. Flowering may reflect adjustments in response to past reproduction, or may be controlled by resources other than light. Fruit set was not significantly related to previous RE.

6 The greater total RE of females and their limited ability to adjust fruit set are probably major factors contributing to the greater mortality rates of females and the male‐biased sex ratios in O. cerasiformis.
Community mental health nurses and authority to prescribe medications: the way forward?
Authors: Mccann T. V. , Baker H.
Published: July 2002

This paper explores a single dimension of the nurse practitioner role — whether community mental health nurse practitioners should have authority to prescribe medications. The paper is taken from a larger study about how these nurses promote wellness with clients experiencing an early episode of psychotic illness. The focus is timely as several Australian States have recently passed nurse practitioner legislation. This qualitative study used interviews and participant observation to collect data. The fieldwork was undertaken in the community, in regional and rural New South Wales, Australia and involved community mental health nurses. The findings show that expanding the nurse practitioner role to include authority to prescribe medications is currently contentious. Respondents envisaged that prescribing authority would include most medications that are used to treat mental illness but exclude drugs that treat medical illness. They identified a need for an appropriate educational course, and called for a system of clinical supervision and ongoing support for nurses assuming this role. Participants also claimed that individual nurses who choose to forgo prescribing authority should not be coerced into undertaking this role. The findings have professional, clinical, legal and educational implications for nurses as they seek authority to prescribe within the context of a nurse practitioner role and these are discussed.
Evaluating photoscreeners II: MTI and Fortune videorefractor
Authors: Mbbs Carolyn D Cooper , Fraco Glen A Gole Md , Borthoptics Julie E Hall , Fraco Deborah J Colville , Fraco Susan M Carden , Mbbs Francis G Bowling PhD
Published: July 2002

Background: Amblyopia is a public health problem, usually amenable to treatment if detected early. Photoscreeners are camera‐based instruments which can detect risk factors for amblyopia such as squint, refractive errors and media opacities.

Objective: To evaluate two commercially available photoscreeners, namely the MTI photoscreener (Medical Technology, Iowa City, IA, USA) and the Fortune Optical VRB‐100 (Fortune Optical, Padova, Italy) videophotorefractor, in a selected childhood population, having a high prevalence of amblyopia, before undertaking a full‐scale trial in the general population.

Subjects and Methods: The study design was a double‐masked study. One‐hundred and five children aged between 12 and 44 months with either normal vision or known visual disorders were photoscreened without cycloplegia using the Fortune and the MTI photoscreeners. Each child had a full ophthalmic examination either on the day of screening or in the preceding 6 months. Risk factors were: any manifest strabismus (squint), hypermetropia >3.5 D, anisometropia ≥1 D sphere, myopia ≥2 D sphere, astigmatism ≥2 D, media opacity or fundus abnormality affecting vision. The prevalence of risk factors for amblyopia was 60%. Photoscreen images were reviewed by two independent masked observers for indicators of amblyopiogenic risk factors and compared to the full ophthalmological examination to determine sensitivity and specificity for each instrument.

Results: Sensitivities and specificities for the detection of risk factors for amblyopia were as follows. Fortune photoscreener: reader 1, sensitivity 60%, specificity 75%; reader 2, sensitivity 68% specificity 86%. MTI photoscreener: reader 1, sensitivity 56%, specificity 79%; reader 2, sensitivity 61%, sensitivity 86%. The results for reader 1 and 2 showed no significant differences for either instrument.

Conclusion: Both instruments performed unsatisfactorily in a study population aged 1–4 years with a high prevalence of amblyopiogenic risk factors. Accordingly, we do not believe that either instrument can be recommended to screen for eye disorders in children between the ages of 1 and 4 years because the low prevalence of amblyopia in this population demands very high sensitivity and specificity in order to avoid inappropriate over‐ or under‐referral.
Efficacy of 7 day lansoprazole‐based triple therapy for Helicobacter pylori infection in elderly patients
Authors: Pilotto Alberto , Franceschi Marilisa , Leandro Gioacchino , Bozzola Loredana , Fortunato Antonio , Rassu Mario , Meli Salvatore , Soffiati Giuliano , Scagnelli Mariuccia , Mario Francesco , Valerio Gianni
Published: July 2002

Background: The prevalence of Helicobacter pylori increases with age. However, data regarding the effects of anti‐H. pylori treatments in the elderly are very scarce.

Methods: To evaluate the effect of three lansoprazole‐based, 7 day, triple‐therapy regimens on H. pylori eradication rates, symptomatology, chronic gastritis activity and serological markers of H. pylori infection in elderly subjects, we studied 150 symptomatic patients over 60 years of age with H. pylori‐positive duodenal ulcer (DU, n = 34), gastric ulcer (GU, n = 19) or chronic gastritis (CG, n = 97). Patients were consecutively treated with one of the following regimens: (A) lansoprazole (LNS) 30 mg b.i.d. + clarithromycin (CLR) 250 mg b.i.d. + metronidazole (MTR) 250 mg q.i.d.; (B) LNS 30 mg b.i.d. + amoxycillin (AMOX) 1 g b.i.d. + MTR 250 mg q.i.d.; and (C) LNS 30 mg b.i.d. + CLR 250 mg b.i.d. + AMOX 1 g b.i.d.

Results: Two months after therapy, the eradication rates of the three treatments, expressed using both intention‐to‐treat and per‐protocol analyses were, respectively; group A, 86 and 91.5%; group B, 80 and 87%; group C, 82 and 89.1%. After therapy, a significant reduction in epigastric pain (P < 0.001), heartburn (P = 0.02), dyspepsia (P < 0.001) and vomiting (P < 0.005) was observed independently of the success of H. pylori eradication. A significantly higher percentage of asymptomatic patients were in the GU‐DU group than in CG group (87.7 vs 70.0%, P = 0.032). After therapy, 33 subjects still suffered from symptoms. Persistence of symptoms was significantly associated with an endoscopic diagnosis of oesophagitis and not with H. pylori infection. Patients cured of H. pylori infection showed a significant decrease in the histological activity of both antral and body gastritis (P < 0.0001), a significant drop in immunoglobulin (Ig) G anti‐H. pylori antibodies (P < 0.0001) and pepsinogen (PG) C (P< 0.0001) and an increase in the PGA/PGC ratio (P < 0.0001).

Conclusions: The 7 day, lansoprazole‐based triple therapy was well tolerated and highly effective in the cure of H. pylori infection, the reduction of symptoms, chronic gastritis activity and serum levels of IgG anti‐H. pylori antibodies and PGC. Persistence of symptoms after therapy was significantly higher in CG than GU and DU patients and was significantly associated with oesophagitis.
Molecular Phylogeny of Nicotiana (Solanaceae) Based on the Nucleotide Sequence of the matK Gene
Authors: Aoki S. , Ito M.
Published: July 2002

Abstract: Intrageneric relationships in the genus Nicotiana were investigated by comparison of DNA sequences of the matK gene of the chloroplast genome. A total of 40 taxa were examined in this study, representing 39 of the approximately 70 wild species of this genus. We obtained the full sequences of the 1530 bp matK ORFs; no variations in length due to insertions or deletions were found. The phylogenetic trees obtained from maximum parsimony (MP) and neighbour‐joining (NJ) methods were fundamentally consistent. The genus Nicotiana formed a clade in these trees. The traditional classification of this genus was mostly in agreement with the molecular phylogeny. However, all three subgenera and some sections did not form a monophyletic group. Character‐state mappings were used to infer a centre of origin, biogeographic history, and transition of chromosome number. The results support the previous hypothesis that this genus originated in South America and subsequently spread to other continents. The suggestion that the ancestral basic chromosome number is x = 12 and that polyploidy and aneuploidy have occurred independently several times during the evolution of Nicotiana species is also discussed.
Infrared spectroscopy of Si(111) surfaces after HF treatment: Hydrogen termination and surface morphology
Authors: Burrows V. A. , Chabal Y. J. , Higashi G. S. , Raghavachari K. , Christman S. B.
Published: July 2002

Polarized internal reflection spectroscopy has been used to characterize HF-treated Si(111) surfaces. The silicon-hydrogen stretching vibrations indicate that the surface is well ordered, but is microscopically rough, with coupled monohydride, dihydride, and trihydride termination.