bluuebunny/crossref_metadata_2025_split huggingface dataset:
Biosurfactants as determinants of the quality anti-aging products
Authors: Kwaśniewska Dobrawa 
Published: February 2024

Abstract
Analysing the possibilities of obtaining biosurfactants and using waste materials as substrates for their production allows us to emphasize that biosurfactants are in line with the ideas of sustainable development and the protection of non-renewable resources. These ideas also apply to the engineering and technology of cosmetic products. For this reason, and because of the multi-functionality of biosurfactants, their role and widespread use in cosmetic formulations is likely to increase. Biosurfactants tend to have good surface properties. Their structural diversity results in differences in biological, antioxidant or biocidal activity. The paper presents the potential of biosurfactants that could be used in the composition of products dedicated to the fight against the problems of ageing skin. Particularly important in the skin ageing process is the fight against radicals and the prevention of collagen loss in the skin. The overall appearance of the skin also depends on the level of hydration and roughness. Biosurfactants also have an effect on the melanogenesis process, controlling hyperpigmentation. A relatively new approach to the fight against skin ageing emphasizes the role of the microbiome, and available research also points to the correlation of biosurfactants with maintaining the correct structure of the microbiome.
Synthesis and structure of a manganese(II) coordination polymer assembled with 5-(tert-butyl)isophthalic acid and 1,3-dimethyl-2-imidazolidinone
Authors: Chang Xin-hong 
Published: February 2024

Abstract
A manganese(II) coordination polymer [Mn(tbip)(DMI)]
n
(1), (tbipH2 = 5-(tert-butyl)isophthalic acid, DMI = 1,3-dimethyl-2-imidazolidinone), has been synthesized under “urea-thermal conditions” (i.e. in an excess of urea). Its structure has been determined by single-crystal X-ray diffraction analysis and further characterized by elemental analysis and IR spectra. Complex 1 crystallizes in the monoclinic space group P21/c with Z = 4. In 1, the [tbip]2− ligand bridges the Mn(II) cations to form infinite chains, and the neighbouring chains are connected through [tbip]2− ligands into layers.
The Training and Tapering Practices of Highland Games Heavy Event Athletes
Authors: Winwood Paul W. , Keogh Justin W.L. , Travis S. Kyle , Grieve Ian , Pritchard Hayden J. 
Published: February 2024

Abstract
Winwood, PW, Keogh, JW, Travis, SK, Grieve, I, and Pritchard, HJ. The training and tapering practices of Highland Games heavy event athletes. J Strength Cond Res 38(3): e116–e124, 2024—This study provides the first empirical evidence of how Highland Games heavy event athletes train and taper for Highland Games competitions. Athletes (n = 169) (mean ± SD: age 40.8 ± 10.7 years, height 181.2 ± 9.5 cm, weight 107.2 ± 23.0 kg, 18.8 ± 10.3 years of general resistance training, and 8.1 ± 6.9 years of competitive Highland Games experience) completed a self-reported 4-page online survey on training and tapering practices. Analysis by sex (male and female) and competitive standard (local or regional, national, and international) was conducted. Seventy-eight percent (n = 132) of athletes reported that they used a taper. Athletes stated that their taper length was 5.2 ± 3.5 days, with the step (36%) and linear tapers (33%) being the most performed. Athletes reported that their highest training volume and intensity were 5.5 and 3.8 weeks out (respectively) from competition, and all training ceased 2.4 ± 1.4 days before competition. Training volume decreased during the taper by 34%. Athletes typically stated that, tapering was performed to achieve recovery, peak performance, and injury prevention; training intensity, frequency, and duration stayed the same or decreased; game-specific training increased with reductions in traditional exercises; the caber toss, weight for height, and heavy weight throw were performed further out from competition than other events; muscular power and strength were the most common types of training performed; static stretching, foam rolling, and massage were strategies used in the taper; and poor tapering occurred because of life/work circumstances, lack of sleep/rest, or training too heavy/hard. These results may aid Highland Games athletes to optimize training and tapering variables leading to improved performances.
Design And Simulation of a Hexagonal High-Gain MIMO Patch Antenna For 5G Applications
Authors: Borel Touko Tcheutou Stephane , Priyadarshini Rashmi 
Published: February 2024

View of the technological evolution and the problems encountered by the world, researchers are obliged to find solutions, particularly researchers in the field of antennas. This article has been devoted to the design and study of a hexagonal dual-band MIMO patch antenna for Satellite and 5G applications. Several parameters have been studied, we can quote among other things the gain, the bandwidth, the radiation diagram, the directivity, and the distribution of the electric field E. To achieve these studies and find optimal solutions, several designs have been made like the design of a simple hexagonal patch antenna, and, in the end, the proposed antenna is a MIMO with a hexagonal shape and 2 feeding ports. The proposed antenna operates at 25 GHz as the central frequency. The obtained ECC (envelope correlation coefficient) value is less than 0.006 for the entire operating bandwidth, which satisfies the standard value criteria of less than 0.5 and indicates minimal isolation between the antenna arrays. The values of the gain and the maximum directivity of the antenna obtained are respectively 8.12 dB and 8.37 dB, which gives us an efficiency of the antenna at 97.01% with high isolation > 25 dB. The results are found to be sufficient for the device to be used for mm-wave 5G MIMO applications. Additional MIMO performance metrics, such as the channel capacity loss (CCL), diversity gain (DG), and total active reflection coefficient (TARC), are evaluated. All this work has been done using HFSS 15 as software.
A 3D Spherical ETAS Model: A Case Study in the Alaska-Aleutian Region
Authors: Li Yongbo , Zhuang Jiancang , Chen Shi , Guo Yicun , Xiong Ziyao 
Published: February 2024

Abstract
This study proposes a hypocentral version of the spherical epidemic-type aftershock sequence (ETAS) model by incorporating hypocentral depth information into the spherical ETAS model and applies it to earthquake data from the Alaska-Aleutian area. We validate the model using the stochastic reconstruction techniques and illustrate the rationale behind selecting the spatial probability density function. Subsequently, we estimate the 3D spatial variations of the background and offspring seismicity in the study region, revealing that the majority of clusters are located in shallow regions. We also identify an apparent temporal change in the background seismicity caused by artificial effects. Compared with the 3D-ETAS and spherical version of the epidemic-type aftershock sequence (SETAS) models, the new 3D-SETAS model provides a better description of 3D seismicity in high-latitude regions globally.
Minimally invasive surgery in women with endometrial cancer on haemodialysis: a tertiary centre experience
Authors: Tan Y. H. , Siew Shayna J. Y. , Yap Jeannie J. Y. , Ravichandran N. 
Published: February 2024

The aim of the case series was to determine if minimally invasive approach to cancer staging is safe and feasible for patients on haemodialysis. We looked at patients on haemodialysis with endometrial cancer who underwent minimally invasive hysterectomy bilateral salpingo-oophorectomy with pelvic lymph node dissection performed by the Gynaecological Oncology unit at Singapore General Hospital from 2016 to 2020. Their demographics, operative details, oncological outcomes, and any post-operative complications were recorded. A total of 16 haemodialysis patients undergoing either laparoscopic or robotic endometrial cancer staging were selected. In our case series, mean duration of surgery was 173 minutes. Mean post-operative high dependency unit stay was 1 day with mean total length of hospitalisation of 5 days. All patients were ambulant at 24 hours post-surgery with pain scores peaking at 2 out of 10 at 6 hours post-surgery, and declining to 0 at 12 hours post-surgery. None of the patients experienced post-operative fluid dysfunction, electrolyte imbalance, sepsis, venous thromboembolism, cardiovascular or wound related complications. We conclude that minimally invasive surgical techniques is a safe and viable approach to endometrial cancer staging for patients on haemodialysis. Further refinement and streamlining of various strategies in the pre-, intra-, and post-operative period can further improve patient outcomes and quality of care.
Batasan HAM Perspektif Uṣūl Al-Fiqh: Telaah Childfree dan LGBT
Authors: Fathoni Muhammad Zakki 
Published: February 2024

Artikel ini bertujuan untuk mengkaji batasan HAM, semakin kuatnya isu-isu HAM, HAM kini dijadikan sebagai topeng bagi seseorang menyuarakan keinginannya atas alasan kebebasan hak asasinya, seperti halnya kebebasan untuk melakukan childfree, lebih parah lagi seseorang yang ingin menyuarakan hak untuk memilih hidup sebagai LGBT atas nama kebebasan hak, maupun hak untuk diakui bahwa perilaku LGBT itu tidak menyimpang dan merupakan hak seseorang untuk memilih jalan tersebut tanpa adanya diskriminasi.
Indonesia yang berasaskan Pancasila dalam sila pertamanya “Berketuhanan Yang Maha Esa”, maka Fenomena Childfree maupun LGBT apakah seseuai dengan sila pertama tersebut, melihat Indonesia sangat menjunjung tinggi nilai moralitas. Sehingga penulisan ini bertujuan untuk mengetahui batasan HAM perspektif uṣūl al-fiqh: telaah childfree dan LGBT.
Penulisan ini menggunakan metode studi pustaka (library research) dengan cara mengumpulkan data-data kualitatif yang diperoleh dengan mengumpulkan sumber-sumber data yang relevan dengan batasan HAM perspektif uṣūl al-fiqh: telaah childfree dan LGBT. Selain data diatas, penulis juga menggunakan data-data yang bersumber dari media sosial berupa podcast wawancara dari narasumber langsung di tayangan media sosial.
ESTUDO EPIDEMIOLÓGICO DA HÉRNIA INGUINAL NO ESTADO DO TOCANTINS: ANÁLISE DE 2018 A 2022.
Authors: Ferreira de Abreu Alice , Lemos Rodrigues Daniel , Rocha Gonçalves João Pedro , Campos Munaretto Eduardo Felipe , Rocha Ferreira João Vitor , Nader Ferreira Pedro Eduardo 
Published: February 2024

Introdução: A hérnia inguinal, marcada pela protrusão de órgãos na região inguinal, é delimitada pelo triângulo de Hessebalch e classificada em Hérnias Inguinais Indiretas (HII) e Diretas (HID). Com aproximadamente 20 milhões de procedimentos de reparo realizados anualmente em todo o mundo, destaca-se a importância de compreender fatores etiológicos e implementar diretrizes eficazes de manejo. Objetivo: Esta análise epidemiológica foi conduzida com o objetivo de examinar e compreender as características específicas da incidência da hérnia inguinal no Estado do Tocantins no período compreendido entre 2018 e 2022. Metodologia: Esta pesquisa adota uma abordagem epidemiológica, utilizando dados do DATASUS para analisar casos de internações e óbitos por hérnia inguinal no Tocantins entre 2018 e 2022, comparando com a média nacional. Resultados: Entre 2018 e 2022, o Tocantins registrou 4.778 hospitalizações por hérnia inguinal, com pico em 2022 (1.589 casos). Palmas liderou com 1.028 casos, seguida por Araguaína (784). Homens representaram a maioria dos casos (4.086), destacando uma tendência de maior incidência no sexo masculino. A faixa etária de 50 a 59 anos teve mais casos (792), enquanto crianças até 9 anos também apresentaram elevada incidência. A mortalidade foi baixa (7 óbitos), com uma média de 0,15 ao longo do período. O custo total do tratamento no estado foi de R$ 2.986.370,72, com destaque para 2022 (R$ 964.039,62). Conclusão: A hérnia inguinal é uma condição de significativa prevalência no Tocantins, afetando predominantemente homens e acarretando despesas consideráveis para o orçamento da saúde pública.
Palavras-chave: Hérnia Inguinal; Hérnia Inguinal Direta; Epidemiologia.
Peramalan Jumlah Produksi Buah Nanas di Provinsi Riau Menggunakan Metode Single Exponential Smoothing
Authors: Sarah Dwi Az-Zahra  , Depriwana Rahmi  
Published: February 2024

Forecasting is an attempt to project future events using relevant information from the past. Using such data, forecasting serves as an effective means of planning activities and reducing the likelihood of errors in predicting the course of future events. One method of prediction is the Single Exponential Smoothing method. The research is aimed at predicting the amount of pineapple production in Riau Province by 2023. The study utilizes information on the number of pines production in the Riau province as many as 10 datasets covering the period from 2013 to 2022. This data is obtained from the official website of BPS Province Riau. In this study, the researchers used quantitative methods. Based on a solver analysis in Ms.Excel, the results showed that the forecast accuracy rate reached 71.64% with the smallest error presentation of about 28.36% which categorized these forecasts quite well. Using this method, the forecast quantity of pineapple production in Riau Province for 2023 is 262,637 tons.
Principal Supervision Strategies in Improving Teacher Professionalism
Authors: Ikhwan Muh. Saidil , Rabbani Syarifah Aulia 
Published: February 2024

Teachers in providing knowledge to students must perform professionally. One way to increase teacher professionalism is to carry out teacher supervision. School principals must have special supervision strategies to increase teacher professionalism. The aim of this research is to determine the principal's supervision strategy in increasing teacher professionalism at MTs NW Dames. This research uses a descriptive qualitative approach that focuses on teacher professionalism. The subjects of this research include school principals, teachers and education staff at MTs NW Dames. The results of this research show that there are three supervision strategies carried out by school principals, namely 1) supervision strategy using coaching activities, 2) supervision strategy using mentoring activities, and 3) supervision strategy using workshop activities.
Highlights:

Coaching activities: Principals engage in hands-on guidance to improve teacher performance and professionalism, providing direct feedback and support.
Mentoring activities: Principals foster long-term growth by offering personalized guidance and advice, building trust and rapport with teachers.
Workshop activities: Principals facilitate collaborative learning environments through workshops, promoting skill development and sharing best practices among educators.

Keywords: Supervision Strategy, Headmaster, Teacher Professionalism.
THE IMPACT OF TOURISM ON DEVELOPMENT MICRO, SMALL, MEDIUM ENTERPRISES (MSMEs) AT SEMBILAN SUMENEP BEACH
Authors: Hanifah Luluk , Ardyansyah Farid 
Published: February 2024

This research based by developing tourism on Sembilan Sumenep beach tourist destination areas. The tourism was developing continuously to increase visitors in tourist attractions on Sembilan Sumenep beach. On the processes of developing tourism will give impact to many people for participate to provide tourism industry, that’s with micro, small, medium enterprises (MSMEs). Developing of tourism give motivation for many people to build Micro, Small, and Medium Enterprise, this is based on tourism opportunities. The purpose of this study was to knowing how impact of developing tourism to small and medium enterprise and to analysis how the processes of development tourism give impact for micro, small and medium enterprise from income sector and business growth. Analysis of the data used in this research is descriptive analysis method. Based on the results of descriptive and analysis, so obtained the conclusion that’s developing tourism in Sembilan Sumenep beach tourist destination areas could increase of micro, small, and medium enterprise income in tourist destination areas Sembilan Sumenep beach, and was creating opportunities for many people to make new business with thought that’s development of tourism will bring in many tourist and a lot of money was shopping in tourist destination areas. This is prove that’s tourism could increase people opportunities for the business and growth the business. Advice can be given is still need improvement on developing tourism which has been done in tourist destination areas Sembilan Sumenep beach to accommodation tourist needs so many tourist who visiting and improving economy level of people. And needs help from the government to give education for businessmen to developing their product and market their product extensively.Keywords: Tourism, Micro Small Medium Enterprises (MSMEs), Sembilan Beach
Improving Hole Cleaning by Using Distributed Damping Subs to Control Lateral Oscillations of the Drill-String
Authors: Mihai R. , Ambrus A. , Cayeux E. 
Published: February 2024

Abstract
Poor hole cleaning is often the cause for drilling performance deterioration, many times leading to detrimental situations such as pack-offs and stuck pipe.
In addition to high flowrate and rotational speed, lateral oscillations of the drill-string on the low-side of inclined wells were shown to improve hole cleaning. However, the drill-string lateral oscillations are usually not controlled in any way. This paper proposes a solution to trigger the lateral movement of the drill-string at certain positions, with simulation results to support the novel concept.
Generally, it is desirable to damp out drill-string vibrations as they impact drilling performance, can cause severe damage to drill-string/bottom hole assembly components, or destabilize the formation rocks. A solution based on distributed damping subs along the drill-string has been proposed to eliminate stick-slip and other forms of torsional vibrations. These damping subs utilize magnetic viscous damping through eddy current braking and their design enables active control of the damping strength. The latter fact allows to consider a coordinated control of the damping strength to initiate a controlled low amplitude lateral movement of the drill-string that can facilitate hole-cleaning while simultaneously attenuating torsional oscillations of the drill-string.
A simulated environment was used for verifying the proposed solution. It includes a transient stiff-string torque and drag model which accounts for axial, torsional and lateral displacements. The viscous damping subs are included in the model at defined locations along the drill-string. Several distributed control strategies have been simulated and the induced lateral movement of the drill-string has been analyzed. Simulations were performed with a well configuration from a field case. The first series of simulated experiments were focused on controlling the amount of viscous damping for all subs simultaneously with the same magnitude. It was observed that the effect on the lateral movement in this case was minor. In a second approach, subs placed at different locations had different damping strengths that were varied at specific time steps. Controlling the damping in a distributed fashion had a stronger effect on the local lateral movement and it was possible to create different localized movement patterns along the drill-string.
The concept of utilizing distributed damping subs along the drill-string opens the possibility to actively control the local lateral movement of the drill-pipes and therefore enhance hole cleaning performance. At the same time, torsional oscillations are damped out. Furthermore, the damping subs reduce the overall required torque at the top-drive and facilitate weight transmission to the bit.
A New While Drilling High Resolution Caliper and Oil Base Mud Electrical Imager Using Advanced Radar Technology
Authors: Øy L. , Bye I. , Barrouillet B. , Lauritzen M. , Chemali R. E. 
Published: February 2024

Abstract
A new LWD sensor is introduced for measuring a high-resolution borehole image in large boreholes and both in light and heavy oil base mud. The new sensor uses advanced radar technology, and in addition to caliper (time-of-flight) image, delivers an electrical image to help geoscientists visualize and understand the stratigraphy and fractures.
A pulse radar operating in the multi-gigahertz range is implemented within the bottom hole assembly. As the BHA rotates, the radar measurements scan the borehole surface. The time of flight is converted to a distance to the borehole wall. The amplitude of the reflected signal correlates with the micro-resistivity/permittivity of the formation in the immediate vicinity of the borehole.
Up until recently, sensors capable of performing these caliper measurements while drilling have been limited to smaller size boreholes and lighter muds. A new technology, based on a downhole radar rotating with the bottom hole assembly extends the application to boreholes of 18 inches and more in oil base mud. The same technology yields a micro-resistivity/permittivity image that is prized by the geoscientists for recognizing key geological features, including layered formations, fractures, faults, and unconformities. Here again the new technology is the first to our knowledge to obtain such information while drilling in large holes and light and heavy oil base mud.
A new technology, namely the downhole pulsed GHz radar brings a new solution to well-known problems. High resolution calipers and micro-resistivity images while drilling have been made available to the industry in recent years, however they are restricted to smaller than 12 ¼" boreholes and water base mud. The article below explains how and how well the new technology has significantly increased the range of applicability to oil base mud for large hole sizes, like 12 ¼" and 17-1/2".