bluuebunny/crossref_metadata_2025 huggingface dataset:
Efficacy of a long-pulsed 1064-nm Nd:YAG laser in acute scar redness
Authors: Choi Youngwoong , Ji Jeong Min , Sung Ki Pyo , Kim Choong Hyeon
Published: July 2023

Background The initial redness of the scar on a postoperative suture site is a natural phenomenon that fades over time. However, with a long period of redness, patients complain about cosmetic discomfort, and the possibility of pigmentation changes is induced. We investigated the use of a long-pulsed 1064 nm Nd:YAG laser as a noninvasive treatment for improving the redness of these scars.Methods A retrospective chart review was conducted on 36 patients who underwent excision of a nevus on the face. Fourteen patients received laser treatment and another 22 patients used only scar management ointment. Patients were followed up 1 week after the sutures were removed. The photographic images taken at the time of suture removal and 2 months later were reviewed. The evaluation was performed on a 7-point scale by adding the Japan Scar Workshop (JSW) scar scale’s redness and erythema scores.Results The average initial JSW scar scale score of the treatment group was 4.6, and that of the nontreatment group was 4.2. When the re-evaluation was performed 2 months later, the score of the treatment group decreased to 2.2 and that of the nontreatment group decreased to 3.1. The difference in the JSW scar scale between the treatment group and the nontreatment group according to laser performance was statistically significant (P=0.03).Conclusions The treatment method with a long-pulsed 1064 nm Nd:YAG laser that is less invasive and has a quick effect can be a good alternative for improving this initial scar redness.
Pamięć, pamiętanie, zapominanie dzieciństwa w Trzy po trzy Aleksandra Fredry
Authors: Dąbrowska Alicja
Published: July 2023

Dzieciństwo i młodość są ważnym tematem w pamiętniku z epoki napoleońskiej. W artykule zamierzam zrekonstruować specyfikę i zanalizować pamięć obrazów dzieciństwa w jego najistotniejszych fazach granicznych w Trzy po trzy. Celem jest omówienie tego stanowiącego sumę gatunków (gawęda, pamiętnik, i in.) tekstu, deszyfrujące, jak autor uruchamia pamiętanie i zapominanie. Jak uruchamia on kategorię „pamięć wertykalna” (Proust), dającą gwarancję prawdziwości wspomnienia, wydobywającego się z wnętrza wspominającego, dla którego „niematerialne” zmysły woni, wzroku, słuchu pozwalają pamięci przez asocjację czuciową „odpominać” to, co istotne z dzieciństwa.
Global existence, scattering, rigidity and inverse scattering for some quasilinear hyperbolic systems
Authors: Zha Dongbing , Xue Xinxin , Sun Minghui
Published: July 2023

We study the Cauchy problem of multidimensional quasilinear hyperbolic systems of diagonal form without self-interaction. In both

L
1

{L^{1}}

and

L
∞

{L^{\infty}}

frameworks,
we will first show the global existence of classical solutions with small initial data, and then prove that the global solution will scatter to free linear waves and study the rigidity aspect of the scattering problem. We also show the inverse scattering result: The scattering field can determine the global solution uniquely, in the

L
1

{L^{1}}

framework.
Expanding the frontiers of camera-trapping in Colombia: application of the “Mostela” system to gain knowledge on small non-volant mammals from an Andean cloud forest
Authors: Cepeda-Duque Juan C. , Arango-Correa Eduven , Andrade-Ponce Gabriel P. , Mazariegos Luis , Hofmeester Tim R. , Ramírez-Chaves Héctor E.
Published: July 2023

Recently, the Mostela system emerged as an expansion of camera trapping to gain new insights into the assemblages of small-sized and cryptic mammals. Despite being an established technique to study the natural history and ecology of rodents, shrews and small carnivores in Europe, its potential in tropical areas remains unexplored. We present the results of a pilot hybrid survey with conventional trail cameras and Mostelas conducted in a private protected area situated in the Cordillera Occidental of Colombia. We installed eight Mostelas paired with an external trail camera 550 m apart from each other from May to October 2022 in the Mesenia-Paramillo Nature Reserve. The Mostelas recorded two species of small carnivores, the threatened and unknown Colombian weasel (Neogale felipei), and the Long-tailed weasel (Neogale frenata), including several small rodents and marsupials. Mostelas captured a larger proportion of small non-volant mammals that could at least be identified to genus level compared to conventional trail cameras. We found that using baits inside Mostelas yielded a greater number of detections and richness compared to surveys not using them. Finally, we encourage the use of this hybrid system to improve the monitoring of poorly known small non-volant mammals in the Andean cloud forests.
Effect of vibration and cutting zone temperature on surface topography during hybrid cooling/lubrication assisted machining of Vanadis 10
Authors: Özbek Onur , Altan Özbek Nursel , Kara Fuat , Saruhan Hamit
Published: July 2023

New alloy materials developed to meet the increasing technological needs of people come into our lives with some difficulties in terms of machinability. New cooling and lubrication techniques have been developed to facilitate the workability of such difficult-to-process materials and protect the world ecologically and the quality of the produced product. The workpiece used in this study, Vanadis 10 SuperClean, is a high vanadium alloyed powder metallurgy tool steel offering a unique combination of excellent abrasive wear resistance in combination with a good chipping resistance. The present study investigated the effects of dry, cryo, and CryoMQL cutting conditions on cutting tool vibration amplitude, cutting temperature, surface roughness, tool wear, and tool life in turning of Vanadis 10 tool steel used in the automotive industry. The experiments were performed using TiCN/Al2O3/TiN coated cemented carbide tools and cutting parameters as the constant depth of cut (1 mm), feed rates (0.08, 0.1, 0.12 mm rev−1), and cutting speeds (80, 100, 120 m min−1). The results obtained from experiments showed that spraying liquid nitrogen into the cutting zone provided significant improvements on cutting temperature, tool wear, cutting tool vibration amplitude, and surface roughness. The best results in terms of all output were achieved in the CryoMQL cutting environment. CryoMQL environment has reduced surface roughness up to 65.03 %, flank wear 56.99 %, cutting temperature 32.77 %, and cutting tool vibration amplitude up to 42.76 % compared to dry machining.
Modelling boron diffusion for Fe2B layer formation: comparative kinetics analysis in pack-boronized AISI 4147 steel
Authors: Ortiz-Domínguez Martin , Keddam Mourad
Published: July 2023

In this current research paper, the modelling of boron diffusion during the powder-pack boronizing was achieved by utilizing two kinetics approaches: the integral method and average diffusion coefficient (ADC) method. This integral method used a general solution of algebraic differential equations (DAEs) system. The powders mixture composed of: 33.5 wt% B4C, 5.4 wt% KBF4 and 61.1 wt% SiC was employed to generate the Fe2B layers on AISI 4147 steel in the interval of 1123–1273 K for 2–8 h. The obtained surface layers have been characterized by Scanning electron microscopy (SEM) to examine the growth front with a typical saw-toothed morphology. The crystalline nature of boride phase has been verified by X-ray diffraction technique (XRD). The calculation results arising from the two models led to the similar boron activation energy in Fe2B equal to 196.19 kJ mol−1. Additionally, both models were checked out empirically by selecting three extra boronizing conditions obtained at 1273 K for increasing times (2.5, 4.5 and 8.5 h). The predicted layers’ thicknesses were found to be in line with the experimental results.
Barriers to Preservation for Digital Information Resources in University Libraries of Pakistan
Authors: Ahmad Rafiq , Rafiq Muhammad , Arif Muhammad
Published: July 2023

The purpose of this study was to investigate barriers faced by Pakistani university libraries to implement digital preservation programs. A questionnaire was developed and pilot tested before being sent to 70 libraries of the public sector universities and degree awarding institutions to measure the phenomena. Out of the targeted 70 libraries, 63 responded to the survey (90 % response rate). The results highlighted that a lack of institutional/national policies, financial and technological resources, and administrative support are key barriers that hinder the implementation of digital preservation practices in Pakistani university libraries. The findings of this novel study emphasize devising a national policy for digital preservation in Pakistan. Results point out key barriers to digital preservation and help designing knowledge-based systems in order to meet information and knowledge needs of library users around the clock.
A critical analysis of turbulence modulation in particulate flow systems: a review of the experimental studies
Authors: Hoque Mohammad Mainul , Joshi Jyeshtharaj B. , Evans Geoffrey M. , Mitra Subhasish
Published: July 2023

In multiphase particulate systems, the turbulence of the continuous phase (gas or liquid) is modulated due to interactions between the continuous phase and the suspended particles. Such phenomena are non-trivial in the essence that addition of a dispersed phase to a turbulent flow complicates the existing flow patterns depending on the physical properties of the particles leading to either augmentation or attenuation of continuous phase turbulence. In the present study, this aspect has been comprehensively analysed based on the available experimental data obtained from the well-studied turbulent flow systems such as channel and pipes, free jets and grids. Relevant non-dimensional parameters such as particle diameter to integral length scale ratio, Stokes number, particle volume fraction, particle momentum number, and particle Reynolds number have been utilised to characterise the reported turbulence modulation behavior. Some limitations of these commonly used dimensionless parameters to characterise turbulence modulation are discussed, and possible improvements are suggested.
Structural and optical analysis of nanostructural CuCrO3 perovskite by sol–gel method
Authors: Batool Kiran , Rani Malika , Shafique Rubia , Neffati Riadh , Akram Mariam , Arshad Maryam
Published: July 2023

CuCrO3 perovskite structure synthesized via cost-effective sol–gel method successfully as confirmed by X-ray diffraction (XRD) with smaller crystallite size has been reported. EDS confirmed copper chromite perovskite single phase with no extra impurity peak existence. Agglomerated grains resulting average particle size of 9.6 nm as determined from SEM micrographs. PL spectra shows electron transition from VB to CB whereas Raman spectra shows D and G band presence within spectra pointing towards existence of functional groups within structure. Bandgap value of 4.02 eV is calculated from UV–vis spectra. In order to calculate Eu, which is calculated to be 0.960 Ev. All these properties suggested synthesized material applicability as an optoelectronic perovskite material.
Boosting Serotonin Increases Information Gathering by Reducing Subjective Cognitive Costs
Authors: Michely Jochen , Martin Ingrid M. , Dolan Raymond J. , Hauser Tobias U.
Published: July 2023

Serotonin is implicated in the valuation of aversive costs, such as delay or physical effort. However, its role in governing sensitivity to cognitive effort, for example, deliberation costs during information gathering, is unclear. We show that treatment with a serotonergic antidepressant in healthy human individuals of either sex enhances a willingness to gather information when trying to maximize reward. Using computational modeling, we show this arises from a diminished sensitivity to subjective deliberation costs during the sampling process. This result is consistent with the notion that serotonin alleviates sensitivity to aversive costs in a domain-general fashion, with implications for its potential contribution to a positive impact on motivational deficits in psychiatric disorders.

SIGNIFICANCE STATEMENTGathering information about the world is essential for successfully navigating it. However, sampling information is costly, and we need to balance between gathering too little and too much information. The neurocomputational mechanisms underlying this arbitration between a putative gain, such as reward, and the associated costs, such as allocation of cognitive resources, remain unclear. In this study, we show that week-long daily treatment with a serotonergic antidepressant enhances a willingness to gather information when trying to maximize reward. Computational modeling indicates this arises from a reduced perception of aversive costs, rendering information gathering less cognitively effortful. This finding points to a candidate mechanism by which serotonergic treatment might help alleviate motivational deficits in a range of mental illnesses.
RNF26 binds perinuclear vimentin filaments to integrate ER and endolysosomal responses to proteotoxic stress
Authors: Cremer Tom , Voortman Lenard M , Bos Erik , Jongsma Marlieke LM , ter Haar Laurens R , Akkermans Jimmy JLL , Talavera Ormeño Cami MP , Wijdeven Ruud HM , de Vries Jelle , Kim Robbert Q , Janssen George MC , van Veelen Peter A , Koning Roman I , Neefjes Jacques , Berlin Ilana
Published: July 2023

Proteotoxic stress causes profound endoplasmic reticulum (ER) membrane remodeling into a perinuclear quality control compartment (ERQC) for the degradation of misfolded proteins. Subsequent return to homeostasis involves clearance of the ERQC by endolysosomes. However, the factors that control perinuclear ER integrity and dynamics remain unclear. Here, we identify vimentin intermediate filaments as perinuclear anchors for the ER and endolysosomes. We show that perinuclear vimentin filaments engage the ER‐embedded RING finger protein 26 (RNF26) at the C‐terminus of its RING domain. This restricts RNF26 to perinuclear ER subdomains and enables the corresponding spatial retention of endolysosomes through RNF26‐mediated membrane contact sites (MCS). We find that both RNF26 and vimentin are required for the perinuclear coalescence of the ERQC and its juxtaposition with proteolytic compartments, which facilitates efficient recovery from ER stress via the Sec62‐mediated ER‐phagy pathway. Collectively, our findings reveal a scaffolding mechanism that underpins the spatiotemporal integration of organelles during cellular proteostasis.
Targeting CD301+ macrophages inhibits endometrial fibrosis and improves pregnancy outcome
Authors: Lv Haining , Sun Haixiang , Wang Limin , Yao Simin , Liu Dan , Zhang Xiwen , Pei Zhongrui , Zhou Jianjun , Wang Huiyan , Dai Jianwu , Yan Guijun , Ding Lijun , Wang Zhiyin , Cao Chenrui , Zhao Guangfeng , Hu Yali
Published: July 2023

Macrophages are a key and heterogeneous cell population involved in endometrial repair and regeneration during the menstrual cycle, but their role in the development of intrauterine adhesion (IUA) and sequential endometrial fibrosis remains unclear. Here, we reported that CD301+ macrophages were significantly increased and showed their most active interaction with profibrotic cells in the endometria of IUA patients compared with the normal endometria by single‐cell RNA sequencing, bulk RNA sequencing, and experimental verification. Increasing CD301+ macrophages promoted the differentiation of endometrial stromal cells into myofibroblasts and resulted in extracellular matrix accumulation, which destroyed the physiological architecture of endometrial tissue, drove endometrial fibrosis, and ultimately led to female infertility or adverse pregnancy outcomes. Mechanistically, CD301+ macrophages secreted GAS6 to activate the AXL/NF‐κB pathway, upregulating the profibrotic protein synthesis. Targeted deletion of CD301+ macrophages or inhibition of AXL by Bemcentinib blunted the pathology and improved the outcomes of pregnancy in mice, supporting the therapeutic potential of targeting CD301+ macrophages for treating endometrial fibrosis.
ASEAN’s Role in Protecting Migrant Workers’ Rights During the Covid-19 Pandemic
Authors: Bangun Budi Hermawan
Published: July 2023

This paper focuses on ASEAN’s efforts as a regional organization to protect the rights of migrant workers in the Covid-19 pandemic situation. The protection of the rights of migrant workers is part of the protection of human rights regulated in various international legal instruments as well as within the ASEAN framework, especially in the ASEAN Consensus on the Promotion and Protection of the Rights of Migrant Workers (ACPPRMW). Although responding quickly to the impact of the Covid-19 pandemic on the economic and health sectors, ASEAN’s response and efforts in protecting the rights of migrant workers during the Covid-19 pandemic were late and ineffective. This is also an illustration of the ineffective implementation of the system and mechanism for the protection of migrant workers in ASEAN as well as the implementation of other ASEAN human rights legal instruments, due to the main principle that is firmly held by ASEAN, namely the non-interference principle.
Who Should Regulate The Industry of Financial Technology?
Authors: Johan Suwinto , Sugiarto Sugiarto
Published: July 2023

Financial technology (fintech) has outgrown its capacity. Industry supervision and consumer protection have become a challenge. Until now, the Indonesian Financial Services Authority (OJK) has been considered responsible for supervising the financial technology industry. The purpose of this research is to determine whether the Indonesian Financial Services Authority is capable of leading the fintech industry and whether a separate agency to oversee the fintech industry is necessary. This study employs a normative juridical methodology. This study examines the entire financial industry. According to this research, the Indonesian Financial Services Authority lacks the authority to regulate the fintech industry. The government should enact special legislation and regulations to govern the fintech industry. The regulator must consider creating a separate agency to supervise the fintech industry, similar to the Indonesian Financial Services Authority. This particular agency is comprised of individuals with ties to the financial sector, the telecommunications industry, and other law enforcement personnel.
Application of The Juridic-Scientific Religious Approach Model in Execution of Penal Law Enforcement
Authors: Widyawati Anis , Latifiani Dian , Fibrianti Nurul , Arifin Ridwan , Rohmat Rohmat
Published: July 2023

Reforming the criminal application legislation in the national legal system is critical. This research uses the paradigm of legal constructivism and the type of research used is juridical-sociological. Criminal law enforcement regulations are currently still scattered in various laws and regulations, it is not impossible that they will disrupt the law enforcement system, especially in the implementation of criminal decisions/actions. Character building is an effort to establish a conservation value system to achieve the value of justice, the value of certainty and the value of benefit in law enforcement for the implementation of criminal law. Therefore, efforts are needed to enforce the law on the implementation of criminal law through a juridical-scientific-religious approach that is oriented (guided) on “science” (criminal implementation law) and “God’s guidance”. The juridical-scientific religious approach is realized as a concrete effort to reform the law through reforming the substance and culture of the law. In reforming the legal substance, the religious approach is carried out by making religious teachings a source of motivation, inspiration, and creative evaluation source in building legal people with noble character, so that concrete efforts must be developed in the content of national legal development policies.
Application for Second Marriage Dispensation And its Relevance to Child Protection (Study In The Jurisdiction Of Wonosobo Religious Court)
Authors: Amania Nila , Yusriyadi Yusriyadi , Yunanto Yunanto
Published: July 2023

This study aims to find out why there is still a request for a second dispensation and how the second marriage dispensation is implemented in terms of the principle of child protection. This research is an example of empirical juridical research, which is research done in the field by looking at the laws that are in place and how they are used in people’s lives. The study’s results show that different ways of interpreting the rules in Article 7 paragraph 1 of Law 16/2019 have led to several KUA in Wonosobo still requiring prospective brides under the age of 19 to submit a second marriage dispensation, even though they are already widowed or widowers. According to the rules, a dispensation for marriage only needs to be filed once. This is because a person is considered legally competent after getting married. On the other hand, when considering the principle of child protection, filing for a second dispensation for marriage is required. This study was made so that the Religious Courts and KUA, as well as anyone else who was interested, could use it as a guide to understand how important it is to have the same ideas about applying for a second marriage dispensation.
Legal Protection of Consumer Personal Data in Indonesia Fintech Peer-To-Peer Lending Pioneers
Authors: Fiorentina Prita , Sulistianingsih Dewi , Niravita Aprila , Ningsih Ayup Suran
Published: July 2023

The development of the Financial Technology Industry, especially Peer-to-Peer Lending in Indonesia, brings various conveniences as well as risks. With multiple platforms providing Peer-to-Peer Lending services, it also has an impact on the amount of personal data collected by each platform. This can pose a threat related to consumer personal data, such as cases that have recently emerged. Some Peer-to-Peer Lending platforms abuse their customer’s personal data by spreading it to other parties. Things that should not be done considering the loan agreement that has been agreed between the borrower and the Peer-to-Peer Lending platform regarding personal data that must be safeguarded and if urgently requires this data must be approved by the borrower. This research will discuss the legal protection regulations for the personal data of Peer-to-Peer Lending consumers and discuss the policies implemented by one of the pioneers of Peer-to-Peer Lending in Indonesia regarding the importance of protecting consumer personal data. This research is empirical legal research that uses interviews as a source of data. This study used a qualitative approach to collect primary and secondary data. This research will discuss the current legal regulations related to the protection of personal data including the existence of the Personal Data Protection Law and discuss the policy and implementation of Peer-to-Peer Lending pioneers in Indonesia regarding the protection of borrowers’ personal data.
Inhibition of mitochondrial fission and protein kinase R improves progesterone in placental stress
Authors: Kolac Umut Kerem
Published: July 2023

Placenta synthesizes hormones that play a vital role in adapting maternal physiology and supporting fetal growth. This study aimed to explore the link between progesterone, a key steroid hormone produced by placenta, and mitochondrial fission and protein kinase R through the use of chemical inhibition in trophoblasts subjected to endotoxin lipopolysaccharide and double-stranded RNA analog polyinosinic:polycytidylic acid stress. Expressions of protein kinase R, dynamin-related protein 1, mitochondrial fission protein 1, and heat shock protein 60 were determined by applying lipopolysaccharide and polyinosinic:polycytidylic acid to BeWo trophoblast cells. Next, cells were treated with protein kinase R inhibitor 2-aminopurine and mitochondrial division inhibitor 1 to examine changes in progesterone levels and expression levels of proteins and mRNAs involved in progesterone biosynthesis. Last, effect of 2-aminopurine on mitochondrial fission was determined by immunoblotting and quantitative PCR (qPCR). Mitochondrial structural changes were also examined by transmission electron microscopy. Lipopolysaccharide and polyinosinic:polycytidylic acid stimulation induced mitochondrial fission and activated protein kinase R but decreased heat shock protein 60 levels and progesterone synthesis. Chemical inhibition of mitochondrial fission elevated progesterone synthesis and protein and mRNA levels of genes involved in progesterone biosynthesis. Inhibition of protein kinase R with 2-aminopurine prevented lipopolysaccharide and polyinosinic:polycytidylic acid induced mitochondrial fission and increased progesterone biosynthesis. Use of chemical inhibitors to treat placental stress caused by pathogens has potential to stabilize the production of progesterone. The study reveals that inhibiting mitochondrial fragmentation and reducing activity of stress kinase protein kinase R in syncytiotrophoblasts leads to an increase in progesterone synthesis when exposed to lipopolysaccharide and polyinosinic:polycytidylic acid.
Metabolic regulation of glucagon secretion
Authors: Armour Sarah L , Stanley Jade E , Cantley James , Dean E Danielle , Knudsen Jakob G
Published: July 2023

Since the discovery of glucagon 100 years ago, the hormone and the pancreatic islet alpha cells that produce it have remained enigmatic relative to insulin-producing beta cells. Canonically, alpha cells have been described in the context of glucagon’s role in glucose metabolism in liver, with glucose as the primary nutrient signal regulating alpha cell function. However, current data reveal a more holistic model of metabolic signalling, involving glucagon-regulated metabolism of multiple nutrients by the liver and other tissues, including amino acids and lipids, providing reciprocal feedback to regulate glucagon secretion and even alpha cell mass. Here we describe how various nutrients are sensed, transported and metabolised in alpha cells, providing an integrative model for the metabolic regulation of glucagon secretion and action. Importantly, we discuss where these nutrient-sensing pathways intersect to regulate alpha cell function and highlight key areas for future research.
AAP Pediatric Coding Newsletter
™ August 2023 Quiz (Online Exclusive)
Authors:   American Academy of Pediatrics
Published: July 2023

Quiz for AAPC Continuing Education Units
Penetuan dosis pupuk nitrogen, fosfor, dan kalium optimum untuk padi sawah varietas bioemas agritan
Authors: Astuti Yati , Lubis Iskandar , Junaedi Ahmad
Published: July 2023

Fertilizer requirements for each rice variety are different from other varieties. Research on the optimum dosage of fertilization on new superior varieties is needed to obtain optimum growth and yield. This study aims to determine the optimum dosage of N, P, and K fertilizer for the growth and productivity of lowland rice of the Bioemas Agritan variety. The research was conducted at Banten Assessment Institute for Agricultural Technology, from February 2022 to June 2022 on soils with very low C-organic and total N conditions. The study consisted of three parallel experiments, namely the N, and P, K fertilization experiment using a single factor randomized  complete block design which was repeated three times. Fertilizer dosages consist of five levels, namely 0, 50, 100, 150, and 200% of the reference dosage. Determination of the optimum dosage based on the maximum value of the relative yield quadratic equation. The optimum fertilizer dosage for the lowland rice variety Bioemas Agritan is 140,93% of the reference dosage or equivalent to 422,79 kg ha-1 urea, while the optimum dosage of P2O5 and K2O fertilizer cannot be determined.ABSTRAK Kebutuhan pupuk setiap varietas padi berbeda antara varietas satu dengan varietas lainnya. Penelitian dosis optimum pemupukan pada varietas unggul baru diperlukan untuk mendapatkan pertumbuhan dan hasil yang optimum. Penelitian ini bertujuan untuk menentukan dosis optimum pupuk N, P, K untuk pertumbuhan dan produktivitas padi sawah varietas Bioemas Agritan. Penelitian dilaksanakan di BPTP Banten, pada bulan Februari 2022 sampai dengan Juni 2022 pada tanah dengan kondisi C-organik dan N total sangat rendah. Penelitian terdiri atas tiga percobaan paralel yaitu percobaan pemupukan N, P, K menggunakan rancangan kelompok lengkap teracak faktor tunggal yang diulang sebanyak tiga kali. Dosis pupuk terdiri atas lima taraf yaitu 0, 50, 100, 150, dan 200 % dari dosis acuan. Penentuan dosis optimum berdasarkan nilai maksimum dari persamaan kuadratik hasil relatif. Dosis pupuk optimum untuk padi sawah varietas Bioemas Agritan adalah 140,93% dari dosis acuan atau setara dengan 422,79 kg ha-1 urea, sedangkan dosis optimum pupuk P2O5 dan K2Otidak dapat ditentukan.
Efektivitas ekstrak N-Heksana daun tembelekan (Lantana camara L.) dan mimba (Azadirachta indica A. Juss) terhadap mortalitas keong mas (Pomacea canaliculate L.)
Authors: Mirna Mirna , Baharuddin Maswati , Zahra Ummi , Sappewali Sappewali
Published: July 2023

Golden snail is one of the potential pests for agricultural failure in Indonesia. One of the methods used to control golden snail pests is the use of botanical pesticides. The purpose of this study was to determine the potential of L. Camara and A. Indica extracts as botanical pesticides to control the golden snail. The stages of research activities consisted of : extractionusing the maceration method; phytochemical screening; application of N-Hexane extract from tembelekan leaves and neem leaves; Observation of the golden snail mortality. The experimental method used was a completely randomized design (CRD) with nine treatments and three replications. Observations were made every 6 hours for 48 hours. Analysis of mortality data using ANOVA and DMRT follow-up test. The results showed that the secondary metabolite compounds from tembelekan and neem extracts that act as botanical pesticides are flavonoids, alkaloids, and triterpenoids. The most effective treatment in controlling the golden snail was the E3 treatment with a combination of 15% tembelekan n-hexane extract and 15% neem n-hexane extract achieving a 100% mortality percentage at 36 hours. Based on the analysis, it is known that the treatment of tembelekan and neem leaf extracts had a significant effect on golden snail mortality with Fcount (3.22) > Ftable (2.51).ABSTRAK Keong mas merupakan salah satu hama potensial terhadap kegagalan pertanian di Indonesia. Salah satu cara yang digunakan untuk mengendalikan hama keong mas yaitu menggunakan pestisida nabati. Tujuan penelitian ini adalah untuk mengetahui potensi ekstrak L. Camara dan A. Indica sebagai pestisida nabati untuk mengendalikan keong mas. Tahapan kegiatan penelitian terdiri dari: esktraksi dengan metode maserasi; skrining fitokimia; pengaplikasian ekstrak N-Heksana daun tembelekan dan daun mimba; pengamatan mortalitas keong mas. Metode eksperimen dengan rancangan percobaan yang digunakan yaitu Rancangan Acak Lengkap (RAL) dengan sembilan perlakuan dan tiga ulangan. Pengamatan dilakukan setiap 6 jam selama 48 jam. Analisis data mortalitas dengan menggunakan ANOVA dan uji lanjut DMRT. Hasil penelitian menunjukkan bahwa golongan senyawa metabolit sekunder dari ekstrak tembelekan dan mimba yang berperan sebagai pestisida nabati yaitu flavonoid, alkaloid, dan triterpenoid. Perlakuan yang paling efektif dalam mengendalikan keong mas yaitu pada perlakuan E3 dengan kombinasi ekstrak n-heksana tembelekan 15% dan ekstrak n-heksana mimba 15%. Berdasarkan analisisnya, diketahui bahwa perlakuan ekstrak daun tembelekan dan mimba tersebut memiliki pengaruh nyata terhadap mortalitas keong mas dengan Fhitung (3,22)>Ftabel (2,51).
Kandungan asam p-Hidroksibenzoat dan p-Kumarat akar padi varietas inpara dan pengaruhnya terhadap pertumbuhan Echinochloa crus-galli
Authors: Sujinah Sujinah , Margaret Swisci , Rumanti Indrastuti Apri , Agustiani Nurwulan
Published: July 2023

Compounds of p-hidroksibenzoic and p-coumaric acids are allelochemicals produced by plants and can be phytotoxic to other plants. Allelochemicals can be used as bioherbicides in weed control. The objective of this research was to determine the content of p-hydroxybenzoic and p-coumaric in rice roots, and their effect on the growth of barnyard grass (Echinochloa crus-galli). Analysis of the content of p-hydroxybenzoic and p-coumaric compunds was carried out using HPLC. The experiment on E. crus-galli growth consisted of two phases using a completely randomized design with three replications. The first phase was testing of compounds with various concentrations (100, 300, 500, 700 ppm), and the second phase was testing of rice root extracts 0.5 g ml-1 on several Inpara varieties. The result showed that the highest content of p-hydroxybenzoic and p-coumaric acids was found in Inpara 9, and the lowest was in Inpara 6. The greatest inhibition of E. crus-galli growth (shoot and root length, dry weight) was observed at 700 ppm concentration. Rice root extracts inhibit the growth of E. crus-galli with varying degrees. Inpara 3, 4, 7, 8, and 10 had the ability to suppress E. crus-galli growth higher than the average of 10 Inpara varieties used.ABSTRAK Senyawa asam p-hidroksibenzoat dan p-kumarat merupakan alelokimia yang diproduksi oleh tanaman dan dapat bersifat fitotoksik terhadap tanaman lain. Alelokimia dapat dimanfaatkan sebagai bioherbisida dalam pengendalian gulma. Penelitian ini bertujuan untuk mengetahui kandungan p-hidroksibenzoat dan p-kumarat pada akar padi, serta pengaruhnya terhadap pertumbuhan jajagoan (Echinochloa crus-galli). Analisis kandungan senyawa p-hidroksibenzoat dan p-kumarat dilakukan dengan menggunakan HPLC. Pengujian terhadap pertumbuhan E. crus-galli terdiri dari dua tahap dengan menggunakan Rancangan Acak Lengkap tiga ulangan. Tahap pertama adalah pengujian senyawa dengan berbagai konsentrasi (100, 300, 500, 700 ppm) dan tahap kedua adalah pengujian ekstrak akar padi dengan konsentrasi 0,5 g ml-1 pada beberapa varietas Inpara. Hasil penelitian menunjukkan bahwa kandungan asam p-hidroksibenzoat dan p-kumarat tertinggi terdapat pada Inpara 9, dan yang terkecil pada Inpara 6. Penghambatan pertumbuhan E. crus-galli (panjang tajuk, akar, dan berat kering) terbesar pada konsentrasi 700 ppm. Ekstrak akar padi mampu menghambat pertumbuhan E. crus-galli dengan tingkat penghambatan yang bervariasi. Inpara 3, 4, 7, 8, dan 10 memiliki kemampuan menekan pertumbuhan E. crus-galli lebih tinggi dari rata-rata 10 varietas yang digunakan.
Effects of soil ameliorant composition on soil properties and chili (Capsicum annuum L.) yield in inceptisols Jatinangor
Authors: Haryantini Baiq Azizah , Situmorang Yosef , Nurbaity Anne , Simarmata Tualar
Published: July 2023

Inorganic fertilizers have an important role in improving the productivity of chili plants, but continuous use will cause soil quality to decline. The use of ameliorant is expected to improve soil quality. This experiment was aimed to find out the best effect of ameliorant composition and dose on organic-C, soil pH, population of phosphate solubilizing bacteria, and yield of chili plant in Inceptisols Jatinangor. The research was conducted in plastic house of Agricultural Faculty of Padjadjaran University on January – Mei 2018. The design experiment was factorial randomizedblock design which consisted of two factors with three replications. The first factor was ameliorant composition consisting of four levels (a1 = 80% cow manure + 20% Biochar Coconut Shell ; a2 = 95% Composition a1 + 5% Dolomite and Guano ; a3 = 90% Composition a1 + 10% dolomite and guano; a4 = 85% composition a1 + 15% dolomite and guano), and the second factor was ameliorant dose consisting of four levels (t0 = 0 t ha-1 ; t1 = 2 t ha-1 ; t2 = 4 t ha-1 ; t3= 6 t ha-1). The results showed that there were no interaction between composition and dose of ameliorant to organic-C, soil pH, population of phosphate solubilizing bacteria, and yield of chili on Inceptisols Jatinangor. The 4 t ha-1 of ameliorant dose increased organic-C, soil pH, population of phosphate solubilizing bacteria, and yield of chili plant by 44,9%.ABSTRAK Pupuk anorganik meningkatkan produktivitas tanaman cabai, namun penggunaan terus menerus akan menyebabkan kualitas tanah menurun. Penggunaan amelioran diharapkan dapat memperbaiki kualitas tanah. Penelitian ini bertujuan untuk mengetahui pengaruh komposisi dan dosis amelioran terbaik terhadap C organik, pH tanah, populasi bakteri pelarut fosfat, dan hasil tanaman cabai di Inceptisols Jatinangor. Penelitian dilakukan di rumah plastik Fakultas Pertanian Universitas Padjadjaran bulan Januari – Mei 2018 menggunakan rancangan acak kelompok faktorial terdiri dari dua faktor dengan tiga ulangan. Faktor pertama adalah komposisi amelioran yang terdiri dari empat taraf (a1 = 80% kotoran sapi + 20% biochar batok kelapa; a2 = 95% komposisi a1 + 5% dolomit dan guano; a3 = 90% komposisi a1 + 10% dolomit dan guano; a4 = 85% komposisi a1 + 15% dolomit dan guano), dan faktor kedua adalah dosis amelioran yang terdiri dari empat taraf (t0 = 0 t ha-1 ; t1 = 2 t ha-1 ; t2 = 4 t ha-1 ; t3= 6 t ha-1). Hasil penelitian menunjukkan bahwa tidak terdapat interaksi antara komposisi dan dosis amelioran terhadap C-organik, pH tanah, populasi BPF, dan hasil cabai pada Inceptisols Jatinangor. Dosis amelioran 4 t ha-1 meningkatkan C-organik, pH tanah, populasi BPF, dan meningkatkan hasil tanaman cabai sebesar 44,9%.
Sebaran potensi kandungan zinc galur-galur padi biofortifikasi berdasarkan warna beras pecah kulit
Authors: Rohaeni Wage Ratna , Susanto Untung , Suwarno Willy Bayuardi , Trikoesoemaningtyas Trikoesoemaningtyas , Ghulamahdi Munif , Aswidinnoor Hajrial
Published: July 2023

Zinc (Zn) is an essential micronutrient that is very useful for plants as well as humans. Breeding high zinc rice varieties and pigmented varieties will increase the added nutritional value of the rice consumed. Knowing the distribution of zinc content based on pigmented rice is necessary to see the opportunities for obtaining pigmented rice lines with high zinc. This study aimed to determine the potential distribution of zinc based on the pigment of brown rice. The research was carried out at the Breeding Laboratory of the Indonesian Center for Rice Research from February to July 2022. A total of 970 lines derived from various biparental crosses and 10 varieties were used as research material. The samples were brown rice from a field research plot arranged in an augmented design with 5 blocks. Analysis of zinc content used the X-ray Fluorescence method using the XRF Machine Supreme8000. The results showed that there was a significant difference in Zn content based on CPC color. White rice had the widest range of zinc content compared to brown and black rice. The maximum zinc content found in white rice was 55.82 mg kg-1 and the maximum yield potential was 138.29 g per hill. The black rice genotypes in all categories had a zinc content exceeding the Inpari IR Nutri Zinc potency. Black rice type C was the one with the widest variety. Types of black rice with high zinc content and high yield potential are Black B and Black E types. ABSTRAKZinc (Zn) merupakan mikronutrisi esensial untuk tanaman dan juga manusia. Perakitan varietas  padi zinc tinggi pada beras-beras berwarna akan meningkatkan nilai tambah gizi beras yang dikonsumsi. Keragaman kandungan zinc berdasarkan warna beras perlu diketahui untuk melihat peluang diperolehnya varietas beras berwarna dengan keunggulan zinc tinggi. Penelitian ini bertujuan untuk mengetahui potensi zinc berdasarkan warna beras pecah kulit. Penelitian dilaksanakan Laboratorium Pemuliaan BB Padi dari bulan Februari sampai Juli 2022. Sebanyak 970 galur hasil persilangan biparental dan 10 varietas digunakan sebagai materi penelitian. Sampel berupa beras pecah kulit dari plot penelitian lapangan dengan rancangan augmented 5 blok. Analisa kandungan zinc menggunakan metode X-ray Fluorescence mesin XRF Machine Supreme 8000. Hasil menunjukkan bahwa terdapat perbedaan nyata kandungan zinc berdasarkan warna BPK. Beras putih memiliki rentang kandungan zinc yang paling luas dibandingkan beras merah dan hitam. Potensi zinc maksimum terdapat pada beras putih dapat mencapai 55,82 mg kg-1 dan potensi maksimum hasil 138,29 g per rumpun. Genotip padi semua kategori tipe beras hitam memiliki rentang kandungan zinc di atas potensi Inpari IR Nutri Zinc. Tipe beras Hitam C adalah beras yang memiliki varian paling luas. Tipe beras hitam yang memiliki peluang kandungan zinc sangat tinggi dan potensi hasil tinggi adalah tipe Hitam B dan Hitam E.
Efikasi herbisida Thiencarbazone-methyl+isoxaflutole terhadap pengendalian gulma dan hasil tanaman (Zea mays L.)
Authors: Chaniago Irawati , Ardi Ardi , Hariandi Doni , Sari Winda Purnama , Purnama Adi
Published: July 2023

Maize is a second important food crop, its yield is the raw material for the feed industry. As for other crops, maize can not avoid weed association and interference. Weed may cause farmers’ economic loss. An experiment to determine the efficacy of thiencarbazone methyl+isoxaflutole herbicide and its effects to control weeds and maize yield was conducted from October 2022 to February 2023 at Ultisol of Universitas Andalas, Limau Manis, Padang. The experimental units were laid out according to a completely randomized block design (CRBD) with 10 treatments and three replications. The treatment was different types of weed control namely: no weeding, various doses of herbicide thiencarbazone-methyl 90 g L-1+isoxaflutole 225 g L-1 i.e 250 mL ha-1, 300 mL ha-1, 350 mL ha-1, and 400 mL ha-1 applied at 2 and 10 DAP, respectively, and manual weeding. Herbicide thiencarbazone-methyl 90 g L-1+isoxaflutole 225 g L-1 effectively controlled Erechtites valerianifolia, Oxalis barrelieri, and Asplenium rhizophyllum. Herbicide at 350 mL ha-1 applied dose at 2 DAP reduced weed dry weight per m-2 as much as 93% at 6 WAP. Weed control by herbicide application increased 72.20% of maize yield per ha compared to the no-weed-control treatment group without causing phytotoxicity on maize plants.ABSTRAK Tanaman jagung merupakan tanaman pangan penting kedua dan menjadi bahan baku industri pakan. Seperti tanaman lainnya, tanaman jagung juga tidak dapat terhindar dari interaksi dan asosiasi dengan gulma. Keberadaan gulma pada pertanaman jagung dapat menimbulkan kerugian ekonomis. Penelitian dilakukan untuk mengetahui pengaruh efikasi herbisida thiencarbazone-methyl+isoxaflutole yang diaplikasikan pada waktu berbeda terhadap pengendalian gulma dan hasil tanaman jagung telah dilaksanakan pada bulan Oktober 2022 sampai Februari 2023 pada tanah ultisol kampus Universitas Andalas Limau Manis, Padang. Penelitian dilaksanakan menggunakan rancangan acak kelompok (RAK) dengan 10 perlakuan dan 3 ulangan. Perlakuan adalah tanpa pengendalian gulma, berbagai dosis herbisida thiencarbazone-methyl 90 g L-1+isoxaflutole 225 g L-1 yaitu 250 mL ha-1 , 300 mL ha-1 , 350 mL ha-1 , dan  400 mL ha-1 yang masing-masing diaplikasikan pada 2 dan 10 HST, dan pengendalian gulma secara manual. Herbisida thiencarbazone-methyl 90 g L-1+isoxaflutole 225 g L-1 dosis 250 hingga 400 mL ha-1 efektif mengendalikan gulma Erechtites valerianifolia, Oxalis barrelieri, dan Asplenium rhizophyllum. Herbisida dosis 350 mL ha-1 diaplikasikan 2 HST menurunkan hingga 93% bobot kering gulma m-2 pada 6 MST. Pengendalian dengan herbisida dapat meningkatkan hasil jagung per ha sebesar 72,20% dibandingkan perlakuan tanpa pengendalian gulma tanpa menimbulkan gejala fitotoksisitas pada tanaman jagung.
Respons keserempakan berbunga dan mutu benih beberapa galur jagung manis (Zea mays subsp. mays L.) terhadap aplikasi dosis pupuk boron
Authors: A M Kartina , Laila Alfu , Natawijaya Azis , Susilawati Riski
Published: July 2023

Synchronizing flowering and seed quality in an effort to increase sweet corn seed yields can be done by developing superior lines and proper fertilization. This research was aimed to know the response of flowering synchrony and seed quality of several lines of sweet corn (Zea mays subsp. mays L.) under boron fertilizer application. The research was conducted at the Experimental Garden of PT. Benih Sumber Andalan (BSA) in Dramaga District, Bogor Regency - West Java, from October 2022 to February 2023. This research used a Split Plot Design with two factors. Sweet corn line as the main plot consisted of five levels, namely BSA1 line, BSA2 line, BSA3 line, BSA4 line, and BSA5 line. The dose of boron fertilizer as sub plots consisted of four levels, namely 0, 10, 15, and 20 kg ha-1. The results showed that the BSA1 sweet corn line had the best effect on the male flowering time parameter. The dose of boron fertilizer 15 kg ha-1 had the best effect on the parameters of male flowering time , female flowering time, ASI (Anthesis Silking Interval), cob weight without cobs, seed weight per cob, number of seeds per cob, and seed germination rate. Combination treatment of BSA1 sweet corn line with boron fertilizer dose of 15 kg ha-1 is able to increase the synchronization on male flower flowering time and female flowering time.ABSTRAKSinkronisasi pembungaan dan mutu benih dalam upaya meningkatkan hasil benih jagung manis dapat dilakukan dengan mengembangkan galur-galur yang unggul dan pemupukan yang tepat. Penelitian ini bertujuan untuk mengetahui respons sinkronisasi pembungaan dan mutu benih beberapa galur jagung manis (Zea mays subsp. mays L.) terhadap aplikasi dosis pupuk boron. Penelitian dilaksanakan di Kebun Percobaan PT. Benih Sumber Andalan Kecamatan Dramaga, Kabupaten Bogor – Jawa Barat, pada bulan Oktober 2022 sampai Februari 2023. Penelitian menggunakan Rancangan Petak Terbagi (Split Plot Design) dengan 2 faktor. Galur jagung manis sebagai petak utama terdiri dari 5 taraf yaitu Galur BSA1, Galur BSA2 Galur BSA3, Galur BSA4 dan Galur BSA5. Dosis pupuk boron sebagai anak petak terdiri dari 4 taraf yaitu 0, 10, 15 dan 20 kg ha-1. Hasil penelitian menunjukkan bahwa galur jagung manis BSA1 memberikan pengaruh terbaik terhadap parameter umur berbunga bunga jantan. Dosis pupuk boron 15 kg ha-1 memberikan pengaruh terbaik terhadap parameter umur berbunga bunga jantan, umur berbunga bunga betina, ASI (Anthesis Silking Interval), bobot tongkol tanpa kelobot, bobot biji per tongkol, jumlah biji per tongkol, dan daya kecambah benih. Kombinasi perlakuan galur jagung manis BSA1 dengan dosis pupuk boron 15 kg ha-1 mampu meningkatkan sinkronisasi pembungaan pada umur berbunga bunga jantan dan umur berbunga bunga betina.