bluuebunny/crossref_metadata_2025 huggingface dataset:
Perancangan Antena Mikrostrip Patch Segi Empat DualBand Dengan Pencatuan EMC (Electromagnetically Coupled) Pada Frekuensi 2.4 GHz Dan 5.8 GHz
Authors: Salamah Ketty Siti , Amarullah Khoiron
Published: February 2022

Perkembangan teknologi nirkabel dikalangan masyarakat sangat pesat terutama untuk kebutuhan seperti dizaman pandemi sekarang. Aktifitas untuk komunikasi menggunakan teknologi Wi-Fi sangatlah tepat. Wi-Fi sendiri memiliki peranan penting dalam mengoptimalkan sistem antena, peranan antena tidak sebatas komunikasi melainkan pada sistem data, Namun karena pengaruh dari berbagai faktor maka sinyal yang diterima pengguna sering mengalami gangguan. Antena mikrostrip ini berbentuk segi empat dan Pencatuan electromagnetically coupled. Teknik ini diharapkan mampu memperbaiki karakteristik dari antena. Software yang diperlukan untuk merancang antena ini adalah computer simulation technology (CST). Pada penelitian ini telah dilakukan perancangan dan pengukuran antena. Hasil pengukuran menunjukkan antena dapat bekerja pada frekuensi 2.4 GHz dan 5.8GHZ, return loss -10.47 dB dan -24.50, VSWR 1,12 dan -24.50, dan gain -45.38 dB dan -53.73. Nilai Pancar daya terima maksimum pada sudut 20 dana daya terima minimum pada sudut 110 didapatkan hasil pola radiasi antena 2.4 GHz dan 5.8 GHz 31.62.
Granuloma annulare mimicking cutaneous sarcoidosis.
Authors: Daldoul Mariem , Korbi Mouna , Akkari Hayet , Sriha Badreddine , Belhadjali Hichem , Zili Jameleddine
Published: February 2022

Granuloma annulare (GA) is a benign skin granulomatous, with, usually,
unknown cause. Few challenging cases of GA have been reported in the
literature mimicking sarcoidosis. We describe a rare clinical
presentation of GA mimicking cutaneous sarcoidosis.
The Atom of the Mathematical “Reality” or the Composition and Decomposition of the Whole
Authors: Modreanu Simona , Gavrilut Alina , Crumpei Gabriel , Agop Maricel
Published: February 2022

In this paper, we aim at a transdisciplinary approach on atomicity. We especially focus on the mathematical perspective and we highlight the intimate, usual, defining property of the atom of being, in a sense, the essential indestructible, indivisible, irreducible, minimal, and self-similar unity. Using notions, concepts, and results, we try to answer the question \What is the atom?" from a mathematical perspective, offering at the same time a series of possible interpretations and meanings that exceed its strict limits.
Defect-deferred correction method for the non-stationary coupled Stokes/Darcy model
Authors: Yang Yanan , Huang Pengzhan
Published: February 2022

This paper develops the defect-deferred correction method to solve the
non-stationary coupled Stokes/Darcy model. This method is a combination of
defect correction method and deferred correction method. And it can not only
achieve the second order accuracy in time, but also be applied to the
problem with small viscosity and hydraulic conductivity coefficients. The
theoretical proof of the stability and the second order accuracy in time are
shown. Some numerical experiments are given to verify the error convergence
order in time. In addition, compared with the standard Galerkin finite
element method, the advantages of the presented method in calculating small
viscosity and hydraulic conductivity coefficients will also be reflected in
the numerical experiments.
Existence of solutions to non-linear quadratic integral equations via measure of non-compactness
Authors: Karmakar Surajit , Garai Hiranmoy , Dey Lakshmi , Chanda Ankush
Published: February 2022

The objective of this manuscript is to enquire for the solvability of a
specific type of non-linear quadratic integral equations via the interesting
notion of measure of non-compactness. Firstly, we inquire into couple of
exciting fixed point theorems involving a measure of non-compactness in the
setting of a Banach space. Subsequently, bringing into play a suitable
measure of non-compactness and the acquired results, we discuss the
existence of solutions to the aforementioned kind of non-linear quadratic
integral equations.
Slant helices in Minkowski 3-space E31 with Sasai’s modified frame fields
Authors: Uddin Siraj , Stankovic Mica , Iqbal Mohd , Yadav Sarvesh , Aslam Mohd
Published: February 2022

In this paper, we study slant helix using modified orthogonal frame in
Minkowski space E31 with timelike, lightlike and spacelike axes. We also
study a general slant helix with the Killing vector field axis. Furthermore,
we give a non-trivial example and find the relations for curvature and
torsion of f-biharmonic slant helix.
Geometric solitons in a D-homothetically deformed Kenmotsu manifold
Authors: Blaga Adara
Published: February 2022

We consider almost Riemann and almost Ricci solitons in a D-homothetically deformed Kenmotsu manifold having as potential vector field a gradient vector field, a solenoidal vector field or the Reeb vector field of the deformed structure, and explicitly obtain the Ricci and scalar curvatures for some cases. We also provide a lower bound for the Ricci curvature of the initial Kenmotsu manifold when the deformed manifold admits a gradient almost Riemann or almost Ricci soliton.
The λ-Aluthge transform and its applications to some classes of operators
Authors: Zid Sohir , Menkad Safa
Published: February 2022

Let T ? B(H) be a bounded linear operator on a Hilbert space H, and let T =
U|T| be its polar decomposition. Then, for every ? ? [0,1] the ?-Aluthge
transform of T is defined by ??(T) = |T|?U|T|1-?. In this paper, we
characterize the invertible, binormal, and EP operators and its intersection
with a special class of introduced operators via the ?-Aluthge transform.
The η-Hermitian solutions to some systems of real quaternion matrix equations
Authors: Zhang Xiang
Published: February 2022

Let Hmxn be the set of all m x n matrices over the real quaternion algebra. We call that A ? Hnxn is ?-Hermitian if A = A?* where A?* = -?A*?,? ? {i,j,k},i,j,k are the quaternion units. In this paper, we derive some solvability conditions and the general solution to a system of real quaternion matrix equations. As an application, we present some necessary and sufficient conditions for the existence of an ?-Hermitian solution to some systems of real quaternion matrix equations. We also give the expressions of the general ?-Hermitian solutions to these systems when they are solvable. Some numerical examples are given to illustrate the results of this paper.
A study of copper leaching from the tailings of the Karagaily (Republic of Kazakhstan) concentrating factory using an electric hydropulse discharge
Authors: Borsynbayev Askhat , Omarov Khylysh , Mustafin Yedige , Havlícek David , Absat Zaure , Muratbekova Aigul , Kaikenov Dauletkhan , Pudov Alexandr , Shuyev Nikita
Published: February 2022

The method for using concentration plants tailings is proposed for the first time in this study. These tailings contain a number of valuable metals, such as Cu, Fe, Zn, etc., and are a potential raw material for obtaining concentrates of some elements. An electrohydropulse discharge was used to intensify the process of copper leaching and other metals. Ammonium bifluoride, the most effective of the ammonium salts used in copper leaching by the ammonization method, was chosen as the reagent. The influences of significant leaching parameters were studied and optimized using probabilistic deterministic planning of experiment. Based on the study findings, the following process conditions were found to be optimal: mass ratio of solid to liquid (S:L) of 1:1; Cu:F = 1:6; sulphuric acid concentration 40 g L-1; experiment duration 30 min; discharge voltage 10 kV and a leaching efficiency of 80-85 % could be achieved. Comparative features of tailings samples from the Karagaily (Republic of Kazakhstan) concentration plant were studied using X-ray diffraction (XRD), scanning electron microscope (SEM) and atomic emission spectral analysis. The study results showed that copper was maximally transferred to the aqueous phase.
The PCAOB Inspection Process: A Client-Level Analysis of a Large Firm's Experience
Authors: Christensen Brant E. , Newton Nathan J. , Wilkins Michael S.
Published: February 2022

We use proprietary archival data to examine one annually inspected audit firm's experience with the PCAOB inspection process. We find that the firm's audits are primarily selected for inspection due to client characteristics, while deficiencies identified by inspectors are related to characteristics of both the client and the audit team. We also find that not all identified audit deficiencies are reported to the public. However, we find some evidence that only publicly disclosed deficiencies are associated with ex post measures of audit quality, suggesting that the PCAOB releases only the most relevant and material information to the public. Finally, we find that inspections affect the concurrent year's audit team staffing decisions and reduce the proportion of the audit that is completed during the interim period. Overall, our study provides important insights into the PCAOB inspection process while also developing and validating a model of inspection risk for future researchers.
Knowledge Sharing in Auditor-Provided Tax Services: Experiences of Audit and Tax Personnel
Authors: Hux Candice T. , Bedard Jean C. , Noga Tracy J.
Published: February 2022

Research generally finds positive audit and tax outcomes associated with auditor-provided tax services (APTS), attributing knowledge sharing (KS) between tax and audit as the underlying cause but not observing it. This study contributes to the APTS literature by investigating experienced audit and tax professionals’ perspectives about when and how KS occurs. Results imply that KS occurs in two phases and is enhanced or inhibited by multiple factors related to knowledge relevance, motivation, opportunities, and culture. First, audit and tax personnel often share client information and their domain expertise while interacting during the audit, which enables identifying potentially valuable APTS. Second, further KS can occur during/following APTS performance, and APTS results may be shared back to benefit the audit. Our evidence shows that key factors may vary across phases, underscoring the importance of considering the full APTS process. Based on our findings, we suggest a number of future research opportunities.

JEL Classifications: M41; M42.
Restoration of Autophagic Flux Improves Endothelial Function in Diabetes Through Lowering Mitochondrial ROS-Mediated eNOS Monomerization
Authors: Zhao Lei , Zhang Cheng-Lin , He Lei , Chen Qinghua , Liu Limei , Kang Lijing , Liu Jian , Luo Jiang-Yun , Gou Lingshan , Qu Dan , Song Wencong , Lau Chi Wai , Ko Ho , Mok Vincent C.T. , Tian Xiao Yu , Wang Li , Huang Yu
Published: February 2022

Endothelial nitric oxide synthase (eNOS) monomerization and uncoupling play crucial roles in mediating vascular dysfunction in diabetes, although the underlying mechanisms are still incompletely understood. Increasing evidence indicates that autophagic dysregulation is involved in the pathogenesis of diabetic endothelial dysfunction; however, whether autophagy regulates eNOS activity through controlling eNOS monomerization or dimerization remains elusive. In this study, autophagic flux was impaired in the endothelium of diabetic db/db mice and in human endothelial cells exposed to advanced glycation end products or oxidized low-density lipoprotein. Inhibition of autophagic flux by chloroquine or bafilomycin A1 were sufficient to induce eNOS monomerization and lower nitric oxide bioavailability by increasing mitochondrial reactive oxygen species (mtROS). Restoration of autophagic flux by overexpressing transcription factor EB (TFEB), a master regulator of autophagy and lysosomal biogenesis, decreased endothelial cell oxidative stress, increased eNOS dimerization, and improved endothelium-dependent relaxations (EDRs) in db/db mouse aortas. Inhibition of mammalian target of rapamycin kinase (mTOR) increased TFEB nuclear localization, reduced mtROS accumulation, facilitated eNOS dimerization, and enhanced EDR in db/db mice. Moreover, calorie restriction also increased TFEB expression, improved autophagic flux, and restored EDR in the aortas of db/db mice. Taken together, the findings of this study reveal that mtROS-induced eNOS monomerization is closely associated with the impaired TFEB-autophagic flux axis leading to endothelial dysfunction in diabetic mice.
Disciplinary Challenges in Folklore Studies in Romania after 1945. Two Case Studies from the Cluj Folklore Archive (Arhiva de Folclor din Cluj).
Authors: BRANDA Alina
Published: February 2022

"The main goal of this paper is to adequately understand the shifts produced after 1945 in Folklore Studies (Ethnology)
in terms of research topics, methodologies, approaches, and scientific policies, in connection with the new political
and ideological context. In particular it aims at discussing how, why and to what extent the Cluj Folklore Archive could
be defined as a cultural institution playing an important role at the regional level whilst contributing to a correct socio-
cultural understanding of Transylvania in relation to the other Romanian provinces. Content analysis will be the main
methodology used, whereas the intricate connections and relationships among archives, memory, and territorial and
cultural identities shown in the sources will support the process of understanding, deepening, and widening the
researched topic."
Using Lotus Blossom Strategy in Geography
Authors: CHIȘ OLGA
Published: February 2022

"This research analyses the way in which the Lotus Blossom technique has been
described and used worldwide, including Romania and it investigates several ways
to apply it based on the geographic content. Based on analysing the way this
technique was applied it has been found that it may be applied to various topics,
both individually and in groups, depending on the geography teacher’s expertise,
creativity, skills and employed methodology. During the organised activities, Lotus
Blossom was used to highlight and develop the most relevant subtopics on a topic,
this process being also applied as an activity of introducing and assessing students’
knowledge, of extracting, evaluating, selecting, and synthesising information from
various sources while systematising them by visual representation (diagram or
table). During an activity in which students were asked to solve a problem
(“Christmas Market”), Lotus Blossom was used head-on to break down the problem
into “smaller” sub-problems or tasks, to identify or discover them, and to further
analyse and split them in order to be able to solve them punctually. In this case,
the Lotus Blossom strategy can be compared to the Kaoru Ishikawa diagram."
Kajian Awal Pemanenan Siput Laut (Gastropoda) di Pantai Krakal, Yogyakarta: II. Aktivitas Pemanen
Authors: Zahida Felicia , Sinulingga Mastok B. , Jati Wibowo N.
Published: February 2022

A preliminary study on marine snails harvest (Gastropods) has been done in Krakal beach, Yogyakarta, during October to December 2003. Krakal beach has become an under-pressure habitat since tourism industry occurred all over Indonesia. Marine snails have been harvested for over two decade in this area but there is no study regarding this activity yet. This study aims to elucidate the harvester’s knowledge about simple conservation and activities such as the way of harvesting, the intensity of harvesting and the income generating from harvesting gastropods.
Penambahan Tepung Cangkang Udang dalam Pakan Buatan Sebagai Penguat Warna Ikan Koi (Cyprinus carpio L.)
Authors: Saloh Arry Yusnita , Aida Yuniarti , Zahida Felicia
Published: February 2022

Shrimp’s skin and carapace has been used as color enhancement. The shrimp’s skinand carapace was pounded into flour and added to the commercial pellet availablelocally. The shrimp’s flours contains red pigmen astaxanthine. The Koi’s used in thisexperiment were two months old Cyprinus carpio L var kohaku. Five level of differentconcentration of shrimp’s flour were used i.e. 5.7%, 8.5%, 11.4%, 14.2%, and 17.1%respectively. Each aquarium contains three fishes were used in threeplicate and rearedfor 8 weeks. Five main color or hue was observed i.e. Redish Orange, Pastel Orange,Orange Red or Yellowish Red, Red and High Red or Vivid Red. 15 panelis have beenused to give their comments to the color enhancement. The results shows that the valueof the fish’s color didn’t change much, but the chrome intensity increase on week eight.Statistical analysis of Kruskall-Wallis and Mann-Whitney Test shows that on theconcentration of shrimp flour of 11,4% was giving the best value for hue and chrome.On the consentration of 14,2% and 17,1% the results were not strong enough. This isprobably because the concentration of the flour reaches maximum at 11,4% and givingmaksimum color enhancement level so that more additioing didn’t gave any change.
Indeks Glisemik Kacang Buncis (Phaseolus vulgaris) dan Kacang Panjang (Vigna sesquipedalis) serta Uji Efek Hipoglisemiknya pada Tikus Sprague Dawley
Authors: Marsono Y. , Triwitono Priyanto , Kanoni Sri
Published: February 2022

Glycemic index (GI) of foods has been suggested as an additional parameter in selecting foods for the diabetic patients in nutritional management. GI was measured as the area under the postprandial blood glucose curve for a food expressed as a percentage of the area after the consumption of reference food (bread). In this research two legumes were investigated including snap bean (Phaseolus vulgaris L.) and yardlong bean (Vigna sesquipedalis). The objectives of this research were (i) to determine the IG of the beans and (ii) to investigate the effects of these legumes on serum glucose concentration of alloxan-induced diabetic rats. Ten health and normal volunteers (not diabetic) were provided. The volunteers took an overnight fasting, blood were drawn in the morning and analyzed for serum glucose. Then they were given the test beans containing total carbohydrates equivalent to 25-g glucose to be consumed. Blood samples were drawn for glucose measurement every 30 minutes until 120 min after meal. Serum glucose was determined enzymatically and the glucose responses were drawn graphically to calculate the GI of the beans. These beans were evaluated for their hypoglycemic properties in alloxan-induced diabetic rats. They were fed modified AIN 93 diets contain 20% of energy derived from snap bean or yardlong bean for 28 days. Serum glucose concentrations were measured weekly. It was found that with white bread as the food standard the GI of the snap bean and yard long bean were 43 and 86, respectively. In 28 days of diet intervention, snap bean decreased the serum glucose level by 73% (from 212mg/dL to 56mg/dL). Similar effect were found for the yardlong bean. This bean can reduced serum glucose level about 73% (from 224mg/dL top 61mg/dL), but both were similar to control diet that decreased the serum glucose level about 72% .
Sifat Antioksidatif Ekstrak Kunir Putih (Curcuma mangga Val.) dengan Pelarut Aseton, Etanol atau Metanol
Authors: Pujimulyani Dwiyati
Published: February 2022

A study on the antioxidative properties of white saffron extracted with aceton, ethanol or methanol was undertaken. The purpose of this research is to have a white saffron extract with a high antioxidant activity. White saffron rhizome was peeled, washed, grated, and added within either aceton, ethanol or methanol (white saffron : solvent = 1:3 or 1:4) (W/V) then stirred for 1 hour. The residue was washed with solvent in the same volume. The antioxidant activity of the extract was measured by Ferrythiocyanate (FTC) or Thio Barbituric Acid (TBA) methods. The result showed that the antioxidant activity of white saffron extracted with ethanol was higher than that with methanol, and aceton, respectively. The highest antioxidant activity was obtained from the extract of white saffron extracted with ethanol.
Pengaruh Acetobacter xylinum dan Ekstrak Kacang Hijau (Phaseolus radiatus L.) terhadap Produksi Nata dari Substrat Limbah Cair Tahu
Authors: Souisa George M. , Sidharta B. R. , Pranata F. Sinung
Published: February 2022

Industrial waste-water has become a serious problem nationwide. However, one type of waste-water, i.e. tofu waste-water (whey), can be utilized as the source of nata de soya production. This present research is attempts to reveal the effect of various concentrations of inocula and green-bean extracts on nata productions from tofu waste-water. Ten combinations of treatment were applied and coded as A1 – A10. The parameters observed included physical and chemical characters of nata and nitrogen (N) contents. The results show that the increase in concentration of N and inocula will follow by the increase of water content, fiber content, plasticity, and N content of nata de soya produced. Highest thickness of nata was gained at 200 g/L concentration of green-bean extract and 100 ml/L concentration of inoculum.
Mutu Bakteriologis Pindang Tongkol (Euthynnus affinis) yang Berasal dari Beberapa Pasar di Yogyakarta
Authors: Purwijantiningsih Ekawati , Mursyanti Exsyupransia
Published: February 2022

Food poisoning cases need to be examinated intensively. There have been five poisoning cases reported between 2003-2004 in Sleman area. Three of them were caused by contaminated tuna fish. The objective of this research was to determine bacteriological quality of salted tuna fish from several markets in Yogyakarta. Salted tuna fish sample were collected from five markets, namely Beringharjo, Condongcatur, Demangan, Kranggan and Sentul. In each market, four vendors were selected. Bacteriological test were done including total microbe cells utilizing PCA medium, Coliform test utilizing VRBA medium. Identification and isolation of Vibrio parahaemolyticus use pre-enrichment selective medium of Alkaline Petone Water and selective Chromogenic medium agar for Vibrio. Salmonella test utilizing Chromogenic agar continued by utilizing TSI and LIA medium. The result showed that bacteriological quality of salted tuna fish from markets in Yogyakarta did not fulfill the requirements based on SNI 01-2717-1992. It was shown that total microbial count were high, i.e. 2.4 x 105 – 5.27 x 107 CFU/ g. Coliform count ranged from < 2.5 x 101 - > 6.5 x 106 CFU/g. From 20 samples that were brought to analyzed, 60% was positively presumed contaminated by V. parahaemolyticus and 50% was positively presumed contaminated by Salmonella.
Pengaruh Heat-Moisture Treatment dan Penambahan Natrium Tripolifosfat terhadap Kualitas Mi instan dari Pati Ubi Jalar (Ipomoea batatas (L) Lam)
Authors: Suryani Chatarina Lilis
Published: February 2022

The objective of the present study was to evaluate the effect of heat-moisturetreatment (HMT) and sodium tripolyphosphate (STPP) addition on the quality ofinstant noodles from sweet potato starch. The diversification of raw material used innoodle production often necessitates processing modifications. Heat-moisturetreatment was applied to native sweet potato starch (HMTSPS) in three conditions(1100C; 10, 20 and 30 min) and STPP was added in three level (0,60; 0,75 and 0,90%).HMTSPS, STPP, water, lecitin and CMC were mixed. The mixture was pelleted,steamed and extruded. The extruded noodles were dried using a microwave oven. Thenoodles were evaluated both when dry and after cooking. The HMT method andSTPP addition improved noodle quality. Swelling index, solid loss and cooking loss ofthe noodles was decreased, while the texture and the elastisity of the noodles washigher. But noodles made with added of STTP more than 0,75% had low elastisity.The best instant noodle prepared by HMT method for 20 min and added of STTP0,75%.
Observations on Natural Foods and Nutrition Content of Critically Endangered Turtle (Leucocephalon yuwonoi) in Central Sulawesi
Authors: Riyanto Awal , Wirdateti Wirdateti , Soemarno Suprayogo
Published: February 2022

Kura-kura Sulawesi (Leucocephalon yuwonoi) adalah satu dari dua jenis kura-kura endemik Sulawesi dengan penyebaran yang terbatas. Sejauh ini data natural historinya sangat minim, padahal sangat dibutuhkan dalam upaya penangkaran satwa yang berstatus kritis IUCN ini. Penelitian ini bertujuan untuk mengungkap tentang pakan di alam beserta kandungan nutrisinya. Survei lapangan dilakukan di kawasan Bangkir dari tanggal 23 Mei sampai 5 Juni 2004 dan di Moutong dari tanggal 11 sampai 19 Oktober 2004. Data pakan di alam diperoleh dari analisis sampel feces dan hasil wawancara kepada para pemburu kura-kura beserta pengumpul. Kepastian nama jenis pakan diperoleh dengan melakukan identifikasi sampel tumbuhan pakan di Herbarium Bogoriense. Data kandungan nutrisi diperoleh melalui analisis proksimat sampel pakan yang terkoleksi selama survei. Hasil penelitian ini menunjukkan bahwa terdapat 32 jenis tumbuhan yang jadi sumber pakan di alam, variasi kandungan nutrisi yang cukup besar, kandungan lemak rendah berkisar antara 0.74 - 8.33% (2.41+2.03) dari berat kering. Berdasarkan dominansi, keberadaan di habitat (multiple season) dan tingginya kandungan energi diduga kuat bahwa Colocasia esculenta, Limnocharis flava and Ipomoea aquatica merupakan pakan utama di alam.
Perilaku Spasio Temporal Tikus Sawah (Rattus argentiventer) Betina
Authors: Hadi Susilo , Subagja Jusup , Sudarmaji Sudarmaji
Published: February 2022

This research aimed to study spatio temporal behavior of the female ricefield rat, Rattus argentiventer, including home range, range spans, habitat use and daily activity. Twelve rats were released in two locations of a ricefield area from June 11th until July 24th, 2001. The movement of each rat was monitored using radio-tracking three times a day. The result was used for calculating home range size, range spans, habitat used and daily activities of female field-rats, using the computer program Ranges V. The results showed that the average female ricefield-rat’s home ranges and range spans were 0.84  0.16 Ha and 184.54  22.7m respectively. During daylight, the rats spent 82%, 16% and 2% of their activity living in dikes, in villages and in ricefield respectively. On the contrary, during the night 95%, 3% and 2% of the rats were active in the ricefield, villages and dikes respectively.
Perbandingan Karakter Meristik dan Morfometrik Dua Jenis Ikan Lajur Kepala Kecil Eupleurogrammus muticus (Gray, 1831) and E. glossodon (Bleeker, 1860) (Percifomes: Trichiuridae)
Authors: Burhanuddin Andi Iqbal , Iwatsuki Yukio
Published: February 2022

Penelitian ini bertujuan untuk membandingkan karakter meristik dan morfometrik antara dua jenis ikan lajur kepala kecil Eupleurogrammus muticus (Gray, 1831) dan E. glossodon (Bleeker, 1860) berdasarkan holotype, syntype dan non-type spesimen. Hasil penelitian ini menunjukkan bahwa kedua jenis ikan lajur tersebut dapat dibedakan berdasarkan karakter berturut-turut sebagai berikut: sirip dada pada jenis E. muticus terletak pada posisi sejajar dengan sirip punggung yang ke-17 dan 18 sedangkan pada E. glossodon terletak pada posisi yang ke-11 sampai 13; sirip dubur terletak pada posisi sejajar sirip pungung ke-40 sampai 42 (vs. 33-36); jumlah keseluruhan jari-jari sirip punggung sebanyak 142-148 buah (vs. 131-134); precaudal vertebrae 41-42 buah (vs. 32-36); jumlah total vertebrae 193-194 buah (vs. 160-163); kisaran panjang caudal peduncle 49% - 66% dari panjang tubuh depan dubur (vs. 29-37%). Karakter-karakter tersebut sangat penting untuk dijadikan sebagai dasar pembeda antara kedua jenis ikan lajur kepala kecil, E. muticus dan E. glossodon.
Kinetika Adsorpsi Ion Besi (II) Oleh Biomassa Chaetoceros sp.
Authors: Widyawati Paini Sri
Published: February 2022

This research was done to study the adsorption kinetic of ferrous ionic by Chaetoceros sp. Many variables influenced the adsorption capacity of absorbent on ferrous ionic including interaction time, ferrous ionic concentration and pH. Two absorbens were used in this study i.e. pure culture and natural spoiled product called Diatomite/ Diatomae earth / Diatomaceous earth / Diatomooze of Chaetoceros sp. biomass. The adsorption capacity by biomass was measured by atomic absorption spectrophotometry method (AAS). The result showed that the adsorption process of two absorbents happened very fast. The time needed to get maximal adsorption were 10 and 15 minutes respectively. Adsorption pattern of two biomass can be interpreted by Langmuir and Freundlich isoterm showing monolayer. The adsorption capacity of Diatomite was five times higher than that of the pure culture biomass because it was influenced by surface group charge and wide surface area of porous. Acidity degree (pH) of solution determined surface active group charge and solubility of iron (II). The increased pH value, the biomass adsorption capacity was added because surface active group had negative charge. The adsorption of biomass was maximal around pH 5 while for pH higher than 5, it wasn’t significantly increased because the iron (II) formed insoluble hydroxide compound.
Karakterisasi Genetik Anjing Kintamani Menggunakan Petanda Mikrosatelit
Authors: Puja I Ketut
Published: February 2022

Karakterisasi molekuler anjing Kintamani berperan penting dalam penentuan status trah dan mencegah penurunan kemurnian akibat perkawinan silang dengan trah anjing lain. Anjing Kintamani sangat popular di Bali. Anjing Kintamani dipercaya berasal dari Kintamani, Bangli, tetapi asal usulnya sampai kini belum jelas. Mikrosatelit merupakan runutan nukleotida terulang yang didistribusikan secara acak dalam gen vertebrata. Lokus mikrosatelit ini telah diketahui sangat polimorfik, karena keragaman jumlah nukleotida yang terulang. Mikrosatelit merupakan petanda allel utama yang dapat digunakan untuk pemetaan gen, genetika populasi dan identifikasi individu serta alat untuk mengungkap karakter genetik hewan. Pada penelitian ini diungkap karakteristik genetik anjing Kintamani menggunakan mikrosatelit. Jumlah dan ukuran allel pada 425 anjing Kintamani dianalisis menggunakan 116 macam primer mikrosatelit. DNA diisolasi dari sel hasil swab pipi. Amplifikasi 116 lokus mikrosatelit menggunakan PCR dalam 12 multiplek. Produk PCR dipisahkan dengan gel bis-akrilamid 6% dalam automated DNA sequencer. Flurosesnsi yang dihasilkan dideteksi dengan program Genescan 3.1, dan program Strand versi 2.2.39 digunakan untuk menghitung jumlah allel. Hasil penelitian menunjukkan bahwa jumlah allel yang didapat adalah 1128. Jumlah allel perlokus berkisar antara 3 (AHT136) sampai 41 (FH2138). Rataan PIC adalah 0,68 dan semua lokus bersifat polimorfik.
Aktivitas Trypsin Inhibitor Berbagai Varietas Biji Kedelai (Glycine max L.) dan Perubahannya Selama Perkecambahan Biji dari Varietas Terbaik
Authors: Kanetro Bayu , Noor Zuheid , Indrati Retno
Published: February 2022

This study investigated the activity of trypsin inhibitor (TI) of some soybean (Glycine max L.) varieties and the change in TI activity during seed germination of the best variety. The research was aimed to determine the best variety of soybean and germination time based on the highest TI activity. There were 5 varieties of soybeans, Paderman, Argomulyo, Kaba, Sinabung, and Ijen. The best variety of soybean was Sinabung as shown by the highest TI activity. The soybean of Sinabung variety was germinated for 6 various germination times at 12, 24, 36, 48, 60 and 72 hr. The result showed that the variation of germination time changed TI activity. TI activity decreased significantly after 36 hr of germination of soybeans. The best time of germination was 36 hr.
Pengaruh Penggunaan Umpan dan Konstruksi Funnel terhadap Hasil Tangkapan Bubu Laut Dalam di Teluk Palabuhanratu
Authors: Purbayanto Ari , Susanto Adi , Husni Eddi
Published: February 2022

The main objective of this research was to analyze the influence of bait and funnel constructions on the catch of deep sea pot in Palabuhanratu Bay. The experimental fishing used each of 5 units rigid and soft funnel of the deep sea pots filled with bait of shark and ray meat. The result showed that shark and ray baits did not have a significant influence on the weight of pots catch. The rigid and soft funnel constructions also did not have a significant influence on the catch. Therefore, both shark and ray baits used on the deep sea pots for catching fish at the depth of 200 m in Palabuhanratu Bay had the same effectiveness. The rigid funnel pot was a more suitable construction to catch fish, because it was easy to construct, relatively heavy and fast to sink, so it reduced the setting time.
The Growth of Giant Clams Juvenil is Influenced by Nutrient Addition
Authors: Ambariyanto Ambariyanto
Published: February 2022

Ekosistem karang merupakan daerah yang memiliki produktivitas tinggi namun kandungan nutrient anroganiknya sangat rendah. Sehingga dapat diduga bahwa kenaikan nutrient anorganik dalam ekosistem ini akan mempengaruhi kehidupan organisme yang ada di dalamnya. Penelitian ini bertujuan untuk melihat pengaruh peningkatan nutrien yakni N dan P terhadap pertumbuhan juvenil Kima. Hasil penelitian menunjukkan bahwa dengan penambahan nutrien N secara nyata meningkatkan pertumbuhan juvenil Kima tersebut. Di lain pihak penambahan P tidak berpengaruh terhadap laju pertumbuhan juvenil Kima. Hasil ini menunjukkan bahwa penambahan ammonium seharusnya dilakukan di hatchery untuk meningkatkan pertumbuhan dan produksi Kima.
Keragaman Daerah Kontrol DNA Mitokondria Rusa Timor (Cervus timorensis timorensis) di Pulau Timor, Alor, dan Pantar
Authors: Zein M. Syamsul
Published: February 2022

A study on mtDNA control region diversity of the timor deer was conducted in EastNusa Tenggara Province. Sample consisted of 20 individuals from 3 islands (Timor,Pantar, and Alor). Total DNA were extracted from leucocyte (buffy coat). Fragmentcontrol region of the mitochondrial DNA were amplified by Polymerase ChainReaction (PCR) using primers of forward primer5”AAACCAGAAAAGGAGAGCAAC3” and reverse primer5”TCATCTAGGCATTTTCAGTGCC3”. Nucleotide sequence of the mitochondrialcontrol region were aligned by using ClastalX and phylogenetic analyses by Neighbor-Joining methode. Kimura two-parameter model of nucleotide substitution usingpairwise distance calculation program was implemented with the Mega softwareversion 3. The purposes of this study, were to examine the control region (D-Loop) ofthe mitochondrial DNA and to discuss the phylogeography of the Cervus timorensistimorensis in East Nusa Tenggara Province. Results indicated that from 435 basenucleotide sequences, 16 polymorphic sites with 8 haplotypes were found among 3islands. Haplotype diversity and nucleotide diversity were 0.056 and 0.039. DNAdistances values ranged from 0.014 to 0.021.
Studi Pakan Burung Perkici Pelangi (Trichoglossus haematodus Linnaeus, 1771) dalam Laboratorium Penangkaran
Authors: Widodo W.
Published: February 2022

During the 2002-2003 period, the research was done to study 11 Rainbow Lorikeets reared in an animal house laboratory. The aim of this research was to find the food rations formule of the Rainbow Lorikeets so that those birds can be able to grow and breed well. The food rations were composed of 26.3% local bird foods (521), 35.09% lampung bananas, 8.77% slice corns, 10.5% boiled quails eggs, 1.75% white bread, bean sprouts and red sugar are 8.77%, respectively. All of food materials were mixed on the plastic cup and mixed with 450 ml of water, then pulverized like sweet porridge. That porridge was given to birds in cafeteria and the water was made ready “ad libitum” everyday. The results have shown that giving food rations formula can stimulate two pairs of the Rainbow Lorikeets breeding and during the 2002-2003 period they produced three young birds.
Jenis Tanaman Berguna Bagi Suku Dani di Lembah Baliem, Papua (Short Communication)
Authors: Arobaya Agustina , Pattiselanno Freddy
Published: February 2022

Dua studi lapangan yang terpisah telah dilakukan di Lembah Baliem (138030’– 139030’ BT dan 3400’ – 4200’LS) Papua untuk mengidentifikasi jenis-jenis tanaman berguna bagi suku Dani yang hidup di lembah tersebut. Studi lapangan pertama dilakukan selama lima bulan (Maret – Juli 1994) di Mume-Kuyawage dan Mapnduma. Studi ini merupakan bagian dari program kajian ekologi Taman Nasional Lorentz dari WWF. Studi kedua merupakan observasi singkat (21 - 26 Mei 2005) di sekitar kota Wamena yakni Kumima, Siapkosi, Napua, Sinakma, Pisugi, Wanima, Sunili, Tulem dan Woma. Studi ini bagian dari penelitian usaha peternakan tradisional kerjasama Dinas Peternakan Kabupaten Jayawijaya, International Potato Centre (CIP) Bogor and South Australian Research and Development Institute (SARDI). Investigasi langsung dilakukan diikuti dengan wawancara semi-struktural untuk menghimpun informasi tentang jenis tanaman berguna yang biasanya dimanfaatkan oleh suku Dani.
Kualitas Keripik Bengkuang (Pachyrrhizus erosus (L.) Urb.) dengan Variasi Konsentrasi Ekstrak Bunga Rosela (Hibiscus sabdariffa Linn.)
Authors: Setyasih Martina , Pranata F. Sinung , Purwijantiningsih Ekawati
Published: February 2022

Yam bean chips have crispy texture and sweet taste. In this research, rosella extract is added in the mold of yam bean chips as natural preservaties, fiber and sources anthocyanin. The aim of this research is to know the effect of various consentrations of rosella extract on chips qualities. Research design utilized was randomized complete factorial design and the data compiled was treated by Anova and followed with Duncan’s Multiple Range Test (DMRT) with degree of convidence 95%. Chips with 0,67% rosella extract added has longer shelf life than chips with out rosella extract added. This Chips contain 0,59% water, 2,6% protein, 38,84% fat, 3,69% ash, 54,16% carbohydrate, 1,17 mg/100g ascorbic acid, 1,4 mg/l anthocyanin, 1,17% acid total, 86,74%fiber crude, 53,47 level of lightness and total microorganism 30 CFU/G.
Pemanfaatan Ekstrak Daun Kecubung (Datura metel L.) Sebagai Pembius Ikan Koi (Cyprinus carpio L.) Pada Saat Pengangkutan
Authors: Hariyanto Sapto Eko , Pranata F. Sinung , Aida Yuniarti
Published: February 2022

Either decorative fish or consumption fish would be costlier in price if sold in a state of life. However both having the same problems that is death at the time of transportation process. From former research has been obtained information that transportation of fish in a state of life can be done by using material anaesthesia either experiencing and also artificial. Usage of chemical material as fish anaesthetic is felt able to give unfavourable effect to quality and fish health. Purpose of this research knows concentration of metel thorn apple leaf extract and soaking stripper that is most effective in anaesthesia of fish koi (Cyprinus carpio L.) and knows does metel thorn apple leaf extract can lessen fish mortality koi (Cyprinus carpio L.) at the time of transportation of long distance. Initial concentration which will be applied is 0,4%, 0,1%, 0,06%, 0,03% and 0% as control, because concentration doesn't have an effect on concentration is boosted up to become 0,4%, 0,7% and 1% with soaking stripper 4, 8, 12 hours. Result of research shows concentration of 0,7% and soaking stripper of 8 hour, this time is most effective in anaesthesia of fish koi (Cyprinus carpio L.) because level of survival rate 100% with induction time stripper and recovery time is stripper. Research is continued with test trasportasi compared to control, where fish is not anaesthetized packed into plastic poke and given with pure oxygen like treatment that is usualy is done the fish farmers in process of transportation. Result of this research indicates that, treatment of fish anaesthetized with metel thorn apple leaf extract level of pass of life reachs 91,667% while controlling 66,667%. From result of inferential research that usage of metel thorn apple leaf extract at the time of transportation of proven long distance can lessen fish mortality koi (Cyprinus carpio L.).
Karakterisasi Enzim Komersial Siklodekstrin Glukanotransferase
Authors: Naiola Elidar , Widhyastuti Nunuk
Published: February 2022

The objective of this study is to investigate the characteristic of commercial enzyme Cyclodextrin Glucanotrasferase (CGTase) from Bacillus macerans. The CGTase was purified by dialysis, gel fitration and ion exchange chromatography. Study on Characterization of the enzyme showed that the hydrolytic activity of CGTase was 480 U/mg, the optimum tempetature and pH for enzyme reaction were 450C to 550C and pH 5.0 to 8.0, respectively. The CGTase was relatively stable after heating at 550C for 10 minutes, and maintained its activity at the pH 5.0 to 9.0. The enzyme activity was inhibited by the presence of 1 mM metal ions and cause CGTase lost approximately 40% of its activity. Among the metal ions it was found that Cu2+ was the strongest inhibitor, with presence of 1mM Cu2+ the residual activity of CGTase was 24.4%. Results of purification showed that Specific activities of the enzyme during purification were 269 U/mg (crude enzyme); 955 U/mg (dialysis); 481 U/mg (gel fitrations); and 544 U/mg (ion exchange chromatography).
Produksi Metabolit Utama (-)-Citrinin, pada Kultur Jamur Endofit Penicillium sp dari Tanaman Teh
Authors: Agusta Andria , Jamal Yuliasri
Published: February 2022

Endophytic fungi have been recognized as source of broad range biological active metabolites with high chemical structure diversity. The purpose of this research is to isolate and characterize major metabolite produce by the endophytic fungi Penicillium sp isolated from a tea plant. Cultivation of endophytic fungus Penicillium sp (AB2245443) in liquid medium PDB on a rotary shaker at 100 rpm, temperature 25 – 30oC for 7 days, produced a yellow metabolite. Separation of metabolite through chromatography technique and followed by chemical structure elucidation based on MS, IR, NMR spectra and published data showed that the yellow metabolite is (-)-citrinin.
Penentuan Pakan Rusa Bawean dengan Analisis Kotoran, di Pulau Bawean
Authors: Djuwantoko Djuwantoko , Purnomo Danang Wahyu
Published: February 2022

The research was conducted in the Bawean island, East Java, where endemic Bawean deer’s inhabited naturally. The objective was to assess what kind of plant species as food resources in natural habitat of Bawean deer. The most Bawean deer habitats particularly lowland forests, are under the greatest pressure. Logging and land conversion have caused dramatic decreases in the forest cover of Bawean island, mainly in lowland, and forest margins are progressively shifting towards higher elevations. In that conditions, therefore a management practices should be implemented soon, for improving deer habitat. This study was focused on availability of food resources in the natural habitat of Bawean deer. Using indirect methods in the field to assess the remaining of food resources, which was consumed by Bawean deer, and fecal analysis was executed for identifying food deer items. The result, there were many species of plants as a food resources including Imperata cylindrical (lalang), Pericampylus glaucus (ancucu), Caryota mitis (andudur), Discorea hispida (gadung), Symplocos adenophylla (kayu sape), Coelorhachis muricata (lampedung), Scheria hebecarpa (lanting-lantingan), Paspalum cunyugatum (lambu merah), Argyera mollis (rombok putih), Lygodium circinnatum (taliata), Nephrolepis hirsitula (rending-rendang), Tridax procumbens (kenci-kencian), Brachiaria distachya (kabak-kabakan alas), Frimbrisyllis dichotoma (lente-lentean). The availability of those food resources was affected by season i.e., dry and rainy season, and the feeding habit of Bawean deers can allow adapting to the habitat condition. Based on that figure the Bawean deers may have so many several of food items in their natural habitat.
Struktur Populasi Genetik Ayam Hutan Hijau Menggunakan Sekuen Hypervariable 1 D-Loop DNA Mitokondria
Authors: Arifin Zein M. Syamsul , Sulandari Sri
Published: February 2022

Thirty-three individuals from four populations of green junglefowl (Gallus varius) were collected throughout Indonesia: 14 from Central Java, 4 from Eastern Java, 3 from Sumbawa island and 12 from Flores island. The mitochondrial DNA D-loop the samples were analysed for sequence diversity. Twenty-five haplotypes with 28 polymorphic sites were identified within the first hypervariable-1 fragment (397 bp) of the D-loop. Fu’s Fs value was -25.96 (all samples, P=0), indicating high genetic diversity and population expansion; a conclusion supported by a neighbor–joining analysis of the haplotypes. Though sample size per population varied between 3 and 14, the Fs values for the four populations, between -2.20 and -10.76, were all significant (P=0). Only one haplotype was shared between three populations (Central Java, Sumbawa island, and Flores island) by a total of seven individuals. Within populations, only three haplotypes were shared by three individuals. The remaining haplotypes were unique, indicating genetic differentiation between populations as confirmed by significant pairwise Fst values at P=0.05 in four out of the six population pairs (except two pairs of Central Java & Sumbawa island and Flores island & Sumbawa island). The diversity pattern observed at the mtDNA of the green junglefowl provides a baseline which may help to understand the recent population expansions of domesticated chickens from multiple centres of domestications. Our observations also suggest careful interpretation of the results of genetic characterization may be needed when applied to the management and conservation of species like the green junglefowl. As in other multiparous birds and mammals with a short reproductive interval, green junglefowl may have established distinct genetic entities in metapopulations across its geographic distribution.
Kemampuan Mikroorganisme Efektif dalam Mengolah Limbah Cair Pabrik Spiritus
Authors: Lestari H. N. , Atmodjo P. Kianto , Sidharta B. R.
Published: February 2022

Proses produksi suatu industri senantiasa menghasilkan limbah yang harus diolah dengan baik agar tidak membahayakan lingkungan. Pabrik spiritus “X” di Yogyakarta telah mengolah limbah cairnya secara fikokimiawi, namun hasilnya masih kurang baik. Karakteristik limbah pabrik ini adalah berbentuk cair, berwarna hitam, bau, keruh, kandungan BOD 2.978 mg/l dan COD 103.433 mg l, sehingga nilainya sangat jauh di atas baku mutu (Kepmen: 03/men LH/I/1998). Untuk itu perlu dilakukan usaha-usaha mengolah lebih lanjut agar mutu limbah semakin mendekati baku mutu. Salah satu usahanya adalah mengolah lebih lanjut dengan metode biologi.
Efek Kurkumin terhadap Pertumbuhan dan Perkembangan Fetus Rattus norvegicus L.
Authors: Istriyati Istriyati
Published: February 2022

Curcumin which is isolated from Curcuma longa L. rhizome, has been used as a food additive, medicinal agent, cosmetic and fabric dye, whithout known its side effects. This research is to study the effects of curcumin on the structure of forelimb finger. Twenty virgin female rats, 2 month old, 150 g body weight were mated with fertile male rats. The present of vaginal plug or spermatozoa in the vagina were determined as the first day of pregnancy. Pregnant animals were devided into 4 groups of 5. Treatment were started from 10th to 17th day of pregnancy. The first 2 groups for control and vehicle only. Curcumin was dissolved in aquous 5% Tween 80. The second 2 groups were given curcumin at the dosage of 100 and 150 mg kg -1 bw. Rats were sacrificed at 18th day of pregnancy. Foetuses were dissected out, fixed in 10% formalin. Morphology of the foetuses were observed, forelimb were processed by paraffin method, and plantar paraffin section were made and used for histological observations and cell development of fingers. The results showed that curcumin at the dosage of 100 mg kg-1 body weight caused some foetuses dead, resorption of the embryo, hemorrhagi, unilateral phocomelia. Microscopical observations showed the treatment caused induced of nail formation, inhibition of indensity interdigity, and the increased of new blood vessel formation. It was concluded that the curcumin has no effect on the growth of foetuses. However it was affected the development of forelimb finger which is non dosage dependent.