bluuebunny/crossref_metadata_2025 huggingface dataset:
Effect of dose of equine chorionic gonadotrophin on the estrus responses of gilts and weaned sows and effect of the interval between equine chorionic gonadotrophin and luteinizing hormone injections on sow performance
Authors: Cassar G , Friendship Robert , Zak L , Rogan D , Kirkwood Roy
Published: August 2024

Objectives: To determine estrus and ovulation responses of gilts and sows to different doses of equine chorionic gonadotrophin (eCG), with different intervals between eCG and luteinizing hormone (pLH) injections. Materials and methods: Experiment One: gilts received 0 (Control; n = 20), 600 (n = 42), or 900 (n = 42) IU eCG, then were exposed to a boar daily for estrus detection. Experiment Two: weaned primiparous sows received 600 (n = 56) or 900 (n = 59) IU eCG, 2.5 mg pLH 80 hours later, and a single insemination 36 hours after pLH. Controls (n = 43) received no hormones and were inseminated at estrus detection and 24 hours later. Experiment Three: weaned mixed-parity sows received 600 IU eCG at weaning and 2.5 mg pLH 72 (n = 107) or 80 hours (n = 116) later, or served as Controls (n = 66). Sows were inseminated as for Experiment Two. Results: Experiment One: rate of ovulation was greater at the higher eCG dose (P < .05). Experiment Two: sows receiving 900 IU eCG had a higher farrowing rate than controls (P = .03), with sows receiving 600 IU eCG being intermediate. Litter sizes were unaffected. Experiment Three: farrowing rates were higher for the eCG treatment than for Controls (P < .05). Litter sizes were unaffected. Implications: These data suggest that the dose of eCG should be 900 IU for induction of estrus in young females. For controlled ovulation, the eCG-pLH interval can be reduced to 72 hours without affecting reproduction.
Longitudinal field study of the effect of a commercial porcine circovirus type 2 vaccine on postweaning mortality in New Zealand farms
Authors: Neumann Eric , Simpson Sarah , Wagner Julie , Karaconji Branko
Published: August 2024

Objective: To evaluate the efficacy of a commercial porcine circovirus type 2 (PCV2) vaccine in reducing postweaning mortality in a multi-site field setting. Materials and methods: In 2007, a PCV2 vaccine recommended for use in piglets ≥ 4 weeks of age was made available in New Zealand for control of porcine circovirus associated disease (PCVAD). The effectiveness of vaccination in reducing mortality attributed to the disease was determined on nine farms that met the New Zealand case definition for postweaning multisystemic wasting syndrome (PMWS), a specific clinical expression of PCVAD. During 2006 and 2007, mortality data were collected from 138 groups of pigs affected by PMWS but not vaccinated and 67 groups affected by PMWS but immunized with PCV2 vaccine. Historical data were available from 130 groups on the study farms prior to the appearance of PMWS. Results: Average postweaning mortality prior to the appearance of PMWS was 2.86%. After farms were affected by PMWS, postweaning mortality averaged 10.38%, a response consistent with other reports of the disease. Subsequent to instituting use of PCV2 vaccine on these affected farms, mean postweaning mortality was 5.02%. Implications: Use of PCV2 vaccine is effective in reducing the level of postweaning mortality on farms affected with PMWS, although it may be unable to return mortality to levels seen prior to occurrence of the disease.
Reproductive failure associated with porcine parvovirus and possible porcine circovirus type 2 co-infection
Authors: Woods Amy , McDowell Emily , Holtkamp Derald , Pogranichniy Roman , Gillespie Thomas
Published: August 2024

A 2400-sow multi-site commercial herd experienced an outbreak of reproductive failure characterized by a dramatic increase in mummified fetuses, primarily in primiparous animals. Multiple samples of mummified and stillborn fetuses, placenta, and weak liveborn pigs were submitted to the diagnostic laboratory. Diagnostic testing for porcine parvovirus (PPV) in tissue sections was positive by virus isolation and direct fluorescent antibody. Antibodies to PPV were detected by indirect fluorescent antibody (IFA) and competitive enzyme-linked immunosorbent assay. Porcine circovirus type 2 (PCV2) was also diagnosed by polymerase chain reaction, and antibodies were detected by IFA. Mummified fetuses in gilt litters rose acutely from 3.9% to 31.5%, but in multiparous animals during the same time period, the rate rose only slightly, from 3.2% to 4.2%. At its peak, the mummified-fetus rate in gilt litters reached 61.0%. Mid- to late-term gilt abortions also increased significantly during the affected time period. Although all animals were vaccinated for PPV during the isolation-acclimation period, it still became an apparent cause of severe reproductive failure. The role of PCV2 in this case is unclear, but PCV2 may have contributed to the severity of the outbreak as a co-infection or by interfering with the effectiveness of the PPV vaccine.
Feed additives for swine: Fact sheets – prebiotics and probiotics, and phytogenics
Authors: Jacela Jay , DeRouchey Joel , Tokach Mike , Goodband Robert , nelssen Jim , Renter David , Dritz Steve
Published: August 2024

This is the last in a series of peer-reviewed practice tip articles, each including two or three fact sheets on feed additives for swine.
Benefits of synchronizing ovulation with porcine luteinizing hormone in a fixed-time insemination protocol in weaned multiparous sows
Authors: Zak L , Patterson J , Hancock J , Hockley D , Rogan D , Foxcroft George
Published: August 2024

Objective: To determine reproductive performance of weaned sows inseminated twice at fixed times after controlling time of ovulation with porcine luteinizing hormone (pLH) administered at onset of behavioral estrus. Materials and methods: Multiparous sows were randomly assigned to treatment at weaning. From weaning, twice-daily boar exposure facilitated estrus detection. Untreated control sows (n = 150; CONT) were artificially inseminated at least twice. Treated sows (n = 168; LUT) received 5 mg pLH intramuscularly concomitant with the first detection of standing heat. To coincide with the normal working day, sows in estrus in the morning were inseminated at 24 and 30 hours (am and pm), while sows in estrus in the afternoon were inseminated at 24 and 42 hours (pm and am), after pLH administration. Results: For multiparous sows bred on days 4 to 6 after weaning, total-born litter size was greater in LUT than in CONT (12.88 and 11.80, respectively; P < .01), whereas adjusted farrowing rate was not affected by treatment, (LUT, 87.28%; CONT, 83.20%; P > .05). Neither variable was affected by day of breeding or a treatment × day interaction (P > .05). Fewer inseminations (P < .001) were performed in LUT (2.00) than in CONT (2.13). Implication: Double insemination of multiparous sows, timed to coincide with optimal sow fertility, may improve litter size.
Evaluation of in vitro bactericidal activity of commercial disinfectants against Lawsonia intracellularis
Authors: Wattanaphansak Suphot , Singer Randall , Gebhart Connie
Published: August 2024

Objective: To evaluate the bactericidal activity of seven commercial disinfectants against Lawsonia intracellularis using a tissue culture system. Materials and methods: Two L intracellularis isolates were tested for susceptibility to several classes of disinfectants, including iodine, a biguanide, phenol, an oxidizing agent, a quaternary ammonium compound (QAC), and the combinations of QACs with aldehydes (formaldehyde and glutaraldehyde). All disinfectants were diluted with simulated hard water by adding 400 or 1000 ppm of calcium carbonate (CaCO3) and 5% fetal bovine serum (FBS). The effects of disinfectant concentrations (0.5×, 1×, and 2× the recommended dose) and exposure times (10, 30, and 60 minutes) at each concentration were investigated. Results: The susceptibilities of both L intracellularis isolates to the disinfectants were similar. When recommended doses of disinfectants were tested for 10 minutes at 400 ppm of CaCO3 and 5% FBS, both L intracellularis isolates were completely inactivated with QAC and the combinations of QAC with aldehydes. Inactivation was ≥ 99% with the oxidizing agent, 90% to 99% with the biguanide and phenol, and < 90% with iodine. At a CaCO3 concentration of 1000 ppm, the efficacies of combinations of QAC with glutaraldehyde were unchanged, while efficacies of the other disinfectants were reduced slightly. Implications: These data provide an in vitro guide for disinfectant selection to control L intracellularis. The results suggest that QAC, the combinations of QACs with aldehydes, and oxidizing agents would perform well for inactivation of L intracellularis under field conditions.
Immunocontraception in male feral swine treated with a recombinant gonadotropin-releasing hormone vaccine
Authors: Campbell Tyler , Garcia Michelle , Miller Lowell , Ramirez Martha , Long David , Marchand Jean-Baptiste , Hill Fergal
Published: August 2024

Objective: To determine if a recombinant gonadotropin-releasing hormone (GnRH) vaccine is a potential immunocontraceptive agent for juvenile male feral swine. Materials and methods: At the beginning of the trial (Day 0) we treated animals in Treatment One with a single injection of a sham vaccine containing 1 mL of a buffer-adjuvant emulsion (adjuvant: AdjuVac; National Wildlife Research Center, Fort Collins, Colorado). Treatment Two received 1000 μg of a recombinant GnRH (rGnRH) vaccine (IMX294; Imaxio, Lyon, France). Treatment Three received 500 μg of a rGnRH vaccine. Treatment Four received 1000 μg of a GnRH vaccine (GonaCon; National Wildlife Research Center, Fort Collins, Colorado). On Day 90, Treatment Three received an additional 500-μg boost treatment. All vaccines were emulsified with AdjuVac and injected intramuscularly into the rump. On Day 180, we performed necropsies on swine and compared mass of testes, percent normal seminiferous tubules, numbers of spermatogonia, spermatocytes, and spermatids, serum testosterone levels, and anti-GnRH antibody titers among treatments. Results: As expected, a single dose of GonaCon vaccine reduced testes mass, serum testosterone, and percent normal tubules, and restricted sperm development at each stage. These reductions in reproductive development were associated with elevated GnRH antibodies. The single injection of rGnRH was not as effective in reducing these reproductive parameters; however, the two-dose injection of rGnRH was as effective as the single injection of GonaCon. Implication: Further research and development is needed into oral immunocontraceptive vaccines and oral delivery systems.
Enteritis in grower-finisher pigs caused by F18-positive Escherichia coli
Authors: Pittman Jeremy
Published: August 2024

Escherichia coli is a common cause of postweaning diarrhea in swine, but usually does not affect grower-finisher pigs. Eleven-week-old grower pigs presented with an acute and severe watery diarrhea, initially considered to be transmissible gastroenteritis. Diagnostic submissions showed the causative agent to be an F18-positive E coli producing shiga-like toxin. No pigs developed neurological signs or other conditions usually associated with edema disease. Affected pigs responded to treatment with neomycin. No significant difference was observed in mortality or growth performance between clinically affected and unaffected groups. This case report describes an unusual presentation of F18-positive E coli infection in 11-week-old pigs.
Claw horn growth and wear rates, toe length, and claw size in commercial pigs: A pilot study
Authors: vanAmstel Sarel , Doherty Thomas
Published: August 2024

Mean claw horn growth and wear rates in three commercial gilts were greater for rear feet and for the caudal wall. Outer and inner claws differed in size for rear feet, but not for front feet. Lesions occurred mainly in the outer claws of rear feet.
Relationships among gilt and sow live weight, P2 backfat depth, and culling rates
Authors: Hughes P , Smits R , Xie Y , Kirkwood Roy
Published: August 2024

To examine a high culling rate problem, data were collected on 2154 sows culled from a commercial 5400-sow farrow-to-finish unit in New South Wales, Australia, during a 12-month period. Data recorded were parity, body weight, P2 backfat depth, and reason for culling. Additionally, body weights and backfat depths were recorded for a cross-section of the herd (3378 sows) in order to provide control sows for comparison. Reasons for culling were 63.7% for reproductive inefficiency or failure, while a further 12% were due to locomotor problems. Of females culled for reproductive reasons, 42.2% were gilts, indicating gilt management to be a major contributor to the high culling rate. When adjusted for parity, season, and day relative to weaning, culls had lower body weights (P < .05) and less backfat depth (P < .001) than controls (209.7 versus 211.4 kg and 14.8 versus 15.3 mm for culls and controls, respectively). These data suggest that inadequate sow nutrition was a contributor to the high culling rates, although the main problem was gilt management. Studies are ongoing to determine effects on retention of increased backfat and body mass of gilts at breeding and of providing increased dietary protein to younger sows.
Renewable energy and economic growth
Authors: Zakirova Dilnara , Ospanova Anar , Abaidullayeva Madina , Sultanova Zamzagul , Ryvkina Natalya
Published: August 2024

Relevance. The relevance of the study is that energy conversion based on renewable sources can help accelerate economic growth, create millions of jobs, and improve people's living conditions. Purpose. The aim of the research is to examine the present facets of renewable energy and its influence on economic development. Methodology. The study employed comparative, functional, and system analysis approaches to assess the impact of renewable energy on economic growth. Comparative analysis examined varying conditions, functional analysis explored interdependencies between renewable energy elements, and system analysis modeled complex interactions between renewable energy and economic factors. Results. The study found that renewable energy conversion can significantly accelerate economic growth by creating millions of jobs and improving living conditions. It revealed that renewable energy sources are more cost-effective compared to fossil fuels and nuclear energy, and they have the potential to reduce the incidence of air pollution-related deaths by 7 million annually. Technological advancements such as clean hydrogen and electrification in transportation and heating are pivotal in decarbonising hard-to-transition sectors. Conclusions. Renewable energy not only addresses climate change but also serves as a catalyst for economic recovery and growth, particularly in times of crisis. The shift towards renewable sources presents a dual benefit: mitigating climate impact and providing economic stability through job creation and health improvements. The study underscores the importance of embracing renewable energy as a strategic response to both environmental and economic challenges. Keywords: renewable energy; economic growth; crisis, climate; energy sources; jobs
Keragaman Morfologi Tanaman Kepel (Stelochocarpus burahol Hook F & Thomson) di Desa Burikan, Kecamatan Mlati, Kabupaten Sleman, Yogyakarta
Authors: Pamungkas Puguh Bintang , Ifah Arini Al , Hendratno Arif
Published: August 2024

Tanaman kepel (S. burahol Hook F & Thomson) merupakan tanaman identitas dari Daerah Istimewa Yogyakarta yang sulit ditemukan karena telah langka. Kelangkaan tersebut disebabkan oleh adanya anggapan di masyarakat bahwa tanaman kepel sebagai tanaman Keraton sehingga masyarakat tidak berani untuk menanamnya. Upaya konservasi untuk pelestarian tanaman kepel hingga saat ini belum banyak dilakukan. Konservasi bertujuan untuk menyediakan sumber daya genetik sehingga tersedia apabila dibutuhkan. Oleh karena itu, penelitian ini bertujuan untuk mengidentifikasi tentang keragaman morfologi tanaman kepel di Desa Burikan Kecamatan Mlati Kabupaten Sleman Daerah Istimewa Yogyakarta. Pelaksanaan penelitian dilaksanakan melalui beberapa tahap, dimana tahap (i) survey kepada masyarakat sekitar, kemudian dilanjutkan tahap (ii) identifikasi lokasi dan pengambilan data primer serta sekunder. Pengamatan dilakukan pada karakter morfologi pohon dan daun. Data hasil pengamatan disajikan dalam bentuk skoring dan dilanjutkan pengelompokan data matriks (Cluster Analysis) dan pembuatan dendogram Unweigthed Pair Group Method Arithmetic Average (UPGMA) menggunakan program MVSP (Multi Variate Statistical Package) version 3.22. Hasil penelitian menunjukkan bahwa nilai keragaman tanaman kepel berdasarkan morfologi pohon sebesar 0-80%, artinya hanya 20% kemiripan dari karkteristik pohon tanaman kepel yang dijumpai. Sedangkan nilai keragaman tanaman kepel berdasarkan morfologi daun sebesar 0-89%, artinya hanya 11% kemiripan dari karakteristik daun tanaman kepel yang dijumpai.
Aktivitas Antioksidan dan Mutu Organoleptik Minuman Serbuk Instan Jeruk Nipis (Citrus aurantifolia)
Authors: Prasetiyo Nanag Dwi , Budiandari Rahmah Utami , Ningrum Linda Wige , Hudi Lukman
Published: August 2024

Citrus aurantifolia, yang juga dikenal sebagai jeruk nipis,adalah salah satu kategori tanaman yang diperdagangkan secara bebas yang dikembangkan di Indonesia. Pengolahannya menjadi serbuk minuman instan memudahkan konsumsi, meningkatkan nilai jual dan  meningkatkan stabilitas fisik buah sehingga dapat dipasarkan lebih luas. Minuman fungsional, pada dasarnya, harus melampaui dua manfaat yaitu memberikan pengaruh fisiologis yang menguntungkan bagi tubuh dan karakteristik sensorik misalnya cita rasa yang lezat atau bertekstur baik.Tujuan studi untuk menentukan aktivitas antioksidan dan mutu organoleptik minuman instan bubuk jeruk nipis. Studi ini menggunakan Rancangan Acak Kelompok (RAK) faktorial, faktor pertama konsentrasi maltodekstrin (10%,15% dan 20%) dan faktor kedua suhu pengeringan (50℃, 60℃, dan 70℃), dilakukan 3 kali pengulangan. Data dianalisis dengan ANOVA dilanjut dengan uji BNJ taraf 5%. Berdasarkan hasil tersebut, nilai IC50 dari masing-masing perlakuan menunjukkan nilai yang berkisar antara 58,69 ppm-13,89 ppm, mutu organoleptik aroma sebesar 2,90-3,70, organoleptik warna sebesar 3,03-4,57, organoleptik tekstur sebesar 3,07-4,0, organoleptik rasa sebesar 2,87-3,37.Hasil perhitungan perlakuan terbaik adalah serbuk jeruk nipis dengan perlakuan konsentrasi maltodekstrin 20% dan suhu pengering 60°C yang menunjukan nilai aktivitas antioksidan (IC50) 105,16 ppm (sedang), organoleptik warna 3,90 (netral mendekati suka), organoleptik aroma 3,70 (netral mendekati suka), organoleptik rasa 3,31 (netral) dan organoleptik tekstur 4,03 (suka).
Analisis Sikap Konsumen Terhadap Produk Tahu Goreng Syari’ah Urang Awak Di Pasar Ibuh Kota Payakumbuh
Authors: Susandra Elvina , Alfikri Alfikri , Nefri John
Published: August 2024

Abstract. The company Tahu Urang Crew is one of the experienced tofu companies in Payakumbuh which has been established since 1998 and is still surviving amidst the intense competition in the Payakumbuh tofu industry to date. This study aims to determine the ideal attributes according to consumers. The research method used is descriptive analytical method. Based on the results of the research, the product attributes of urang crew fried tofu as a whole are close to the consumer's ideal, which is nutritional content sequentially. While the packaging attributes do not meet the ideal consumer characteristics. Based on the analysis of the importance level of the attributes of the urang crew fried tofu product, it is known that the attribute that is prioritized by consumers in consuming sequentially is taste. The results of the study showed that the overall attitude of consumers towards fried tofu urang crew was very good.
 
Abstrak. Perusahaan tahu urang awak merupakan salah satu perusahaan tahu yang berpengalaman di Payakumbuh yang telah berdiri sejak tahun 1998 dan masih tetap bertahan di tengah persaingan yang ketat di industri tahu kota payakumbuh sampai saat ini. Penelitian ini bertujuan untuk mengetahui atribut yang ideal menurut konsumen dan sikap konsumen terhadap tahu goreng urang awak. Metode penelitian yang digunakan yaitu metode deskriptif analitis. Berdasarkan hasil penelitian atribut-atribut produk tahu goreng urang awak secara keseluruhan sudah mendekati ideal konsumen, yang secara berurutan yaitu kandungan gizi. Sedangkan atribut kemasan belum memenuhi sifat ideal konsumen. Berdasarkan analisis tingkat kepentingan atribut  produk tahu goreng urang awak, diketahui bahwa atribut yang diprioritaskan oleh konsumen dalam mengkonsumsi secara berurutan adalah rasa. Hasil dari penelitian menunjukkan bahwa secara keseluruhan sikap konsumen terhadap produk tahu goreng urang awak sangat baik.
Optimization of Gambier Industry Wastewater Treatment Plant (WWTP) Performance: a Systematic Approach for Environmental Sustainability
Authors: Desfitri Erda Rahmilaila , Desmiarti Reni , Permata Adinda Ratu , Elizarni Elizarni
Published: August 2024

The gambier industry in West Sumatra, particularly in Payakumbuh, is Indonesia's largest producer of gambier, contributing approximately 80-90% of the national production. This high production rate results in increased waste generated during the production process. This article discusses the potential environmental pollution from wastewater from the gambier industry and efforts to address this issue. The study notes that coagulation-flocculation and adsorption methods have efficiently treated textile industry wastewater. The study discusses the Wastewater Treatment Plant (WWTP) conditions in the gambier processing industry before optimization and the steps taken to improve its performance. Additionally, the study analyzes wastewater characteristics before and after treatment. The results of this study indicate that adding aerators and pH-adjusting agents to the WWTP can improve wastewater treatment performance, resulting in effluent that meets the quality standards set by government regulations. Moreover, treating wastewater with adding Poly Aluminium Chloride (PAC) reduces COD and BOD, indicating the degradation of organic components in gambier waste. COD removal efficiency is 92.65%, and BOD removal efficiency is 58.01%. This optimization results in an improved quality of gambier industry wastewater, reducing its negative environmental impact. These efforts are crucial to meet environmental regulatory standards established by the Indonesian government.
Pengaruh Subtitusi Tepung Terigu Dengan Tepung Bengkuang (Pachyrizus erosus) Terhadap Karakteristik Mi Instan
Authors: Violalita Fidela , Purnama Sari Indah , Fitri Yanti Henny , Evawati  , Roza Irwan
Published: August 2024

Tepung terigu yang asalnya dari gandum merupakan salah satu bahan dasar pada pembuatan mi. Selama ini kebutuhan gandum Indonesia dipenuhi melalui impor. Pemanfaatan pangan lokal non terigu seperti bengkuang (Pachyrrhizus erosus) sebagai bahan campuran dalam pembuatan mi dapat dilakukan untuk menurunkan impor gandum. Dengan menggunakan uji sensori dan uji proksimat, akan didapat karakteristik mi instan yang disubstitusi dengan tepung bengkuang. Perlakuan dalam penelitian ini adalah penggantian tepung terigu dengan tepung bengkuang 10 %, 15 %, 20 % dan 25 %. Berdasarkan pengujian sensori yang telah dilakukan, penggantian tepung terigu dengan tepung bengkuang memberikan pengaruh nyata terhadap tekstur, aroma, warna, rasa dan kenampakan. Mi yang disubstitusi dengan tepung bengkuang sebanyak 15 % merupakan perlakuan terbaik, dengan penilaian panelis terhadap aroma 3,92 (agak suka), warna 4,76 (suka), rasa 4,04 (agak suka), tekstur 4,08 (agak suka), dan kenampakan 4,2 (agak suka). Mi yang disubstitusi dengan tepung bengkuang 15 % memiliki kadar air 8,03 %, kadar protein 16,98 %, kadar lemak 30,05 %, kadar abu 1,09 % dan kadar karbohidrat 43,84. Berdasarkan SNI 3551-2018, mi yang dihasilkan sudah memenuhi standar mutu
PROBLEMATIKA DUALISME DALAM PENYELESAIAN SENGKETA PROSES PEMILU
Authors: Uu Nurul Huda
Published: August 2024

Penelitian ini bertujuan untuk menganalisis dualisme penyelesaian sengketa dalam proses pemilu masih menjadi problem yang perlu diperbaiki. Di mana sampai saat ini terdapat dua lembaga yang dipakai untuk menyelesaikan sengketa proses pemilu dalam hal sengketa antara peserta pemilu dengan KPU, yaitu Bawaslu dan PTTUN. Sehingga dengan adanya dualisme kewenangan di antara lembaga tersebut berindikasi pada tumpang tindihnya kewenangan yang berujung pada ketidakpastian hukum. Penelitian ini menggunakan pendekatan yuridis normatif dengan mengkaji norma hukum serta efektifitas konsep dualisme Lembaga dalam penyelesian sengketa proses pemilu. Hasil dari penelitian ini menunjukan bahwa terdapat disharmonis dalam penanganan pemilu baik dari kewenangan maupun hasil putusan yang bersinggungan antara Bawaslu dan PTTUN sehinngga berdampak pada lahirnya ketidakpastian hukum. Penyelesaian sengketa proses pemilu secara dualisme tersebut dianggap tidak efektif, bahkan putusan yang dihasilkan dapat menimbulkan gangguan pada penyelenggaraan pemilu. Oleh karena itu, penyelesaian sengketa proses pemilu sebaiknya dilaksanakan sepenuhnya oleh Bawaslu.
Model Pertumbuhan Tinggi dan Diameter Eucalyptus sp.
Authors: Suhartati Tatik , Sari Atika Kumala , Wahyudiono Sugeng
Published: August 2024

Growth models can provide information on how the tree grows with age, and can be used to predict the level of timber production. This study aims to find the growth model of height (H) and diameter (Dbh) and determine the maximum volume cycle of Eucalyptus sp. in PT. XYZ. Samples were taken in various compartments with ages of 18 months, 30 months 42 months and 54 months. The total sample of 64 plots was divided into 48 plots for model development and 16 plots for model validation. The four types of models analyzed were Linear, Logarithmic, Inverse and S models. Modeling was done through regression analysis. Model acceptance criteria were significant in F test, R2 value and SeR, while model validation criteria used RMSE, SR, SA and Bias values. The best growth model in this study for both Height and Dbh was the S model with the equations Height=e^(3.0355 - 1.3525/x) and DBH=e^(2.6491 - 1.2843/x). The maximum volume cycle was achieved at the age of 4.5 years with a volume of 172.7284 m3/ha and a Mean Annual Increament (MAI) value of 38.3841 m3/ha/year.
PERAN KEPALA SEKOLAH DALAM MANAJEMEN PEMBELAJARAN BERDASARKAN KURIKULUM 2013
Authors: Sukmadewi Randia
Published: August 2024

Fokus penelitian ini meliputi; (1) peran kepala sekolah dalam perencanaan pembelajaran berdasarkan Kurikulum 2013, (2) peran kepala sekolah dalam pelaksanaan pembelajaran berdasarkan Kurikulum 2013, (3) peran kepala sekolah dalam evaluasi pembelajaran berdasarkan Kurikulum 2013. Penelitian ini menggunakan pendekatan kualitatif; rancangan studi kasus. Peneliti sebagai instrumen kunci; sumber data berasal dari kepala sekolah, waka kurikulum, guru, dan dokumntasi pendukung; teknik pengumpulan data dengan wawancara, pengamatan, dan dokumentasi. Hasil penelitian meliputi: (1) peran kepala sekolah dalam perencanaan pembelajaran berdasarkan Kurikulum 2013 yaitu mengadakan workshop, memberikan sosialisasi Kurikulum 2013 dan mengadakan rapat penyusunan program tahunan, (2) peran kepala sekolah dalam pelaksanaan pembelajaran berdasarkan kurikulum 2013 yaitu memberikan motivasi kepada guru dalam proses pembelajaran, dan memberikan arahan sesuai dengan aturan yag ada, (3) peran kepala sekolah dalam evaluasi pembelajaran berdasarkan Kurikulum 2013 yaitu evaluator dan supervisor, dimana kepala sekolah melakukan pengawasan dan pembinaan kepada guru secara terus-menerus.
UPAYA MENINGKATKAN KEMAMPUAN GURU DALAM MERANCANG INSTRUMEN PENILAIAN AFEKTIF MELALUI PELAKSANAN KEGIATAN SUPERVISI DI SD NEGERI 07 SITAPUNG KECAMATAN AMPEK ANGKEK
Authors: Arnelis
Published: August 2024

Penelitian tindakan sekolah ini berawal dari permasalahan yang dihadapi guru SD Negeri 07 Sitapung Kecamatan Ampek Angkek dalam melaksanakan  evaluasi pembelajaran. Dalam melakukan evaluasi, guru jarang menggunakan instrumen penilaian afektif. Evaluasi yang dilakukan guru hanya dengan tes dan itu pun terbatas pada penilaian domain kognitif. Sedangkan untuk menilai domain afektif guru hanya menilai dengan tugas-tugas dan pengamatan. Penilain afektif dengan cara tersebut tentunya kurang tepat, karena itu diperlukan instrumen penilaian yang tepat dan berkualitas untuk menilai aspek afektif. Tujuan penelitian ini adalah untuk meningkatkan kemampuan guru dalam pembuatan dan penggunaaan instrumen penilaian afektif.Jenis penelitian ini adalah penelitian tindakan dengan menggunakan pendekatan kualitatif. Data penelitian ini berupa informasi tentang proses dan data hasil tindakan yang diperoleh dari hasil pengamatan, hasil penilaian, diskusi dan dokumentasi. Sumber data adalah proses dan hasil pelaksanaan kegiatan supervisi di SD Negeri 07 Sitapung Kecamatan Ampek Angkek. Analisis data dilakukan dengan menggunakan model analisis data kualitatif. Berdasarkan hasil penelitian, kegiatan supervisi yang dilakukan mampu meningkatkan kemampuan guru dalam pembuatan dan penggunaan instrumen penilaian afektif. Hasil ini terlihat dari penilaian terhadap kemampuan guru yang mengalami peningkatan, yakni pada siklus I persentase nilai rata-rata yang diperoleh guru adalah 66,5% artinya kompetensi guru pada siklus ini masih berada dalam kategori cukup, sedangkan pada siklus II, persentase nilai rata-rata yang diperoleh guru mengalami peningkatan menjadi 84,5% artinya kemampuan guru dalam pembuatan dan penggunaan instrumen penilaian afektif  sudah berada dalam kategori baik. Dengan demikian dapat disimpulkan bahwa pelaksanaan kegiatan supervisi di SD Negeri 07 Sitapung Kecamatan Ampek Angkek telah berhasil meningkatkan kemampuan guru dalam pembuatan dan penggunaan instrumen penilaian afektif .
Reviewer Acknowledgements for International Journal of Business and Management, Vol. 19 No. 4
Authors: Lee Stephen
Published: August 2024

Reviewer Acknowledgements for International Journal of Business and Management, Vol. 19 No. 4, August 2024
Vocabulary in English Textbooks for Vietnamese Upper-Secondary Students: A Comparative Analysis of Reading Passages
Authors: Lien Nam Nhat ,   University of Economics Ho Chi Minh City, Mai Nhi Hoa , Trang Nguyen Huynh ,   University of Economics Ho Chi Minh City,   University of Economics Ho Chi Minh City
Published: August 2024

In EFL countries where English is rarely practiced outside the classroom, textbooks have become the major input source for learners. Particularly in Vietnam, multiple textbook series are available simultaneously for the same grade. Thus, it is important to examine if their vocabulary is appropriate and of similar difficulty. This study aims to investigate and compare the lexical demands, sophistication, diversity, and lengths of reading passages in the eight latest series for Vietnamese 10th graders with 53,360 tokens in total. The results revealed that the most frequent 1,000, 2,000-3,000, and roughly 4,000-word families in the BNC/COCA wordlist, plus proper nouns, marginal words, transparent compounds, and acronyms, were respectively needed for 85%, 95%, and 98% coverage. Additionally, pairwise comparisons uncovered that the passages differ significantly in length yet insignificantly in lexical sophistication and diversity. Therefore, the series appear to be well-suited to co-implementation and facilitative to vocabulary development despite not being optimized for independent learning. The study still calls for simplifying the eight textbook series to promote meaning-focused output. Finally, implications for exploiting and revising these textbook series are discussed.
Matches and Mismatches in Perceptions of Group Work: Voices from EFL Teachers and Students
Authors: Bui Trang Le Diem ,   An Giang University, Nguyen Hanh Thi Minh ,   An Giang University
Published: August 2024

Although group work activities are commonly employed in communicative second language (L2) classes, there are few studies that investigate how much teachers and students, the two main stakeholders, agree or differ on how group work activities should be conducted. To fill this gap, this study, which was carried out at a public university in Vietnam, examined the perceptions of both teachers and students to uncover matches and mismatches in their perceptions of important issues for effective group work implementation. The study explored the actual experiences of six teachers and ten students, who were chosen by convenience sampling. Thematic analysis of the interviews indicated that the benefits of group work were widely agreed upon, as were the preferences for group size and self-selection of group members. However, there was disagreement over ways of grouping, the role of leadership, and the use of peer assessment. The findings have significant implications for relevant stakeholders, especially in the Asian English as a foreign language (EFL) context, about what would work well and what needs to be addressed to maximize the effectiveness of group work implementation.
Rivalries and Resonances: Aesthetics and Chronotopes in the Digital Sensorium of Netflix´s Narcos and La Casa de Papel
Authors: Colón Zayas Eliseo R
Published: August 2024

This paper explores the aesthetics and chronotopes in the digital sensorium of Netflix’s Narcos and La Casa de Papel. By analyzing the points of convergence and aesthetic correspondences between these two successful Spanish-language series, this study demonstrates how narrative elements resonate with transnational audiences. Utilizing Bakhtin's concept of chronotopes, the analysis identifies the organizing centers of main plot events, such as the encounter, the road, the house, the threshold, biographical time, nature, family, and work. The paper also contextualizes the dynamics of the audiovisual streaming sector, emphasizing the role of cultural practices and textual aesthetics in understanding the connection between audiences and narrative recommendation algorithms. Through this examination, the study aims to demystify the influence of algorithmic structures on audiovisual production and reception.
Beyond Ink and Paper: the material and the symbolic in journalism
Authors: Andrade Samária Araújo de , Lopes Paulo Fernando de Carvalho
Published: August 2024

Journalism is an activity that, beyond its material tangibility, encompasses a symbolic dimension. Seeking solely material, economic or functional explanations for understanding journalism helps in assessing specific situations, but runs the risk of overlooking many others. This study contemplates the inseparability of the material and symbolic dimensions in journalism, addressing three interrelated aspects: a) the material dimension, which often favors market aspects and, in recent years, is impacted by phenomena related to digital infotechnological transformations; b) the symbolic dimension and journalism as an activity of meaning production; and c) the idea of a hegemonic model of practiced journalism. The methodology adopted is a literature review combined with empirical observation. It is concluded that definitions and practices of journalism are strained by changes of both material and symbolic orders, demanding theoretical-interpretive research that does not neglect this condition.
Understanding Technology Trends In Education: How Artificial Intelligence Helps Learning In College And Beyond
Authors: Fauzi Fauzi , Wardhani Rizky , Wibowo Guntur Arie , Cahyono Didik , Rahmi Hanifatul
Published: August 2024

Technology trends have changed the educational paradigm, especially at the tertiary level. Artificial Intelligence (AI) has emerged as a way to change the learning process with the form of games in education, this will make education in higher education experience increased efficiency and effectiveness in learning. However, a deep understanding of how artificial intelligence can improve higher learning experiences and their impact after graduation is still limited. This research aims to investigate how artificial intelligence helps learning in higher education and its impact on students' career preparation after graduation. The focus is on analysis of the implementation of AI in teaching, learning, and decision-making support in higher education institutions. The research method used is literature study and content analysis. Data was collected from scientific articles, books, as well as related research reports on the use of artificial intelligence in higher education. The data is then analyzed to identify trends, benefits, and challenges associated with applying AI in educational contexts. Research results show that the use of artificial intelligence in higher education has increased the personalization of learning, increased knowledge retention, and facilitated more timely and accurate feedback. Additionally, AI also plays an important role in helping students develop skills relevant to the future job market. The conclusion of this research is that by integrating artificial intelligence into higher education, institutions can improve the quality of learning and help students be better prepared to face the challenges of an ever-changing job market. However, challenges such as technology dependency and the need for proper training for educators and students must also be addressed so that the full potential of AI in education can be realized.
Quizzz! As A Tool For Innovative Educational Gamification In Higher Education
Authors: Handayani Fitriah , Intes Amina , Wibowo Guntur Arie , Cahyono Didik , Mardikawati Budi
Published: August 2024

Quizizz is a very useful gamification tool for use in innovative education in higher education. By using quizizz, can help and interest students in learning. In addition, by using Quizizz, can increase creativity, and can help evaluate learning easily. This research was conducted with the aim of seeing how effective the use of Quizizz is in higher education. Because in fact, the Quizizz application is a game-based application, which can involve the participation of all students in playing in class. The method used by researchers in examining Quizizz as a Tool for Gamification of Innovative Education in Higher Education is to use quantitative methods. The data obtained by the researcher was obtained from the results of the distribution of questionnaires. The distribution of the questionnaire carried out by the researcher was done online by using the Google From software. The results of the data acquisition will also be tested again using the SPSS application. From the research results, it can be known that Quizizz is very useful to be used in innovative education in higher education. Innovative education can be interpreted as a skillful, critical, and creative education. Therefore, Quizizz is very appropriate to be used as an innovative educational gamification tool in higher education, because Quizizz can present different learning materials than previous learning materials. From this research, researchers can conclude that with Quizizz, it can enable teachers to identify material that has not been mastered by students, and can measure the level of skills that have been improved by students. In addition, the use of Quizizz as gamification in universities can also train students independently to learn, such as making questions, as well as other interesting games that will be used to learn.
Transforming Economic Law in the Digital Age: Challenges and Opportunities
Authors: Atsushi Nakazawa , Huaizheng Zhang , Sandra Gachard
Published: August 2024

Research Background: The digital age has significantly changed various aspects of life, including economic law. Digital transformation creates new challenges that require adjustments in the legal framework of economics to accommodate technological innovation. These challenges include e-commerce regulation, personal data protection, cybersecurity, and digital financial transactions. Research Objectives: This study identifies and analyzes the challenges and opportunities in transforming economic law in the digital era. A key focus is updating existing regulations to address digital challenges and taking advantage of existing opportunities to strengthen economic and legal systems. Research Method: This research uses a qualitative approach with literature study methods and document analysis. Data was collected from various sources, including academic literature, government reports, and applicable regulations. The analysis was conducted by comparing and contrasting multiple views and rules related to digital economy laws in several countries. Research Results: The results show that many countries are still in the early stages of adjusting their economic and legal regulations to the development of digital technology. Some critical challenges identified were regulatory vagueness, lack of personal data protection, and cybersecurity threats. However, there are also significant opportunities, such as increased transaction efficiency, ease of global market access, and the potential for inclusive digital economy development. Research Conclusion: This study concludes that the transformation of economic law in the digital age requires a comprehensive and adaptive approach. Regulations must be updated to address challenges and take advantage of existing opportunities. Governments, regulatory agencies, and businesses must collaborate to create legal frameworks that support innovation while protecting the public interest. Effective implementation of regulations will increase public trust and strengthen the digital era's economic and legal system.
Representações de estudantes de mestrado sobre valores na prática pedagógica: uma análise com acadêmicos portugueses
Authors: Oliveira Marcus Solon Sá de , Silva Alexsandra de Santana Soares
Published: August 2024

Os docentes universitários portugueses têm sido incentivados a adotar uma postura mais reflexiva e contínua em relação à sua prática pedagógica e à formação humana de seus estudantes. Buscamos compreender as perspectivas de estudantes de mestrado sobre como ocorre a formação de valores na prática educativa. Esta investigação, de caráter qualitativo, fez uso da técnica de associação livre de palavras (TALP) com 100 estudantes de Psicologia (26), Ciências da Educação (28) e Engenharia Civil (46). Os resultados revelam, pelo núcleo central, que as representações dos estudantes sobre valores na prática docente são positivas, estabelecidas através da ética, respeito e empatia. No sistema periférico, encontramos representações negativas (insegurança, nervosismo, desmotivação) e representações positivas no 4º quadrante (amizade, solidariedade, honestidade). Concluímos que essas representações divergentes propõem aos docentes uma contínua reflexão sobre a formação dos valores em suas práticas pedagógicas, através de uma relação educativa que auxilie positivamente no processo ensino-aprendizagem.
Carta Editorial G22
Authors: Escudero Castro Héctor César ,   Instituto Politécnico Nacional, ESIA-Tecamachalco
Published: August 2024

El Patrimonio Urbano, que está determinado por la suma histórica de esa herencia construida, en donde por su naturaleza, se vislumbra una amplia y compleja mezcla de tiempos, mentalidades, circunstancias y la dinámica propia de su sociedad, desde el siglo XIX ha movido a análisis, reflexiones y formulación de múltiples y variadas teorías, teniendo como objetivo su conocimiento, comprensión y si acaso su control.
Reseña: Airbnb contra la ciudad. Reflexiones sobre la vivienda turística en zonas patrimoniales
Authors: Navarrete Escobedo David ,   Universidad de Guanajuato, Pineda Almanza Alma ,   Universidad de Guanajuato
Published: August 2024

Airbnb es un modelo de negocio de renta de propiedades entre particulares que ha tenido un gran auge en las ciudades de alta demanda turística y residencial. Él se ha instalado en un número creciente de centros históricos metropolitanos, de ciudades medias y pueblos de México y del resto del mundo. A nivel internacional la multiplicación de viviendas turísticas con esa modalidad presenta una constante: apunta particularmente a los barrios patrimoniales con viviendas y espacios públicos de gran valor arquitectónico, histórico, contextual, paisajístico y/o estético. Esos barrios son atractivos para los turistas por que son barrios “vivos” es decir aun habitados por clases medias o populares locales que le dan al sitio todo su valor de uso y patrimonial. Sin embargo la rentabilidad ofrecida por Airbnb impulsa la salida masiva del mercado de viviendas en rentas a largo plazo (con su respectiva pérdida de habitantes locales) para incorporarlas a rentas turísticas (poblaciones flotantes de visitantes de corta estancia). Igualmente, la especulación inmobiliaria no se ha hecho esperar, pues al vender las propiedades los corredores y propietarios inflan los precios bajo el argumento de que están vendiendo un negocio. Airbnb se ha vuelto contra la ciudad, o al menos contra su función primordial: un lugar para vivir.
The analgesic effect of narcotic herbal remedies
Authors: Gutowski Mateusz , Warkocz Szymon , Sulikowski Michał , Przerwa Filip , Byrski Jakub , Sagan Karol , Kotrych Katarzyna , Uzar Izabela
Published: August 2024

Pain is one of the most common symptoms that lead people to seek medical attention. In standard medical practice, a patient's well-being depends on pain relief. There is still a need for innovative approaches to pain management since, there are numerous drugs available to manage it, many of them have significant adverse effects. Narcotic herbal remedies have gained popularity in recent years (THC) as a potential treatment with minimal negative effects and analgesic impact. Other like morphine, are widely used in medicine, and are placed in the analgesic ladder of WHO. Cocaine derivatives are used in some otolaryngologist practice. This publication aims to provide an overview of the the analgesic effect of narcotic herbal treatments in a range of situations where pain management is required.
Advancements in the prevention and treatment of benign prostatic hyperplasia, with particular emphasis on fireweed (Epilobium angustifolium L.) and nettle (Urtica dioica L.). A review.
Authors: Muszalska Aleksandra
Published: August 2024

Prostate enlargement, medically termed as benign prostatic hyperplasia (BPH), is a prevalent and frequently troublesome issue affecting older men. Research suggests that over 50% of males in their 60s may encounter symptoms associated with BPH. While BPH doesn't pose an immediate threat to life, its implications on urinary function can substantially diminish a man's quality of life. The etiology of BPH involves complex hormonal and inflammatory mechanisms, leading to prostatic enlargement and obstructive symptoms. Traditional management strategies such as α -blockers and 5- α reductase inhibitors offer symptomatic relief but may be associated with adverse effects. In recent years, natural compounds have gained attention for their potential efficacy and safety profiles in managing prostate enlargement. This article reviews recent advancements in the prevention and treatment of BPH, with a particular emphasis on the utilization of herbal remedies, namely fireweed (Epilobium angustifolium L.) and nettle (Urtica dioica L.). The research for this review was conducted using databases PubMed, Scopus, and Google Scholar to gather relevant studies and findings.