bluuebunny/crossref_metadata_2025_split huggingface dataset:
Logam Berat pada Beberapa Jenis Ikan di Sekitar Perairan Tanjung Api-Api Sumatera Selatan
Authors: Eka Putri Wike Ayu , Agustriani Fitri , Fauziyah Fauziyah , Purwiyanto Anna Ida Sunaryo , Angraini Novi , Ardila Dika 
Published: May 2022

Perairan Tanjung Api-Api merupakan kawasan yang banyak digunakan dalam aktivitas perikanan di wilayah Kabupaten Banyuasin, Sumatera Selatan. Selan itu Perairan Tanjung Api-Api juga dimanfaatkan sebagai areal pemukiman, transportasi dan direncanakan sebagai area pelabuhan kedepannya. Kondisi ini tentu dapat berpotensi meningkatkan masukan bahan pencemar seperti logam berat ke perairan tersebut. Tujuan penelitian adalah untuk menentukan konsentrasi logam Pb dan Cu serta menganalisis kelayakan pangan pada daging ikan yang tertangkap di perairan Tanjung Api-Api Sumatera Selatan. Terdapat 3 jenis ikan yang dominan tertangkap yaitu ikan senangin (Eleutheronema tetradactylum), puput (Ilisha elongata) dan bawal putih (Pampus argenteus). Ketiga ikan tersebut diambil bagian dagingnya dan dianalisis kandungan logam berat Pb dan Cu mengacu pada SNI 2354.5 : 2011. Hasil penelitian menunjukkan konsentrasi Pb pada ketiga jenis ikan berkisar antara 0,89-5,89 mg/kg (rata-rata 2,28-3,28 mg/kg) dan konsentrasi Cu berkisar antara 0,06 – 1,28 mg/kg (rata-rata 0,20 – 0,78 mg/kg). Berdasarkan baku mutu BPOM, SNI 7387:2009 dan FAO (1983) akumulasi Pb telah melebihi batas yang diperkenankan. Sedangkan akumulasi Cu berdasarkan baku mutu P FAO (1983) dan Soegianto (2008) masih dibawah batas yang diperkenankan. Tanjung Api-Api waters is an area that widely used as a fishery activity in the Banyuasin Regency, South Sumatera. Tanjung Api-Api waters are also used as residential area, transportation and as a port area. This condition can increase the input of pollutants such as heavy metals. The purpose of this study was to determine the Pb and Cu metal concentrations in fish from Tanjung Api-Api waters, South Sumatera. There are 3 types of fish that are predominantly caught, Eleutheronema tetradactylum, Ilisha elongata and Pampus argenteus. The three fish were taken part of the meat and analyzed the content of heavy metals Pb and Cu referring to SNI 2354.5: 2011. This reseach show that Pb concentrations in all types fish ranged from 0.89 to 5.89 mg/kg (average 2.28-3.28 mg/kg) and Cu concentrations ranged from 0.06 - 1.28 mg/kg (average 0.20 - 0.78 mg/kg). Based on National Food and Drug Agency, SNI 7387: 2009 and FAO (1983) the accumulation of Pb were exceeded specified quality standards. Whereas Cu accumulation based on FAO (1983) and Soegianto (2008) are still below the allowed limits.
Sebaran Ikan Sidat (Ikan Katadromus) di Perairan Sungai Lorok Ngadirojo, Kabupaten Pacitan, Jawa Timur
Authors: Romadhi Muhammad Arif , Indarjo Agus , Suryono Chrisna Adhi 
Published: May 2022

Ikan sidat Anguilla sp. merupakan kategori ikan yang bermigrasi secara katadromous, artinya ikan sidat mengawali hidup di laut yang bermigrasi ke perairan tawar untuk tumbuh menjadi sidat dewasa dan kembali ke laut untuk melakukan pemijahan (spawning migration). Penelitian ini bertujuan untuk melakukan klasifikasi jenis dan ukuran panjang kelompok sebaran ikan Sidat di Perairan Ngadirojo, Kabupaten Pacitan. Penentuan kelompok menggunakan metode morfometrik dan jenis sampel menggunakan A/D%. Hasil menunjukkan distribusi ikan sidat yang ditemukan di Muara Sungai Lorok terdapat dua spesies, yaitu Anguilla bicolor dan Anguilla marmorata. Frekuensi ukuran panjang distribusi benih ikan sidat (glass eel) kisaran ukuran panjang total 4,8 cm hingga 7,56 cm dengan rata – rata 6,0 ± 0,9 hingga dan Sedangkan ukuran panjang distribusi sidat muda (yellow eel) kisaran ukuran panjang 37,98 cm hingga 48,0 cm dengan rata – rata 43,2 ± 3,1. Analisis uji beda mendapatkan nilai signifikansi (p= 0,00 < 0,01) maka adanya perbedaan ukuran panjang antara stasiun di aliran SungaI Lorok. Freswater eels Anguilla sp. is a category of fish that cathadromous migrate, that eel fish begin to live in the sea that migrates to fresh waters to grow into adult eels and returns to the sea to spawning migration. This study aims to classify the type and size of the length of the Eel fish distribution group in Ngadirojo Waters, Pacitan Regency. This study aims to classify the type and size of the length of the Eel fish distribution group in Ngadirojo Waters, Pacitan Regency. Group determination using morphometric methods and sample types using A/D%. The results showed that the distribution of eel fish found in the Lorok River was two species, namely Anguilla bicolor and Anguilla marmorata. The frequency of the length distribution of glass eel seeds (glass eel) ranges in total length from 4.8 cm to 7.56 cm with an average of 6.0 ± 0.9 to and. 37.98 cm to 48.0 cm with an average of 43.2 ± 3.1. The analysis of the difference test got a significance value of (p= 0,00 < 0,01), so there is a difference in length between stations in the Lorok River flow.
Kandungan Lutein Mikroalga Chlorella vulgaris dengan Salinitas Berbeda pada Media Kultur
Authors: Lasmarito Theresia Claudia , Widianingsih Widianingsih , Endrawati Hadi 
Published: May 2022

Chlorella vulgaris merupakan mikroalga yang tergolong dalam alga hijau (chlorophyta). C. vulgaris mengandung pigmen karotenoid yang hampir sebagian besar terdiri dari lutein. Hal ini membuat C. vulgaris memiliki keunggulan dibandingkan dengan jenis mikroalga lain. Lutein memiliki manfaat sebagai antioksidan untuk melawan radikal bebas pada mata. Salah satu parameter lingkungan yang mempengaruhi jumlah kandungan lutein adalah salinitas. Penelitian ini bertujuan untuk mengetahui salinitas terbaik guna mengoptimalkan pertumbuhan dan produksi pigmen lutein pada C. vulgaris. Metode yang digunakan adalah eksperimen laboratorium dengan menggunakan Rancangan Acak Lengkap. Mikroalga C. vulgaris di kultivasi dengan tiga taraf perlakuan salinitas yang berbeda yaitu 20, 25, 35 dan 30 ppt (kontrol) dengan tiga ulangan. Pertumbuhan C. vulgaris diamati selama 8 x 24 jam kemudian dipanen untuk perhitungan biomassanya. Biomassa basah hasil kultivasi diekstraksi menggunakan pelarut aseton PA. Ekstrak aseton C. vulgaris kemudian dianalisis kandungan pigmen luteinnya secara spektrofotometri. Kandungan pigmen lutein C. vulgaris tertinggi diproduksi pada salinitas 35 ppt yakni 0.011363 µg/g. Berdasarkan hasil penelitian dapat disimpulkan bahwa perlakuan salinitas berpengaruh secara signifikan terhadap kandungan pigmen lutein C. vulgaris. Chlorella vulgaris is a microalga belonging to the green algae (chlorophyta). C. vulgaris contains carotenoid pigments which consist mostly of lutein. This makes C. vulgaris has advantages compared to other types of microalgae. Lutein has benefits as an antioxidant to fight free radicals in the eyes. One of the environmental parameters that affect the amount of lutein content is salinity. This study aims to determine the best salinity to optimize the growth and production of lutein pigment in C. vulgaris. The method used is a laboratory experiment using a completely randomized design. Microalgae C. vulgaris was cultivated with three different levels of salinity treatment, namely 20, 25, 35 and 30 ppt (control) with three replications. The growth of C. vulgaris was observed for 8 x 24 hours and then harvested for the calculation of its biomass. The wet biomass from the cultivation was extracted using acetone PA as a solvent. The acetone extract of C. vulgaris was then analyzed for its lutein pigment content by spectrophotometry. The highest content of lutein pigment C. vulgaris was produced at a salinity of 35 ppt, namely 0.011363 g/g. Based on the results of the study, it can be concluded that the salinity treatment had a significant effect on the lutein pigment content of C. vulgaris.
Kandungan Logam Berat di Tambak Gracilaria verrucosa Desa Lontar Kabupaten Serang
Authors: Sasongko Agung Setyo , Rudi Mad , Surya Andrian Tri Jaka , Aziz Raden Moch Thoriq , Pambudi Rikza Agung 
Published: May 2022

Desa Lontar terletak di Kecamatan Tirtayasa, Banten. Perairan Pesisir Desa Lontar hidup berbagai biota seperti ikan, kerang dan biota lainnya. Perairan desa Lontar juga memiliki tambak budidaya rumput laut yang cukup luas. Tambak budidaya rumput laut tersebut berada cukup dekat dengan pemukiman masyarakat sekitar. Seiring pesatnya pembangunan yang terjadi di desa lontar memberikan dampak positif dan dampak negatif bagi makhluk hidup dan lingkungan di sekitar. Penelitian ini bertujuan untuk menganalisa kondisi kandungan logam berat di tambak rumput laut Desa Lontar. Metode yang digunakan adalah dengan mengambil sampel dilaksanakan di tiga titik stasiun menggunakan botol sampel, dengan pengambilan sampel sebanyak satu botol di setiap stasiunnya dan analisis logam berat di Dinas Lingkungan Hidup dan Kehutanan Unit Pelaksanaan Teknis Labolatorium Lingkungan hidup sesuai aturan baku mutu yang ditetapkan dalam Peraturan Pemerintah Republik Indonesia Nomor 22 Tahun 2021 Tentang Penyelenggaraan Perlindungan dan Pengelolaan Lingkungan Hidup. Hasilnya menunjukan bahwa Perairan di Tambak Rumput Laut Desa Lontar mengandung beberapa logam berat di atas ambang batas baku mutu untuk besi (Fe), Mangan (Mn), dan Tembaga (Cu). Rumput laut Gracilaria verrucosa mampu menyerap kandungan logam berat dalam skala rendah. Kandungan logam berat tinggi dalam wilayah tambak akan berdampak kepada pertumbuhan rumput laut tersebut. Lontar Village is located in Tirtayasa District, Banten. The coastal waters of Lontar Village live various biota such as fish, shellfish and other biota. The waters of the lontar village also have a fairly extensive seaweed cultivation pond. The seaweed cultivation pond is located quite close to the surrounding community settlements. Along with the rapid development that occurred in the village of lontar, it has a positive and negative impact on living things and the environment around them. This study aims to analyze the condition of heavy metal content in seaweed ponds in Lontar Village. The method used is to take samples carried out at three stations using sample bottles, with one bottle sampling at each station and heavy metal analysis carried out in the at the Environment and Forestry Service Environmental Laboratory Technical Implementation Unit according to standard rules. quality as stipulated in Government Regulation of the Republic of Indonesia Number 22 of 2021 concerning the Implementation of Environmental Protection and Management. The results show that the waters in the Lontar Village Seaweed Pond contain several heavy metals above the quality standard thresholds for iron (Fe), Manganese (Mn), and Copper (Cu). Seaweed can absorb heavy metal content but on a low scale, if it absorbs too much heavy metal it will have an impact on the growth of the seaweed.
Perinatal presepsin assessment: a new sepsis diagnostic tool?
Authors: Botondi Valentina , D’Adamo Ebe , Plebani Mario , Trubiani Oriana , Perrotta Marika , Di Ricco Laura , Spagnuolo Cynzia , De Sanctis Sara , Barbante Elisabetta , Strozzi Maria Chiara , Maconi Antonio , Gazzolo Francesca , Betti Marta , Roveta Annalisa , Levantini Gabriella , Gazzolo Diego 
Published: May 2022

Abstract
Perinatal sepsis constitutes a medical emergency and is still one of the major causes of mortality and morbidity. The possibility of an early diagnosis of sepsis is still debated and controversial. In particular, clinical symptoms can be hidden by the association of sepsis with other perinatal diseases and/or by therapeutic strategies performed. In this context, there is evidence that the accuracy of standard of care diagnostic parameters (i.e. blood culture, C-reactive protein, procalcitonin) can be biased by additional confounding factors (gestational age, birth-weight, acute-chronic hypoxia). Therefore, the inclusion in clinical daily practice of new biomarkers of sepsis is of utmost importance. Of a panel of biomarkers, Presepsin (P-SEP) plays an important role in the development and response of the immune system and as an early marker of sepsis both in adult and pediatric patients. Therefore, in the present review we aim to offer an overview of the role of P-SEP in the early detection of perinatal sepsis as a trustworthy marker according to actual statements of official international institutions. Future perspectives regard the possibility of a longitudinal non-invasive biological fluids P-SEP assessment thus limiting the sample stress in high risk newborns.
The crystal structure of 4,4′-bipyridinium bis-(2-hydroxy-3-methoxybenzoate), 2(C8H7.68O4)·C10H8.64N2
Authors: Angevine Devin J. , Benedict Jason B. 
Published: May 2022

Abstract
C26H24N2O8, monoclinic, P21/c (no. 14), a = 6.9170(9) Å, b = 26.012(3) Å, c = 12.7449(17) Å, β = 91.896(4)°, V = 2291.9(5) Å3, Z = 4, R
gt(F) = 0.0471, wR
ref(F
2) = 0.1320, T = 90 K.
Etching of Manganese Aluminum Bronze by Ultrasound in Seawater
Authors: Biezma M. V. , Gómez de la Rasilla O. , Haubner R. , Linhardt P. 
Published: May 2022

Abstract
Manganese Aluminum Bronze (MAB), UNS designation C95700, is an alloy widely used for large marine propellers and other components in hydropower units. MAB has a complex microstructure due to precipitation of intermetallic phases as consequence of the cast process or thermal treatments. When investigating the marine corrosion behavior of MAB alloys, it was found that a metallographic etching attack occurred under the effect of ultrasound, similar to that observed with chemical reagents used for high-alloy bronzes. The main aim of this work is to compare the effects of etching on polished metallographic samples by ultrasound in seawater with that obtained with conventional chemical agents. It can be concluded that the effect of ultrasound is able to reveal, with great precision, the microstructure of MAB alloys, without the use of aggressive chemical agents, while the time under the influence of ultrasonic energy allows for fine-tuning the etching effect.
Radical institutional changes while maintaining strong links between VET and the labour market: The Dutch VET experience
Authors: Broek Simon 
Published: May 2022

Abstract
This article intends to show that while the strong VET-labour market link has a long tradition in the Netherlands and likely maintains strong in the future, the dynamics that substantiate this link, especially in terms of institutional arrangement have seen a radical shift in the last decades. To explore the shifts we make use of Rageth and Renold (2020) model of three ideal types of linkages between education and employment system and the ideas concerning vocational and academic drift (Hippach-Schneider, 2014; Cedefop, 2017, 2020). This article is based on a literature review and case studies conducted in recent years on the Dutch system in the context of various (European) research projects. The article concludes that while the ownership for VET of the employment system decreased, the VET schools, due to the high level of autonomy and institutional capacities, were effectively able to install cooperation mechanism, joint delivery mechanisms in VET programmes and effective feedback mechanisms. The article shows that powerbalancing on VET content and supporting vocational drift does not necessarily require powerbalancing institutionally. In doing so, the article offers reflections to other countries’ VET systems on how to balance education and labour market systems in the determination of the VET content and the governance of the VET system.
Developing and validating a checklist for assessing the performance of air ambulance services
Authors: Jafari Hasan , Askari Roohollah , Montazeralfaraj Razieh , Pahlavanpoor Saeed Reza , Alsadat Kalantarzadeh Zahra 
Published: May 2022

Objective: The purpose of this study was to develop a checklist for assessing the performance of air ambulance services.
Method: This is a qualitative study. The first phase involved a review of existing documentation about air emergency standards to create a checklist of the most critical factors and components affecting the performance of air ambulance services. The second phase required experts to complete a performance evaluation checklist from the previous phase. The third phase utilized the Delphi technique to validate the performance evaluation checklist for air ambulance services. The experts in this study were 24 pundits with a vested interest in the subject.
Results: A total of 31 items exist in the area of helipad-related facilities, 17 items in the area of process requirements for medical centers with helicopter landing areas, 15 items in the category of human resources for air ambulances, 10 items in the category of human resources for receiving or delivering patients from air ambulances to medical centers, 27 items in the area of base equipment, 17 items in the area of helicopter equipment, and requirements, 14 items in the category of technical, communication, and safety equipment for use inside the helicopter, 1o items dealing with time standards, 11 items dealing with road and urban base requirements for air ambulance operations. Experts approved two items in the area of utilizing other rescue and law enforcement agencies to assist and cooperate with air emergency flights and two items in the area of comfort for conscious patients to alleviate stress during flight.
Conclusion: A performance evaluation checklist is an effective tool for evaluating the quantity and quality of emergency helicopter services provided and measuring their performance.
Opinions and suggestions of preservice special education teachers on ethical principles
Authors: Yıkmış Göksel 
Published: May 2022

This study aims to explore the opinions and suggestions of preservice special education teachers about the ethical principles that should be followed in the field of special education. The study adopted qualitative methodology. The data were collected through semi-structured interview questions. The participants of the study are senior students who study at the special education department of a faculty education in a university in the Western Black Sea region. One of the prerequisites sought for students is that they have successfully passed all junior year courses and the other is that they have taken the Ethics and Ethics in Education course. The data collected in the study were analysed through content analysis. In addition, the Maxqda programme was used in the analysis of the data. Research findings were categorised under five themes. The themes are ethical principles, ethical characteristics that special education teachers should have, ethical and unethical behaviours, the impact of training and legal regulations on ethics and suggestions of the participants on ethics were collected under the sub-categories.

Keywords: Ethics, ethics in special education, professional ethics.
Vegetation and soil succession determine the water-use strategy ofCaragana korshinskiiin a chronosequence of revegetated areas in Ningxia, Northwest China
Authors: Lei Huang , Bo Wang , Jiajia Chen , Guisen Yang , Lichao Liu 
Published: May 2022

AbstractPlant and soil properties and stable isotope data from soil and xylem samples of Caragana korshinskii from four different-aged revegetated sites (1976, 1987, 1996, and 2005) were studied in a desertified steppe ecosystem of Northwest China. Results showed that the revegetation of C. korshinskii had a positive effect on the local habitat restoration. The δ18O values of soil water at the four study sites varied between different months and exhibited a monotonic decline from the soil surface to deep soil layers. The variation of soil water δ18O values in the older revegetated sites was lower than that in the younger revegetated sites. C. korshinskii mainly tapped water from secondary (60–120 cm) and relatively stable (120–250 cm) soil water in the older revegetated site, and they had relatively slight monthly fluctuations. However, in the younger revegetated site, the contribution of active (0–60 cm) soil water increased, and they exhibited a clear shift in the water-use pattern. In the initial stage of vegetation establishment, soil water content played a major role in the plant water-use strategy, but in the middle and later stages of revegetation, plant biological characteristics and soil physical properties were the main impact factors.
Antifouling BaTiO3/PVDF piezoelectric membrane for ultrafiltration of oily bilge water
Authors: Tan Zhirong , Chen Shuiping , Mao Xin , Lv Heng , Wang Yong , Ye Xiaoqing 
Published: May 2022

Abstract
Barium titanate/polyvinylidene fluoride (BaTiO3/PVDF) piezoelectric membrane was successfully prepared and generated in-situ vibrations to reduce membrane fouling by applying alternating current (AC) signal for oily bilge water ultrafiltration. The effect of in-situ vibration on membrane fouling was investigated through changing in the excitation alternating voltage and its frequency, pH, crossflow rate. The results indicated that the piezoelectric membrane by applying AC signal remarkably alleviated the membrane fouling for bilge water ultrafiltration. The membrane fouling decreased with increasing the AC signal voltage. The final steady-state permeate flux from the piezoelectric membrane for bilge water ultrafiltration increased with the AC signal voltage, raising it by up to 63.4% at AC signal voltage of 20 V compared to that of the membrane without applying AC voltage. The high permeate flux was obtained at the resonant frequency of 220 kHz. During the 50-h ultrafiltration of bilge water with the piezoelectric membrane excited at 220 kHz and 15 V, the permeate flux from the membrane was stable. The oil concentration in outflow from the piezoelectric membrane was below 14 ppm, which met the discharged level required by IMO convention. The total organic carbon removal rate in bilge water was over 94%.
Machine Learning Prediction of Hypoglycemia and Hyperglycemia From Electronic Health Records: Algorithm Development and Validation
Authors: Witte Harald , Nakas Christos , Bally Lia , Leichtle Alexander Benedikt 
Published: May 2022

Background
Acute blood glucose (BG) decompensations (hypoglycemia and hyperglycemia) represent a frequent and significant risk for inpatients and adversely affect patient outcomes and safety. The increasing need for BG management in inpatients poses a high demand on clinical staff and health care systems in addition.

Objective
This study aimed to generate a broadly applicable multiclass classification model for predicting BG decompensation events from patients’ electronic health records to indicate where adjustments in patient monitoring and therapeutic interventions are required. This should allow for taking proactive measures before BG levels are derailed.

Methods
A retrospective cohort study was conducted on patients who were hospitalized at a tertiary hospital in Bern, Switzerland. Using patient details and routine data from electronic health records, a multiclass prediction model for BG decompensation events (<3.9 mmol/L [hypoglycemia] or >10, >13.9, or >16.7 mmol/L [representing different degrees of hyperglycemia]) was generated based on a second-level ensemble of gradient-boosted binary trees.

Results
A total of 63,579 hospital admissions of 38,250 patients were included in this study. The multiclass prediction model reached specificities of 93.7%, 98.9%, and 93.9% and sensitivities of 67.1%, 59%, and 63.6% for the main categories of interest, which were nondecompensated cases, hypoglycemia, or hyperglycemia, respectively. The median prediction horizon was 7 hours and 4 hours for hypoglycemia and hyperglycemia, respectively.

Conclusions
Electronic health records have the potential to reliably predict all types of BG decompensation. Readily available patient details and routine laboratory data can support the decisions for proactive interventions and thus help to reduce the detrimental health effects of hypoglycemia and hyperglycemia.