bluuebunny/crossref_metadata_2025_split huggingface dataset:
Utilization of Bitumen Modified with Pet Bottles as an Alternative Binder for the Production of Paving Blocks
Authors: Awolusi Temitope , Oguntayo Daniel , Deifalla Ahmed Farouk , Babalola Emmanuel , Natie Fejiro , Aladegboye Oluwasegun , Azab Marc 
Published: January 2023

This study considers the utilization of bitumen modified with molten polyethylene terephthalate (PET) waste bottles as an alternative binder in paving blocks. PET waste was used at 2, 4, 6, 8, and 10% to modify bitumen in the production of paving blocks. Compressive strength test and skid resistance test were conducted on the paving block samples to evaluate their mechanical strength properties, while water absorption and the Cantabro abrasion tests were carried out to ascertain the durability of the paving block samples. The PET-modified bitumen paving blocks (PMBPB) have enhanced compressive strength and skid resistance compared to unmodified bitumen paving blocks. Also, a significant reduction in water absorption rate of up to 56% was achieved in PET-modified bitumen paving blocks (PMBPB) compared to the unmodified sample. The abrasion loss in the PMBCB samples was the least compared to that in normal cement paving blocks and unmodified bitumen paving blocks. The maximum compressive strength and least water absorption for the PET-modified bitumen concrete paving blocks were obtained at a 10% PET replacement level. It can be concluded that enhanced compressive strength and durability in cement paving blocks and unmodified bitumen paving blocks could be achieved with the use of PET modified bitumen in concrete paving block production, and this will also encourage PET waste recycling and contribute meaningfully to sustainability in concrete paving block production. Doi: 10.28991/CEJ-2023-09-01-08 Full Text: PDF
Karakteristik Fermentasi Rumen Domba Secara In Vitro dengan Pemberian Maggot Black Soldier Fly yang Dipelihara dengan Ampas Teh dan Ampas Sagu
Authors: Fassah Dilla Mareistia , Nurhazizah Nella , Astuti Dewi Apri , Khotijah Lilis 
Published: December 2022

The objective of this study was to evaluate the chemical composition of Black Soldier Fly (BSF) maggot grown in tea waste or sago pulp medium and their effects on fermentability and digestibility (in vitro). A randomized block design with 3 dietary treatments and 4 groups of rumen source from different sheep was used in this study. Dietary treatments consisted of P1 = soybean meal protein ration, P2 = BSF maggot meal protein ration grown in tea waste, P3 = BSF maggot meal protein ration grown in sago pulp. The data were analysed using ANOVA followed by Duncan's test. The results show that the NH3 concentration was higher (p<0.05) in treatment containing maggot meal protein grown in tea waste than others. However, each treatment did not have a significant effect on pH, total VFA, dry matter digestibility and organic matter digestibility in vitro. In conclusion, BSF maggot grown in tea waste and sago pulp media can replace soybean meal as a protein source in the ration without any negative effects on in vitro fermentability and digestibility.
Key words: black soldier fly, digestibility, fermentability, in vitro, rumen microbes
Populasi Mikroba Rumen, Fermentabilitas, dan Kecernaan Suplementasi Daun Kelor dalam Ransum Sapi Perah secara In Vitro
Authors: Zahera Rika , Purwanti Junita , Evvyernie Dwierra 
Published: December 2022

This study aimed to evaluate the microbial rumen population, fermentability, and digestibility of Moringa leaf supplementation in dairy cow ration using in vitro and to determine the optimal level of supplementation. The experiment consist of two steps with the first step was microbiology measurement used a Randomized Block Design with 5 treatments level of Moringa leaf extract (P0= control; P1= 5%, P2 = 10%, P3 =15%, P4 =20%) and the second step was in vitro fermentability and digestibility measurement used Randomized Block Design with 7 treatments level of Moringa leaf in dairy cow ration (R0 = control, R1 = R0 + 2.5% Moringa leaf, R2= R0 +5% Moringa leaf, R3 = R0 + 7.5% Moringa leaf, R4= R0+10% Moringa leaf, R5=R0+12.5% Moringa leaf, R6=R0+15% Moringa leaf) which grouped by rumen fluids. Data analysis used analysis of variance and continued with Duncan’s Multiple Range Test. The measured variable were microbial rumen population (bacteria and protozoa), fermentability (N-NH3, VFA), microbial protein synthesis, dry matter digestibility (DMD), and organic matter digestibility (DMO). The results showed Moringa leaf extract significantly decreased bacterial population (p<0.05), but there was no effect on the protozoa population. Moringa leaf supplementation did not affect N-NH3, DMD, and DMO, but significantly influenced VFA concentration and microbial protein synthesis (p<0.01). The higher Moringa leaf supplementation showed decreasing total VFA concentration, but was still within the normal range for rumen fermentation (102.29-126.69 mM). Moringa leaf supplementation showed a quadratic effect on microbial protein synthesis with an optimal supplementation level of 5%, but decreasing at a level of 7.5% still within in normal range. It can be concluded Moringa leaf can be supplemented up to 7.5% in dairy cow ration.
Key words: digestibility, fermentability, in vitro, moringa leaf, dairy cow
Evaluasi Kebutuhan Nutrien dan Suplementasi Zinc untuk Calon Galur Ayam IPB-D2 Fase Pre-layer
Authors: Falah Fadhilah Dhani Santika , Sumiati  , Sumantri Cece , Suci Dwi Margi 
Published: December 2022

This study aimed to evaluate nutrient requirements and zinc supplementation for IPB D-2 pre-layer chicken line candidates on performance, blood profile, and blood malondialdehyde (MDA). This study used 200 of 16 weeks IPB-D2 chickens line candidates reared until 19 weeks of age (pre-layer phase). This study used a completely randomized design (CRD) with 2 treatments and 10 replications. The treatment rations were formulated to fill the chicken nutrient requirements according to Lohman (2020) without the addition of Zinc and with the addition of 120 ppm Zinc. The data were analyzed using the T test. The results showed that the ration supplemented with 120 ppm zinc did not significantly affect performance, but it was able to increase body weight uniformity. The 120-ppm Zinc supplementation significantly (p<0.05) decreased erythrocytes, however it tended to lower blood MDA. In conclusion, 120 ppm Zinc supplementation in the ration is sufficient to meet the nutrient requirement of IPB-D2 chicken line candidates in the pre-layer phase.
Key words: IPB-D2 chicken line candidates, Zinc, performance, blood profile, MDA
KAJIAN PENDUGA FUNGSI RAGAM PROSES POISSON PERIODIK MAJEMUK DENGAN TREN FUNGSI PANGKAT
Authors: Fajri Ahmad , Mangku I Wayan , Hadi Sumarno  
Published: December 2022

Pada artikel ini dibahas tentang pendugaan fungsi ragam pada proses Poisson periodik majemuk yang mempertimbangkan kehadiran tren fungsi pangkat. Penulisan artikel ini bertujuan untuk mengonstruksi penduga, memeriksa kekonsistenan penduga, menganalisis bias, ragam dan mean squared error (MSE) asimtotik penduga, serta menentukan ukuran interval pengamatan proses terpendek sehingga nilai dugaan yang diperoleh sudah mendekati parameter yang diduga menggunakan simulasi komputer. Hasil kajian yang telah diperoleh berupa rumusan penduga fungsi ragam, syarat-syarat agar penduga yang dirumuskan kokonsisten, rumusan bias asimtotik, ragam asimtotik dan MSE asimtotik penduga. Berdasarkan hasil simulasi diperoleh bahwa penduga sudah mendekati nilai parameter yang diduga jika panjang interval waktu pengamatan adalah 5500.
PENINGKATAN PENGETAHUAN TENTANG PAPSMEAR SEBAGAI UPAYA DETEKSI DINI KANKER SERVIKS DI DUSUN BIRING ROMANG
Authors: Sari Lili Purnama , Bahrum Sri Wahyuni 
Published: December 2022

Angka kejadian kasus kanker leher rahim (kanker serviks) di Indonesia menempati nomor dua tertinggi di dunia. Kanker leher rahim sering tidak menimbulkan gejala dan sulit terdeteksi pada stadium awal dan umumnya baru terdeteksi ketika sudah stadium lanjut. Informasi mengenai kanker serviks masih kurang dipahami oleh sebagian besar wanita usia subur (WUS) di Indonesia. Kegiatan pengabdian masyarakat ini bertujuan untuk memberikan pengetahuan kepada ibu pentingnya melakukan papsmear dan bahaya dari kanker mulut Rahim. Metode pelaksaan dari kegiatan ini adalah pengukuran dengan one grop test design pre-post menggunakan kuesioner sebagai alat ukur untuk mengetahui pengatahuan ibu. Pengukuran pertama sebelum edukasi dan pengukuran kedua setelah dilakukan edukasi Tentang pentingnya pemeriksaan Pap Smear sebagai upaya deteksi dini Kanker serviks. Dari Hasil analisis pre test sebanyak 65% wanita usia subur yang menjadi responden tidak mengetahui tentang pentingnya melakukan pemeriksaan Papsmear sebagai salah satu upaya deteksi dini kanker serviks dan setelah dilakukan penyuluhan hasil Post Test menunjukkan sebanyak 89% wanita usia Subur memahami tentang pentingnya melakukan pemeriksaan Papsmear sebagai salah satu upaya deteksi dini kanker serviks. Semua peserta sangat Antusias dalam mendengarkan informasi yang di sampaikan, sebagian peserta kegiatan menyatakan pendapat bahwa kegiatan yang dilaksanakan sangat memberikan manfaat khususnya meningkatkan pengetahuan dan rasa percaya diri sebagai seorang perempuan untuk menjaga Kesehatan perempuan. Peserta penyuluhan yakni semua Wanita Usia Subur dapat memahami tentang pentingnya pemeriksaan Pap Smear sebagai Upaya Deteksi dini kanker Serviks. Masyarakat berharap adanya pemeriksaan papsmear gratis yang diadakan sehingga mereka mampu mengetahui keadaan serviksnya.
Effect of Different Calcium Salts on Calcium Carbonates Formation Induced by Halophilic Bacillus oceanisediminis CB1
Authors: Bhagat Chintan , Bhavsar Sunil , Patel Rajesh , Ghelani Anjana , Dudhagara Pravin , Chaudhari Rajesh 
Published: December 2022

Biomineralization through the biomimetic CO2 sequestration process has been gaining attraction in recent years due to the formation of carbonates widely used as raw material in various industrial processes. The deposition and dissolution of calcium carbonate can be affected by physiochemical factors, such as the type of calcium salt. However, most studies have focused on calcium chloride (CaCl2). In the present study, A potent bacterial carbonic anhydrase (CA) producer, Bacillus oceanisediminis CB1, was screened on CA activity from mangrove plant Avicennia marina, collected from Ghogha, Bhavnagar, India (21.68°N 72.28°E). We premeditated deposition experiments to determine the effects of different calcium salts on calcium carbonate deposition in Bacillus oceanisediminis CB1 colonies. The results demonstrated the calcite formation observed in calcium salt-supplemented nutrient agar, calcium chloride, and calcium acetate. Merely uniform distribution and peripheral distribution of calcite particles found in calcium acetate and calcium chloride supplemented into nutrient agar, respectively. Calcite formation was confirmed by staining with Alizarin Red S dye followed by SEM-EDX. This study will provide a vital reference for designing and applying microbial-induced carbonate precipitation using different calcium salts.
EFFECT OF BETEL LEAF EXTRACT (Piper betle L.) ON Aeromonas hydrophila DISEASES IN TILAPIA (Oreochromis niloticus) SEED
Authors: Zaeroni Ahmad , Nuraini Setyowati Dewi , Azhar Fariq 
Published: December 2022

Seed is essential in aquaculture activities, but tilapia hatcheries often suffer from disease attacks caused by Aeromonas hydrophila bacteria, causing losses for hatchery businesses. One of the natural ingredients for treating Aeromonas hydrophila is betel leaf extract. This study aims to analyze the effect of betel leaf extract (Piper betle L.) on Aeromonas disease hydrophila on fish fry tilapia (Piper betle L.). This study used a completely randomized design (CRD) with 5 treatments and 3 replications. The treatment used was a dose of betel leaf extract (P1) 0.4 ml, (P2) 0.6 ml, (P3) 0.8 ml, (P4) positive control, (P5) negative control. The parameters observed were survival rate, specific growth rate, feed conversion ratio, absolute length growth, erythrocytes, hemoglobin, hematocrit, leukocytes, differential leukocytes, total bacteria count, and water quality. The results of this study showed that before and after the challenge test, the best average values were P3 leukocytes (1.06 and 1.4 x 10 5 ), erythrocytes (0.90 and 0.93 x 10 5 ), hemoglobin (10.9 and 9.7), hematocrit (10.7 and 10.3), total bacteria (7 x 10 1 ). Then the worst value on P1 leukocytes (0.74 and 0.87 x 10 5), erythrocytes (0.86 and 0.75 x 10 5 ), hemoglobin (10.7 and 7.7), hematocrit (10.3 and 9.3), total bacteria (74 x 10 2 ). The study concluded that the best treatment was found in treatment 3 with a dose of 0.8 ml of betel leaf extract, which significantly increased the immune system in tilapia seeds.
ANTIBACTERIAL EFFECTIVENESS OF BLACK QUICK (Nigella sativa Linn) EXTRACT ON BACTERIA INHIBITORY Aeromonas hydrophila, AND MORPHOLOGY FISH INDIGO (Oreochromis niloticus) POST INFECTION
Authors: Maharani Dwi Elfa , Lumbessy Salnida Yuniarti , Azhar Fariq 
Published: December 2022

The main problem in cultivation is a disease that causes less optimal growth and even death. This study aims to analyze the effectiveness of black cumin extract on the inhibition of A. hydrophila bacteria, analyze its active ingredients, analyze its toxicity level to Tilapia, and analyze the effect of the extract on the survival rate and morphology of Tilapia after being infected with A. hydrophila bacteria. The method used was a completely randomized design (CRD) which consisted of 3 stages. Inhibition zone with 5 treatments 2 repetitions, namely P0 (aquades), P1 (25%), P2 (50%), P3 (75%), and P4 (100%). LC50 with 4 treatments 2 replications using regression analysis with the help of the probit table. In Vivo with 6 treatments, 3 replicates, namely P0 (NaCl injection) as a control-, P1 (bacterial injection) as control+, P2 (250 ppm), P3 (500 ppm), P4 (750 ppm), P5 (1000 ppm). The results showed that black cumin seed extract with various concentrations affected the inhibition of A. hydrophila, SR, and Tilapia morphology after infection with bacteria. The test of inhibition with concentrations of 25%, 50%, 75%, and 100% can inhibit the growth of bacteria A. hydrophila because it contains antibacterial activity compounds. The extract has toxic properties to Tilapia (LC50=220.23 ppm). Soaking fish for 30 minutes in the I n Vivo test P3 treatment is the best treatment because it can provide a high SR of 73.3 %. However, at high concentrations, it can reduce fish survival.
Hamster (Cricetinae) Motion Assisted by Video Tracker Application on Motion Materials in Junior High School
Authors: Sariyah Sariyah , Kuswanto Heru , Nurcahyo Heru , Ilma Arina Zaida , Hujatulatif Adha 
Published: January 2023

This study aims to explain the phenomenon of motion in hamsters moving in a rolling wheel. Motion is one of the materials taught at the 7th-grade junior high school. The study can be used in learning with the practicum method, namely animal motion. Hamster (Cricetinae) motion is analyzed using a video tracker analysis application with a javascript program. This study used a direct experiment using a hamster using four reference points, namely the forelegs, head, middle body, and hind legs. The results of data analysis from the tracker application were processed using the Microsoft Excel program to obtain a graph of changes in the position and velocity of the hamster. Hamster motion on the rolling wheel is a type of translational motion, namely uniform linear motion. Changes in the hamster's position indicate motion on a horizontal line. The velocity obtained in the tracker application is more accurate than manual calculations.
Ethnoscience Studies in Songket Sasak Cloth Motifs: Prospective Science Teacher Perceptions
Authors: Muliadi Agus , Suhirman Suhirman , Wazni M. Khairul , Yamin M. , Khery Yusran 
Published: January 2023

The aims of this study were to explore the perceptions of prospective science teachers towards ethnoscience studies in the songket cloth motif of the sasak tribe. This exploratory research conducted in three education study programs namely Biology, Chemistry, and Physics Education with 53 prospective science teachers involved as research subject. Closed questionnaire with likert scale and expertly validated applied for data collection. The data were analyzed by quantitative descriptive statistics, Anova test and t-test inferential statistics. The results showed that (1) perception of prospective science teachers has an average score in the "Good" category in terms of gender, regional origin, and study program; (2) there were no significant differences in the perceptions in male and female prospective science teacher based on t-test significance value of 0,455 > 0,05; (3) there were no significant difference in prospective science teacher’s perception refer to origin (native Lombok and non-native) based on t test significance value of 0,466 > 0,05; (4) there were no significant difference in the perception of prospective science teachers in the biology, chemistry, and physics education study program based on Anova's significance value of 0,423 > 0,05.
A preliminary study on the formulation of indicators and definitions of mathematical bitterness related to teacher treatment
Authors: Dirgantoro Kurnia Putri Sepdikasari , Soesanto Robert Harry , Yanti Yanti 
Published: January 2023

Teachers are responsible for helping students to understand and admire subjects, which means they need first to appreciate what is supposed to be taught. Meanwhile, some intern teachers detest several subjects due to the unpleasant treatment received from their tutors. This study intends to clarify the definition of mathematical bitterness and develop its indicators. The respondents were seven third-year students at Pelita Harapan University, Indonesia. Data were collected using questionnaires and interviews and analyzed through descriptive qualitative with a phenomenological approach. The results showed that the indicators of bitterness in mathematics sprang from the following, 1) having experienced unpleasant treatment from a mathematics teacher for a long time, 2) having a negative view of mathematics, 3) feeling untalented in mathematics, 4) viewing the mathematics teacher as unfriendly, 5) poor mathematics learning performance, and 6) having high mathematical anxiety. The proposed definition of bitterness is a negative perception of mathematics that is built from the accumulation of past experiences that affect the student’s response to this subject. Hence, further studies are needed to provide solutions that help to heal students of their math bitterness.
Minuus ja menneet huoneet – Päiväkirjakirjoittaminen minuuden rakentamisena ja maailman säilyttäjänä
Authors: Kujala Johanna 
Published: December 2022

Päiväkirjojen jäljillä. Historiantutkimus ja omasta elämästä kirjoittaminen -teos on kulttuurihistoriallisesti suuntautunut ja se on lähtökohdiltaan nykyisessä elämänkerronnan (life writing) tutkimuksessa, joka keskittyy tarkastelemaan monimuotoisia omaelämäkerronnallisia kirjoittamisen ja itsestä kertomisen tapoja. Tutkimuksellisesti teoksen artikkelit kiinnittyvät suomalaiseen ja eurooppalaiseen traditioon. Päiväkirjojen välittämät – sekä menneet että nykyiset – tunteet ja kokemuksellisuus ovat teoksen kantavana teemana. Ne ovat toisaalta tutkijan tarkastelussa päiväkirjojen riveíllä, ja toisaalta riveiltä luettu herättää tunteita, joita artikkeleiden kirjoittajat eivät myöskään jätä huomiotta.
Kirjan kirjoittajat ovat historian - , kirjallisuuden – ja kulttuurintutkijoita, pyrkimyksenään nähdä päiväkirjan kirjoittaminen laajassa historiallisessa kontekstissa. Teoksessa tarkastellut päiväkirjat edustavat pitkällä aikavälillä päiväkirjakirjoittamisen historiaa: vanhin teoksessa käsitelty päiväkirja luotaa antiikin ajan sotaretkien herättämiä tuntoja ja tuoreimmat sijoittuvat 2000-luvulle.
Influence of micro boron carbide particles on microstructure, mechanical properties, and dry sliding wear strength of an aluminium Al2214-B4Cp metal matrix composite
Authors: K Revanna , R Suresh 
Published: January 2023

In this experimental research, an attempt is made to develop Al2214-B4Cp composite materials with reinforcement of micro boron carbide (B4Cp) (viz. 0, 1.5, 3, 4.5, and 6 wt.%) by using a novel liquid metallurgical stir casting technique with modified bottom pouring facilities and studying the microstructure, physical, mechanical, and dry sliding wear resistance responses. The microstructure of Al2214-B4Cp composite samples with varied boron carbide weight percentages was examined under an electronic scanning microscope (SEM) equipped with an energy dispersive X-ray spectrometer (EDX) device. The physical characteristics like density and porosity, mechanical strength, such as micro and macro hardness, yield and ultimate tensile strength, and sliding wear response were examined under variable experimental conditions. The experimental results of the Al2214-B4Cp composite revealed a decreased specific density with an increased weight percentage of boron carbide (B4Cp) particulate in the matrix and a homogeneous distribution of reinforced micro boron carbide (B4Cp) particles in the Al2214 matrix. There was an appreciable improvement in mechanical properties and wear strength in composite materials as compared to an unreinforced aluminium alloy.
Manajemen Nyeri dengan Guide Imagery Relaxation pada Pasien Cedera Kepala Ringan di Instalasi Gawat Darurat (IGD) : Literature Review
Authors: Firmada Mifta Ayu , Kristianti Mila , Husain Fida 
Published: December 2022

Latar Belakang: Cedera kepala ringan (CKR) adalah suatu keadaan dimana GCS antara 13-15, dapat terjadi kehilangan kesadaran tidak lebih dari 10 menit. Manifestasi klinis pasien CKR ditemukan nyeri kepala, diziness atau keduanya sebanyak 57%. Penanganan CKR dapat dilakukan dengan terapi nonfarmakologi yaitu guide imagery. Guide imagery suatu terapi menggunakan kekuatan pikiran untuk menyembuhkan diri/ relaksasi melalui komunikasi dalam tubuh. Tujuan: tujuan dari literature review ini adalah untuk mengidentifikasi manajemen nyeri non farmakologi pada pasien CKR di Instalasi Gawat Darurat (IGD). Metode: Pencarian database ini dilakukan dengan penelusuran di Google Scholar dengan kata kunci guide imagery, cedera kepala ringan, nyeri. Kriteria inklusi dari literature review ini yaitu artikel yang dipublikasikan dalam kurun waktu 5 tahun terakhir dengan tahun terbit 2015-2020, full text, menggunakan bahasa indonesia, artikel yang digunakan adalah artikel eksperimental. Hasil: intervensi yang dapat dilakukan pada saat terjadi nyeri pada cidera kepala ringan yaitu guide imagery serta dapat dikombinaksian dengan sloowdeep breathing. Kesimpulan: semua intervensi hasil luteratur review ini berupa pemberian gudie imagery serta pemberian relaksasi nafas dalam atau sloowdeep breathing.