bluuebunny/crossref_metadata_2025_split huggingface dataset:
KONSEP “KHALÎFAH FÎ AL-ARD” DALAM PERSPEKTIF ETIKA LINGKUNGAN
Authors: Atikawati Dini , Gunawan Totok , Sunarto Sunarto 
Published: August 2021

Various environmental problems occur due to human behavior. This behavior is influenced by the way a person views his environment. The perspective is influenced by the values ??believed. Inappropriate behavior and low morale in managing the environment will cause damage. For this reason, a concept of human leadership is needed for nature which can be used as a guide for environmental management. This article aims to examine the concept of khalîfah fî al-ard in environmental ethics perspective. This article is the result of an in-depth study of relevant libraries. This article argues that the concept of khalîfah fî al-ard originating from the Qur'an is very relevant to environmental ethics biosentrism and ecocentrism. The concept of khalîfah fî al-ard which is interpreted as the representative of Allah on earth should be a human starting point in managing and maintaining the environment, so that this concept is one of the strategic means of structuring and maintaining the environment. The concept of khalîfah fî al-ard can be realized into a pro-environment movement. It is very important for us as Muslims to understand the essential meaning of ourselves as khalîfah fî al-ard who cares the earth from damage.
Pengaruh Campuran dan Rasio Bahan Pembentuk Komposit terhadap Karakteristik Komposit Bioplastik
Authors: Sitepu Syah Banu Putra , Harsojuwono Bambang Admadi , Hartiati Amna 
Published: August 2021

This research aims to determine the effect of the mixture and the ratio of the composites and their interactions to the characteristics of the bioplastic composites and to determine the mix and ratio of the composites that produce the best characteristics of the bioplastic composites. The experimental design of this study used a randomized block design method. Factor I is a mixture of composite materials consisting of maizena-glucomannan, maizena-chitosan, and maizena-carrageenan. The second factor is the ratio of the composite material mixture which consists of 5 levels, namely 100: 0, 75:25, 50:50, 25:75 and 0: 100. The experiment resulted in 15 treatment combinations and were grouped into 2 groups when the process of making bioplastic composites was obtained, so that 30 experimental units were obtained. Data were analyzed for their diversity and continued with Duncan's multiple comparison test. The observed variables which tensile strength, elongation at break, modulus young, swelling, and biodegradation time. The results showed that the mixture and the ratio of the composites forming a very significant effect on tensile strength, elongation at break, elasticity, and swelling. The interaction has a very significant effect on tensile strength, elasticity and swelling and significantly affects the elongation at break of bioplastic composites. Meanwhile, the mixture and the ratio of the ingredients to form the composites had no significant effect on the biodegradation time. Maizena:glucomannan composite with ratio (25:75) produced the best characteristics of bioplastic composites with tensile strength values of 6.99 MPa, elongation at break of 16.5%, elasticity 42.39 MPa, swelling 78.78% and biodegradable time of 7 days. There are 2 variables that have met the standard, namely: elongation at break of bioplastic composites that meet the plastic Standard SNI 7188.7: 2016 and biodegradation time has met the international plastic standard ASTM 5336 and 3 variables that do not meet the standards, namely: Tensile strength (6,99 MPa) and elasticity (42,39 MPa) do not meet the Plastic Standard SNI 7188.7: 2016 and swelling (39,1%) does not meet international plastic standards (EN 317).
Keywords : bioplastic composites, maizena, glucomannan, chitosan, carrageenan
Karakteristik Komposit Bioplastik dalam Variasi Rasio Pati Gadung (Dioscorea hispida D.) - Glukomanan dan Suhu Gelatinisasinya
Authors: Pratami Ni Luh Feby Putri , Hartiati Amna , Harsojuwono Bambang Admadi 
Published: August 2021

This study aims to determine the effect of variations in the ratio of gadung starch (Dioscorea hipida D.) - glucomannan and their interaction on the characteristics of bioplastic composites and to determine the ratio of gadung starch (Dioscorea hipida D.) - glucomannan and its gelatinization temperature which gives the best characteristics of bioplastic composites. This study used a factorial randomized block design (RBD) with two factors. The first factor is the variation in the ratio of the gadung tuber starch - glucomannan which consists of 3 levels, namely (60:40), (50:50), (40:60). The second factor is the gelatinization temperature which consists of 3 levels, namely 75 ± 1oC, 80 ± 1oC 85 ± 1oC. Each treatment was grouped into 2 based on the time of the manufacturing process so that 18 experimental units were obtained. The variables observed were tensile strength, elongation at break, elasticity, and biodegradation time. The data obtained were analyzed of variant and continued with the HSD Tukey. The results showed that the ratio of gadung - glucomannan starch, gelatinization temperature, and their interactions had a very significant effect on tensile strength, elongation at break, and elasticity but it did not significantly affect the biodegradation time. The ratio of gadung tuber starch - glucomannan (60:40) with a gelatinization temperature of 85 ± 1oC produced the best bioplastic characteristics with a tensile strength value of 4.4 MPa, an elongation at break of 9.5%, and elasticity value of 22.390 MPa and resulted in a degradation time of 7 days. 2 variables meet the standards, namely: the extension when the bioplastic composites have broken up has met the SNI plastic standards and biodegradation has met the international plastic standard ASTM 5336.
Keywords: bioplastic, composite, gadung starch, gelatinization temperature, glucomannan,
Variasi Konsentrasi Glukosa pada Media Tumbuh dan Lama Fermentasi Dalam Memproduksi Etanol oleh Isolat BM1-CP14
Authors: Ajizah Nurul Lita , Wijaya I M. Mahaputra , Antara Nyoman Semadi 
Published: August 2021

This study was aimed determine the effect of glucose concentration on ethanol producing BM1-CP14 isolate media and to determine to optimum fermentation time to producing ethanol and to determine the growth phase curve of BM1-CP14 isolates. This study uses 4 glucose concentration (8, 12, 16 and 20%) and 3 fermentation time (14, 17 and 20 days). The experimental-explorative research process was carried out in several stages, namely rejuvenation of BM1-CP14 cultures, culture grow, cell isolates adjustment, glucose level on fermentation media measurement, fermentation, and distillation. The glucose concentration which are at the range of 10?18% have an optimum effect in producing ethanol The highest total ethanol was obtained from the glucose concentration of 16% with a fermentation time of 10 days having a difference in total dissolved solids of 8.30 (?% brix) resulting in the highest total ethanol of 38.75 mL. The glucose concentration of 8% resulted in a less than optimal total ethanol, which was 18.00 mL with a difference in total solids of 4.20 (?% brix), while the glucose concentration of 20% has a difference in total dissolved solids of 6.20 (?% brix) and produced a total ethanol of 26.50 mL. The Fermentation time of 14, 17, and 20 days was effected in producing ethanol, namely if the fermentation was longer, the total ethanol produces would be lower. The fermentation time of 14 days resulted in a total ethanol of 37.50 mL with a difference in total dissolved solids of 5.05 (?% brix). In longer fermentation of 17 and 20 days, the total ethanol produced was decreased, produced smaller total ethanol. The growth curve of BM1-CP14 isolates showed the growth isolates of BM1-CP14 with a growth time of 54 hours, starts from the exponential phase for 12 hours, the stationary phase for 18 hours and ends in the death phase.
Keywords: Bacteria, BM1-CP14 isolate, ethanol, fermentation time, glucose concentration
Gênero e educação: dissidências, resistências e transgressões
Authors: Nascimento e Silva Daniela Grieco , Duarte Gustavo de Oliveira 
Published: August 2021

Este artigo aborda problemáticas referentes às discussões de gênero no contexto escolar no que tange às conformações culturais que definem e legitimam papéis sociais e reforçam binarismos. A partir de uma pesquisa teórica, são tecidas algumas ponderações sobre a produção e potência da conceitualização do termo gênero e sua relação com as produções das identidades masculinas e femininas, especialmente relacionando a atuação do discurso escolar em relação a estas temáticas. Perceber e pensar sobre as relações de poder que interagem na escola é uma forma de opor-se, de gerar resistência e tecer um outro olhar, uma outra escuta, capaz de compreender e acolher as diversidades, vendo-as como uma forma de manifestação da identidade/subjetividade do sujeito.
Palavras-chave: Gênero; Contexto Escolar, Problematizações.
Hydrogeochemical Assessment of Groundwater Quality and its Suitability for Irrigation and Domestic Purposes in Rural Areas, North of Baiji City-Iraq
Authors: Abed Mahmood F. , Zarraq Ghazi , Ahmed Salwa H. 
Published: August 2021

Background: The present study was conducted to highlight the importance of environmental pollution and its negative impacts on aquatic, plants and animals lives, especially in industrial areas.
Objective: This research involved studying the hydrogeochemistry of the groundwater and assessing its quality for irrigation and domestic purposes using quality parameters. In this study, 33 groundwater samples were collected from wells during May 2013 and were analyzed for major ions and TDS.
Results: The hydrogeochemical facies of groundwater were identified using the Gibbs model and Chloro – alkaline indices. The results of the Gibbs graph suggest that groundwater chemistry is controlled by evaporation factors. It was found that the values of chloro – alkaline indices were positive, indicating ionic exchange between Na+ in groundwater with Ca2+ and Mg2+ in the aquifer material.
Conclusion: The current study of corrosivity ratio showed that groundwater wells are unsuitable for domestic uses.
Aplikasi Gold Nanopartikel dengan Bahan Alam sebagai Kosmetik Pemutih Wajah: Tinjauan Sistematis
Authors: Tiara Putri Lisnawati , Syukri Yandi , Werdyani Sista 
Published: August 2021

Penggunaan bahan alam sebagai pemutih memiliki keuntungan lebih aman meskipun penyerapan dalam kulit relatif rendah. Oleh karenanya, pengembangan nanopartikel emas (AuNPs) bahan alam dapat menjadi solusi permasalahan tersebut. Review ini bertujuan untuk mengumpulkan data terkait pengembangan bahan alam dengan nanopartikel emas yang berkhasiat sebagai agen pemutih. Identifikasi dilakukan dengan mencari literature melalui media pubmed, Science Direct, dan Google Scholar dengan menggunakan kata kunci ‘gold nanoparticle’, ’natural ingredients’, ’ cosmetics’, ‘tyrosinase inhibition’,’ melanin’ dan ’whitening’. Pencarian didasarkan pada kriteria inklusi dan eksklusi yang telah di tetapkan. Hasil evaluasi literatur menunjukkan pengembangan bahan alam sebagai pemutih kulit telah banyak dikembangkan, namun dikarenakan sifat senyawa aktif sulit terserap menyebabkan hasil yang kurang maksimal dalam menghambat aktivitas tirosinase. Sehingga dilakukan modifikasi dalam bentuk nanopartikel emas untuk mempermudah proses penyerapan. Hasil pengujian aktivitas tirosinase bahan alam dalam bentuk nanopartikel emas lebih baik jika dibandingkan dengan bahan alam dalam bentuk ekstrak. Hal ini ditunjukan dengan nilai IC50 yang semakin kecil jika dibandingkan dengan dengan bahan alam dalam bentuk ekstrak
Visual acuity through Night Vision Goggles (NVGs): A comparative assessment between Gen 2++ and Gen 3 NVGs under different illumination conditions
Authors: Sharma D , Tripathy NK , Raghunandan V , Sekhar BM 
Published: August 2021

Introduction:
During night flying operations, Night Vision Goggles (NVGs) help the aircrew to visualize by intensifying lights reflected from an object. Night sky illumination and image intensification mechanism are the two important factors that affect visual acuity (VA) through NVG. Hence, assessment of visual acuity through Gen 2++ and Gen 3 NVG under different illumination conditions and comparative analysis between the two NVGs was the desired objective of the study.

Material and Methods:
In a prospective repetitive measure design, a total of 60 volunteered subjects were examined for their VA through Gen 2++ and Gen 3 NVGs using USAF Tri-Bar Chart in the eye lane room of the NVG Lab. The VA was measured under four different illumination conditions; full moon (FM), half moon (HF)quarter moon (QM), and starlight (SL) conditions. The measured VA was converted to logMAR values and analyzed.

Results:
VA deteriorated significantly with decreasing illuminations through both Gen 2++ (χ2 = 149.9, P < 0.001) and Gen 3 NVGs (χ2 = 156.5, P < 0.001). For Gen 2++ NVG, the difference in VA was statistically significant in all conditions other than between FM and HM. Whereas, it was almost significant for all illumination conditions for Gen 3 NVG. The VA through Gen 2++ was better than Gen 3 in all conditions and the difference in VA widened with decreasing illuminations.

Conclusion:
VA declined with decreasing illuminations for Gen 2++ as well as Gen 3 NVG, even though, the difference was not significant between FM and HM for Gen 2++ NVG. VA was observed to be consistently better through Gen 2++ NVG compared to Gen 3 across all four illumination conditions. However, keeping in view the dynamic changes in night sky illuminations during flying operations, the findings of the study need to be validated in operational conditions.
Effects of simulated prolonged restrained sitting on physical and physiological states
Authors: Nepal T , Sharma V 
Published: August 2021

Introduction:
Advancement in aerospace technology, and resultant change in operational capabilities has posed unique challenges on the aircrew, who is required to operate for prolonged periods seated and restrained. Examination of the effects of prolonged restrained sitting on physical and physiological states was the desired objective of the study.

Material and Methods:
Longitudinal evaluation of subjective appreciation of physical discomfort and pain, and physiological parameters, namely, heart rate (HR), blood pressure (BP), oxygen saturation (SpO2), skin temperature, and calf girth changes across 6-h of simulated prolonged restrained sitting was undertaken among 15 healthy male non aircrew volunteers with mean age of 31.2 ± 3.63 years. Subjective discomfort was assessed by Category Partitioning Scale (CPS) and pain by Short-Form McGill Pain Questionnaire (SF-MPQ).

Results:
Prolonged restraint sitting of 6-h resulted in a significant increase in calf girth. Significant changes were also observed in CPS and SF-MPQ scores indicating an increase perception of discomfort and pain. Changes in HR, MAP, SpO2, and lower limb skin temperature were also observed even though these changes were lower in magnitude.

Conclusion:
The pain and discomfort following 6-h of prolonged restraint sitting were found to be appreciable by the subjects. This, along with a significant change in the calf circumference and other physiological parameters were possibly due to effects of venous pooling as a result of sitting for prolonged periods. The effects so observed could have potential flight safety implications and affect mission effectiveness. However, these findings need to be examined in actual cockpit conditions where the seat is more ergonomically designed; yet the aircrew is subjected to a wide spectrum of additional aeromedical stressors.
Objective assessment of nap as a method to improve cognitive performance using a bio-mathematical model
Authors: Mohapatra SS , Ghosh D , Sarkar R , Anand K 
Published: August 2021

Introduction:
Strategic naps are considered as efficacious means of maintaining performance and reducing the individual’s sleep debt. It can reduce subjective feelings of fatigue and improve performance and alertness. However, literature is scant on assessment of naps and associated cognitive performance in the Indian military aviation scenario. This study is an attempt to assess the nap duration and its objective assessment on gain in performance, if any.

Material and Methods:
In this cross-sectional observational study, sleep data were collected from 23 aviation personnel in a military flying base using actigraphy device. The actigraphic data were then fed into a software called fatigue avoidance scheduling tool. The nap duration and its effect on cognitive parameters were analyzed.

Results:
About 65.2% of the participant were found to be Day-Time Habitual Nappers. Of the 50 Naps logged by these participants, 11 (22%) naps were less than 30 min, 14 (28%) were between 30 and 60 min, 15 (30%) were between 60 and 120 min, and only 10 (20%) were above 120 min. Post-nap gain in the effectiveness and other cognitive parameters was found to be different in different cognitive domains.

Conclusion:
Naps more than 30 min had the optimal efficiency. The nap-induced gain in the task effectiveness and cognitive performance was confirmed. While the performance enhancement was significant for the naps more than 30 min, naps more than 60 min did not have any added advantages.
Lumbosacral transitional vertebra in military aviation candidates: A cross-sectional study
Authors: Vaidya R , Bhatia M 
Published: August 2021

Introduction:
Lumbosacral transitional vertebra (LSTV) is a common anomaly of the lumbosacral junction with a prevalence of 4–35.9% in various studies. Plain radiography of the spine in anteroposterior and lateral projections is done for the evaluation of the spine in candidates coming for medical evaluation for flying duties in the armed forces.

Material and Methods:
An observational study was conducted on the whole spine series of radiographs done at a medical selection establishment. The study population included candidates reporting to the establishment for medical examination to ascertain fitness for flying duties. In a small subset of this study population having LSTV, the Ferguson’s view was done to better delineate the lumbosacral junction.

Results:
The analysis revealed a total 148 cases of LSTV with a prevalence of 13.9%. Ferguson’s view, undertaken among 30 doubtful cases, confirmed the presence of LSTV in 27 cases. Type IIa was observed to be the most common pattern of LSTV followed by Type IIIb. As per the existing policy, 63.8% of candidates with LSTV were considered unfit for flying duties.

Conclusion:
Flying duties in the armed forces require the highest standard of physical fitness. LSTV is a very common finding during the evaluation of candidates and it is appropriate that the cases of LSTV be evaluated thoroughly. In doubtful cases of LSTV, the Ferguson’s view is a useful supplementary view as it clearly delineates the lumbosacral junction.
Aeromedical evacuation of a COVID-19 patient from a zonal hospital: A case report
Authors: Patnaik S , Dash LK , Rajaram G , Chattophadhayay C 
Published: August 2021

Introduction:
The coronavirus disease 2019 (COVID-19) pandemic has affected the whole world including many healthcare workers. In this era of ongoing global pandemic, the patient surge for aeromedical evacuation is going to increase.

Case Details:
A 54-year, male healthcare worker with no known co-morbidities, presented with complains of fever, myalgia, and sore throat at a zonal hospital of Indian Air Force in the northeast part of India. He was diagnosed with COVID-19 related bilateral extensive pneumonia. Despite of standard treatment, his condition deteriorated. An aeromedical evacuation of the patient was carried out to a tertiary healthcare centre at Delhi which involved 4-h of flying time. The Airborne Rescue Pod for Isolated Transportation (ARPIT) isolation pod was used to minimize the risk of contamination.

Discussion:
This was the first time that a COVID-19 patient was air evacuated in an isolation pod in Indian Armed Forces to the best of our knowledge. Based on our experience, we recommend that air evacuation of such a patient may be resorted to only as a life saving measure. The use of an isolation pod remains an unsettled issue; whereas, it gives absolute containment to spread of infection, it poses unique challenges in terms of handling the patient in case of an in-flight emergency. Certain modifications in the isolation pod have been recommended.
Diurnal variation in aviation significant gravity-dependent and gravity-independent anthropometric parameters
Authors: Kumari Pooja , Raghunandan V , Biswal P 
Published: August 2021

Introduction:
Anthropometric parameters need to be accurately measured because of their direct implications in selection of aircrew, aircrew-cockpit compatibility, and cockpit workspace design. Some of these parameters have significant diurnal variation, hence, measurement of these parameters in particular time of day becomes important. Quantification of these diurnal variations among some of the aviation significant parameters was the desired objective of the study.

Material and Methods:
In a prospective repeated measure design, anthropometric parameters of a total of 35 volunteers were measured in the standard defined protocol from 0800h to 1600h, at an interval of every 2h, using Institute of Aerospace Medicine (IAM) Anthropometry Platform. The data were analyzed to observe and quantify changes in diurnal variations in both gravity-dependent and gravity-independent parameters. A maximum value of 0.4 cm was taken as intraobserver variations based on the results of a pilot study.

Results:
There was a statistically significant decrement in the values of gravity-dependent anthropometric parameters from morning to evening; the difference being more after 1200h. Most of the gravity-independent parameters did not show any significant changes from 0800h to 1600h, except leg length, which showed a decrement overtime, the difference being statistically significant after 1200h.

Conclusion:
The study revealed a statistically significant variation of gravity-dependent anthropometric parameters from the baseline which could be because of the effect of erect posture on the intervertebral disc height and axial compressive loads on the spine. This became practically significant after 1200h. However, most of the gravity-independent parameters did not show any significant variations. Based on the results of this study, anthropometric measurements should be done in the morning hours preferably before 1200h.