bluuebunny/crossref_metadata_2025 huggingface dataset:
Climate Change Vulnerability of Marginal and Small Farmers in Nuapada District, Odisha
Authors: Jena Damodar , Dibiat Nibal , Parida Nishith Ranjan , Kumar Pani Saswat
Published: January 2022

This study attempts to measure the level of livelihood vulnerability of farmers to climate change in Nuapada. Both descriptive and inferential statistics were used based on primary and secondary data. The study found that marginal and small farmers in the study area have different differential livelihood vulnerability to climate change. The study has used composite approach in which seven dimensions including 34 indicators were studied. Composite of factors such as low level of education, lack of access to credit, lack of access to critical irrigation were associated with the relatively higher Livelihood Vulnerability Index (LVI) values. The multiple linear regression analysis revealed that seven socio-economic variables account for 44% of variation in livelihood vulnerability index; three variables among them viz. number of household income sources, landholding size and highest level of education in household were found to have significant impact on LVI. The findings of the study conclude that there is differential vulnerability to climate change in the same context which was mostly determined by various socioeconomic factors. Thus climate change related studies and policies (which mostly limit district as the measuring unit) must expand their scope to understand and act on differential vulnerabilities in the same district.
In vitro studies on anti-inflammatory, antioxidant and antihyperglycemic activities of potential probiotic Pediococcus acidilactici NCDC 252
Authors: Dhanda Shweta , Kumar Praveen , Choudhary Manjusha , Dhanda Suman
Published: January 2022

Probiotics are live microbes which positively influence the health when consumed in adequate amount. Lactic acid bacteria (LAB) are commonly used probiotics and are generally found in yogurt and fermented foods. They provide barrier for pathogens by secreting peptides and other metabolites. Pediococcus acidilactici NCDC 252 is a LAB of dairy origin with probiotic attributes. NCDC 252 was studied for in vitro anti-inflammatory, antioxidant and antihyperglycemic activities. Anti-inflammatory activity was studied by human red blood cell (HRBC) membrane stabilization method, protein (albumin) denaturation inhibitory activity and heat induced haemolysis. Antioxidant activity was evaluated by α, α-diphenyl-β- picrylhydrazyl (DPPH) radical and hydrogen peroxide (H2O2) scavenging assays. Alpha amylase inhibition assay was performed to examine antihyperglycemic effect. NCDC 252 exhibited potent anti-inflammatory but moderate antioxidant and antihyperglycemic activities as compared to control. NCDC 252 exhibited 65%, 70% and 49% membrane stabilization, protein denaturation and heat induced activity respectively. Scavenging effect was 45 % and 60% in H2O2 and DPPH assays respectively. Alpha amylase inhibition was 48 %. These results suggest therapeutic potential of NCDC 252 and open new avenues to treat disorders related to free radical generation such as inflammation and diabetes mellitus after in vivo evaluation of NCDC 252 to confirm its efficacy in animals.
Amelioration of Radiation-Induced DNA Damage and Immunosuppression by Tanacetum parthenium leaf extract and synthetic parthenolide in Swiss Albino Mice
Authors: Shivappa Pooja , Shetty Prashanth , Suchetha Kumari N. , Shetty Jayaram K. , Sharmila K.P.
Published: January 2022

Radiotherapy potentially offers protection from recurrence of tumor that also causes normal tissue damage and creates major concern. Another important factor is long-term immune suppression in patients treated with radiotherapy. Therefore, crucial need for the survival of surrounding normal cells of tumor by radiation‑protecting agents is the prime focus of this study. Aqueous extract (AE) and ethanolic extract (EE), Tanacetum parthenium extracts100 mg/kg each and parthenolide (PAR) 4mg/kg body weight were orally administered prior to sub-lethal radiation dose exposure. Mice were used for the evaluation of radiation-mediated chromosomal aberrations in bone marrow cells and DNA break by comet assay in the blood lymphocytes of mice. The pro-inflammatory levels were determined by cytokine estimations namely interleukin‑2, interferongamma and tumor necrosis factor-alpha performed in the liver homogenate using ELISA kits. Thus the results demonstrated ameliorating, radio-mitigating and immune-stimulatory efficacy of AE, EE and PAR against radiation ‑induced DNA damage and immunosuppression by regulating cytokine.
Phytocomponents and antioxidant activity in the methanol extract of seed lotus (Nelumbo Nucifera Gaernt.) from Viet Nam
Authors: Nguyen Thi Quynh Trang , Dang Thanh Long , Hoang Thi Kim Hong
Published: January 2022

In this study, we determined the phytocomponents using GC-MS and evaluated antioxidant activity by a 1,1-diphenyl-2-picrylhydrazyl (DPPH) assay of the methanolic extract of six lotus varieties seed in Viet Nam (N. Nucifera). GC-MS chromatogram of the methanolic extract of six lotus varieties seed in Viet Nam showed 27 peaks which indicate the presence of 27 phytochemical constituents. The major phytochemical constituent is methyl-alpha-dgalactopyranoside (66,86-78,69%) in all lotus varieties. Antioxidant activity of liquid extract and condensed extract was found as 8.20-15.67 mg/mL and 0.850-1.286 mg/mL in comparison with IC50 of ascorbic acid (3.2 μg/mL). Moreover, 50 % of the DPPH scavenging ability of liquid and condensed extract differed from each other. From obtained results, the seeds of six lotus varieties in Viet Nam were found to be potential for bioactive compounds and antioxidant activity.
ECO-Friendly approach in strengthening the different grain size particles by utilizing Sporsarcina pausterii NIOT1
Authors: Bose RajanBabu , Ganesan Nandhagopal , Jebarathnam Prince Prakash Jebakumar , Shunmugavel Ragumaran , Chokalingam Muthaiah Ramakritinan
Published: January 2022

A distinct grain size of 600, 425 and 212 μm sand column was developed to test the efficiency of bacterial strain Sporsarcina pausterii NIOT-1. The bacterial strain was effectively able to precipitate calcite crystals between the soil particles through enzymatic hydrolysis of urea which increases ammonium concentration to the maximum of 371.43 mM, 314.54 mM, 302.49 mM, EC of 98.81 ms/cm, 101.84 ms/cm, 101.34 ms/cm and pH of 8.80, 8.90, 8.80 respectively. The synthesized biomaterials have the maximum UCS of 2400 Mpa with 212 μm grain size followed by 425 and 600 μm with 2200 and 2100 Mpa. Scanning Electron Microscopy and XRD results justify the precipitation of CaCO3 bridging the sand particle. In the study, the maximum UCS attained with fine sand particle size and reduced with the increasing grain size. The current study observed an inverse relationship between grain size and strength. The current green synthesis study also attempts for the feasibility approach to reduce coastal erosion.
Effect of Process Parameters on the Adsorption of Chromium VI on a Packed Bed Column (PBC) using Vetiver (Vetiveria zizanioides)
Authors: Gururaj Pejavara Narayana , Ramalakshmi Kulathooran , Sujithra Sureshkumar , Shalini Ravichandran
Published: January 2022

The objective of this study is to evaluate the different process parameters on adsorption of chromium VI on a packed bed column using Vetiver (Vetiveria zizanioides) and to examine the effect of pH, Chemical Oxygen Demand (COD) and Biological Oxygen Demand (BOD) at a constant contact time of 10 minutes at a temperature of 40 ºC under two experimental conditions namely, tannery effluent with and without microwave treatment. The results revealed that microwave heating process had a higher impact on chromium (VI) adsorption than normal heating process. The pH values of microwave treated sample were found to be 6.65±0.65 when compared to normal heated sample where the pH was 4.62±0.72 when compared to the initial pH of effluent found to be 3.47±0.58. Further, a threefold reduction in BOD and COD values was observed in microwave treated vetiver sample which was around 86.73±1.43 and 107.90±2.82 mg/l respectively when compared to normal heated sample (250±1.45 and 200±2.65 mg/l respectively) and untreated effluent (780±2.53 and 920±3.86 mg/l respectively) which indicated the reduction of chromium VI present in the effluent water. It was also observed that the metal adsorption capacity of the vetiver powder and the adsorption characteristics were positively correlated with the FTIR and SEM analysis which confirmed the presence of chromium (VI) on the surface of vetiver.
Pengaruh Health Coaching terhadap Peningkatan Perilaku Pencegahan Tuberkulosis di Kabupaten Tegal
Authors: Evi Supriatun  , Insani Uswatun
Published: January 2022

Tuberkulosis merupakan penyakit infeksi nomor satu yang menyebabkan kematian tertinggi di dunia. Prevalensi penyakit tuberkulosis terbanyak berada di wilayah Asia dan Afrika. Penelitian ini bertujuan untuk mengetahui pengaruh dari health coaching terhadap perilaku pencegahan tuberkulosis dari pasien yang terdiagnosa tuberkulosis. Penelitian ini menggunakan desain Quasy Experiment pre-post test with control grup pada 68 responden yang terdiri dari kelompok perlakuan dan kontrol. Tahapan metode penelitian ini dimulai dari uji validitas dan realiabilitas kuesioner penelitian. Selanjutnya, kelompok intervensi akan diberikan health coaching sebagai salah satu strategi promosi kesehatan dalam keperawatan yang terbagi menjadi 4 sesi. Selanjutnya dilakukan uji univariat untuk mendeskripsikan variabel penelitian. Selain itu juga dilakukan uji bivariat yang terdiri dari independen t-test Â danÂ  pair t-test. Hasil independent t test menunjukkan rerata perilaku post intevention pencegahan tuberkulosis pada kelompok perlakuan lebih tinggi 8,88 dibandingkan dengan kelompok kontrol. Adanya pengaruh health coaching menunjukkan pengaruh yang bermakna untuk meningkatkan perilaku pencegahan tuberkulosis sesuai dari hasil pair t test dengan p value 0,000. Proses health coaching yang diberikan pada pasien tuberkulosis meliputi perilaku pencegahan secara fisik dan peningkatan daya tahan tubuh dengan menggunakan manajemen stress karena proses penerimaan pasien dalam menerima perubahan kondisi fisiknya. Dengan demikian dapat disimpulkan bahwa health coaching dapat meningkatkan perilaku pencegahan tuberkulosis secara bermakna pada pasien tuberkulosis yang sedang mengalami pengobatan.
Faktor Penghambat Pelayanan Kesehatan Rutin di Rumah Sakit saat Pandemi COVID-19
Authors: Intan Resvilani  , Inge Dhamanti
Published: January 2022

Pandemi COVID-19 mengakibatkan beberapa pelayanan kesehatan rutin di rumah sakit terhambat hingga tertunda. Penelitian ini bertujuan mengidentifikasi faktor yang menjadi penghambat diselenggarakannya pelayanan kesehatan rutin di rumah sakit di saat pandemi. Penelitian ini menggunakan metode scoping review. Penelurusan artikel dilakukan melalui database Science Direct, PubMed, dan Google Scholar. Kata kunci yang digunakan dalam penelitian adalah â€œregular health servicesâ€ AND â€œhospitalsâ€ AND â€œbarrierâ€ AND â€œCOVID-19â€ dan didapatkan total artikel sebanyak 66. Sebanyak 4 artikel yang sesuai kriteria inklusi dianalisis. Didapatkan studi dari beberapa rumah sakit di empat negara yang menunjukkan bahwa terdapat beberapa faktor penghambat yang mempengaruhi pelayanan kesehatan rutin. Faktor paling banyak ditemukan adalah faktor organisasi seperti kurangnya jumlah sumber daya manusia kesehatan, kurangnya adaptasi terhadap teknologi terbaru, kurangnya adaptasi kebijakan rumah sakit, dan terbatasnya sarana, prasarana, dan fasilitas rumah sakit. Diharapkan kepada rumah sakit agar tetap menjaga keberlangsungan pelayanan kesehatan rutin dengan mengevaluasi prioritas pelayanan, mencukupi kebutuhan terhadap tenaga kesehatan, fasilitas, sarana, dan prasarana.Â
Novel ultra-hard hexacarbon allotropes from first principles
Authors: Matar Samir F. , Solozhenko Vladimir L.
Published: January 2022

Novel ultra-hard hexacarbon C6 allotropes are proposed based on crystal chemistry rationale and geometry optimization onto ground state structures. Similar to diamond, the orthorhombic, tetragonal and trigonal C6 are cohesive networks of C4 tetrahedra illustrated by charge density projections exhibiting sp3-like carbon hybridization. All three allotropes are identified as mechanically (elastic constants) and dynamically (phonons) stable. The electronic band structures are characteristic of insulators with large band gaps of 4 to 5 eV, like diamond. From three different models evaluating Vickers hardness HV, all new carbon allotropes are identified as ultra-hard.
The Coupling between Voltage Profiles and Mechanical Deformations in LAGP Solid Electrolyte During Li Plating and Stripping
Authors: Ozdogru Bertan , Padwal Shubhankar , Bal Batuhan , Harimkar Sandip , Koohbor Behrad , Çapraz Ömer Özgür
Published: January 2022

Chemo-mechanical degradation at the solid electrolyte – Li metal electrode interface is a bottleneck to improve cycle life of all-solid state Li-metal batteries. In this study, in operando digital image correlation (DIC) measurements provided temporal and spatial resolution of the chemo-mechanical deformations in LAGP solid electrolyte during the symmetrical cell cycling. The increase in strains in the interphase layer was correlated with the overpotential. The sudden increase in strains coincides with the mechanical fracture in LAGP detected by Micro CT. This work highlights the mechanical deformations in LAGP / Li interface and its coupling with the electrochemical behavior of the battery.
EASY ENGLISH GRAMMAR
Authors: V Dr AnandaKumar
Published: January 2022

A tremendous effort has been made to bring out the grammar book, a simple one in the real sense of the title “Easy English Grammar” not only by giving simple definitions in simple sentences but also by quoting examples relevant to simple life situations with lofty thoughts.Being author of this book, I have tried my best level to bring out this book in a satisfactory manner out of my rich practical experience as a teacher of the college more than one decade in the field of English Language teaching working as an Assistant Professor of English. Thirty-seven exercises have been given in the book. Students do them sincerely.
ANALISIS REAKSI PASAR MODAL INDONESIA TERHADAP PENETAPAN UNDANG UNDANG CIPTA KERJA TAHUN 2020
Authors: Kristiastuti Francisca , Sari Utari Kartika
Published: January 2022

Undang Undang Cipta Kerja Tahun 2020 yang disahkan pada tanggal 5 Oktober 2020 dinilai memberikan dampak yang positif bagi pasar modal Indonesia. Kandungan informasi dalam penetapan Undang-Undang Cipta Kerja dimanfaatkan oleh investor dalam membuat keputusan investasi. Penelitian ini bertujuan untuk menganalisis reaksi pasar modal Indonesia yang dilakukan dengan cara mengamati pergerakan harga saham dan volume perdagangan saham. Pergerakan harga saham digunakan untuk melihat ada tidaknya abnormal return, sedangkan volume perdagangan digunakan untuk melihat ada tidaknya peningkatan trading volume activity. Penelitian ini menggunakan metode studi peristiwa dengan periode pengamatan selama 21 hari yang terdiri dari 10 hari sebelum dan 10 hari setelah pengumuman penetapan Undang Undang Cipta Kerja tahun 2020. Sampel penelitian adalah 14 perusahaan manufaktur yang sahamnya terdaftar dalam Indeks LQ 45 dengan kriteria tertentu. Hasil penelitian menunjukan bahwa tidak terjadi perbedaan pada rata-rata abnormal return antara sebelum dan sesudah pengumuman penetapan Undang Undang Cipta Kerja tahun 2020. Akan tetapi terdapat perbedaan pada rata-rata trading volume activity saat sebelum dan sesudah pengumuman penetapan Undang Undang Cipta Kerja tahun 2020.
PENGARUH KARAKTERISTIK PERUSAHAAN TERHADAP CSR PERUSAHAAN PERTAMBANGAN TERDAFTAR DI BEI PERIODE 2017-2019
Authors: Kinsey Vincent Yonathan , Santoso Urip
Published: January 2022

Tanggung jawab sosial merupakan kontribusi dari perusahaan sebagai tanggung jawab perusahaan kepada lingkungan masyarakat. Perusahaan perseroan terbatas yang sudah terbuka atau terdaftar dalam Bursa Efek Indonesia (BEI) memiliki kewajiban dalam mengungkapkan tanggung jawab sosial. Terutama pada jenis industri yang berhubungan dengan pengolahan sumber daya alam diwajibkan dalam UU nomor 4 tahun 2009 tentang pertambangan mineral dan batu bara pasal 108(1) melaksanakan tanggung jawab sosial. Pengungkapan informasi terdiri dari pengungkapan yang bersifat wajib dan bersifat sukarela. Informasi keuangan merupakan pengungkapan yang bersifat wajib. Keterbukaan informasi keuangan perusahaan ini memicu adanya penelitian yang berfokus kepada karakteristik perusahaan. Penelitian ini berfokus kepada pengaruh karakteristik perusahaan dengan dimensi ukuran perusahaan, ukuran anggota dewan direksi, dan kepemilikan manajerial. Penelitian ini dilakukan pada perusahaan pertambangan di Indonesia yang terdaftar di BEI periode 2017–2019. Hasil penelitian ini membuktikan bahwa total asset ukuran perusahaan, ukuran dewan direksi dan kepemilikan manajerial memiliki pengaruh secara parsial dalam pelaksanaan tanggung jawab sosial serta pengungkapannya. Pengujian secara simultan, ditemukan ukuran perusahaan, ukuran dewan direksi dan kepemilikan manajerial berpengaruh secara signifikan terhadap pengungkapan tanggung jawab sosial.
What Factors Drive the Banks Systemic Risk among South Asian Countries?
Authors: Mumtaz Raheel , Khan Quaisar Ijaz , Rehan Muhammad Farooq
Published: January 2022

Purpose: This study designs to examine the determinants (size, liquidity ratio, leverage ratio, deposit ratio, asset growth, net interest income ratio and return on asset ratio) of bank’s systemic risk. We use the data of listed commercial banks of the South Asian countries (Pakistan, Bangladesh, and India). Design/Methodology/Approach: The sample consists 30 banks from Bangladesh, 87 banks from India and 22 banks from Pakistan. This study covers the period from 2006 to 2018. The data is collected from the published annual reports of banks and stock exchanges of respective country. The panel data analysis is performed for the estimation of research models. Findings: The findings demonstrate that larger banks contribute lower in the systemic risk of banks. Additionally, highly liquid banks enhance the systemic risk of the banking system. Moreover, the banks with greater reliance on the deposits, net interest income and with high return on asset reduce the systemic risk contribution of the banks. Implications/Originality/Value: This study provides the justification to devise the banking policies like enhance the proportion of liquidity among assets, reliance on net interest income and promote the financing needs through deposits to limit the systemic risk contribution of the banking system.
Spowiedź antropologiczna. Z notatek PRL-owskiego etnografa – o niektórych kontekstach badań terenowych w Sudanie
Authors: Ząbek Maciej
Published: January 2022

This article is based on field notes from the author’s first independent ethnographic research, conducted in 1989–1991 in Sudan. Reflecting on the path that led him to anthropology during the last decade of the Polish People’s Republic, just before the politicaltransformation in Poland, he revisits his first ethnographic experience in the field, during student expeditions to Africa, focusing in particular on his long doctoral fieldworkin Sudan, spanning a year and a half. Examined years later, the text reveals facts, now salient but which then seemed obvious, or, for some reason, were not to be mentioned.The goal is to provide some insights into the history of Polish ethnography during the communist period.
Relacja, zobowiązanie, współpraca. Założenia i wyzwania badań etnograficznych wśród osób niewidomych
Authors: Pietrowiak Kamil
Published: January 2022

The article presents the main assumptions and conditions of collaboration between the author and the vision-impaired research participants over several years of ethnographic research (2011–2017). Adopting the perspective of philosophy of dialogue, the author follows different stages of rapport, focusing on mutual expectations and emotions, as well as relationship dynamics and its underlying conditions in general. The author’s long-term research was inspired by concepts developed by Luke Lassiter in his collaborative ethnography and by Anna Wyka in her social research through shared experience, both of which marked the author’s ethical and methodological choices, including invitation extended to research participants to comment on the research findings. The second part of the article is based on research participants’ impressions and reflections on their role, engagement and relationship with the researcher.
Szczęśliwy traf i tubylczy partner w badaniach terenowych. Z doświadczeń antropologa w USA i Ameryce Południowej Szczęśliwy traf i tubylczy partner w badaniach terenowych...
Authors: Posern-Zieliński Aleksander
Published: January 2022

The main theme of this essay is twofold: 1. the role of unforeseen, unplanned events and encounters that usually take place in the course of ethnographic fieldwork, and 2. the advantages and disadvantages of fieldwork collaboration with an indigenous partner/assistant, combining his/her competences in local matters with that in social sciences. These reflections are based on the author’s experiences from research carried out in the U.S., focusing on the Polish-American diaspora and from studies conducted among indigenous communities of the Andean America. The cases discussed are related to the situation in Ecuador and Bolivia, and above all Chile, where the author carried out his fieldwork in the area of Araucania, the native land of Mapuche.
Wdowy, polityczki, feministki i ja. Esej o antropologii na rogu ulicy
Authors: Bloch Natalia
Published: January 2022

In the article, I tell the stories of a few female research partners of mine, who accompanied me during ethnographic fieldwork on forced displacement at the UNESCO World Heritage site in Hampi, India. These women differed in every respect: their ethnic origin and caste, religious affiliation, age, marriage status, social position, level of education, and person- ality. What they had in common was their agency in challenging social expectations and an extraordinary capability to be resilient. I scrutinize my close, albeit not always easy relationships with them, the process of rapport-building in the field, the power relations inscribed in ethnographic research and my own changing positionality vis-a-vis women from my street in Hampi.
Niematerialny świat Dul-dul at. O procesie zanurzania w świat Innych, o relacjach, ludziach i innych bytach
Authors: Pietrowiak Sylwia
Published: January 2022

This essay is a non-linear record of memories from the author’s anthropological field- work in southern Kyrgyzstan. The research concerns a place called Dul-dul at, a site of petroglyphs with a dominant motif of animals interpreted as a pair of horses. The area at the foot of the rock with petroglyphs is also a pilgrimage and ritual site for healing and spiritual practices. The narrative of memories shows the transformation not only of the place of research, but also of the researcher: between the first stay (in 2006) to the last (in 2019). Subsequent studies reveal the dependencies of people involved in social rela- tions on the material and non-material world of Dul-dul at. Consecutive memories reveal layers of knowledge and ignorance, and how the researcher penetrates the community of the Others and the way they perceive the world.
Tworzenie wspólnego ciała, czyli o przetwarzaniu terenu wśród boliwijskich Moré
Authors: Chyc Paweł
Published: January 2022

The aim of this anthropological essay is to present the emotional and intellectual processes accompanying me over the years of field research among the Bolivian Moré, who belong to the Chapacura language family. The narrative structure is twofold: addressing both topics and issues that motivated me intellectually to do the research, and the attitudes of Moré themselves, as well as conceptual categories around which their narratives seem to focus. Some passages of this essay take a more analytical form, as I focus on the impor- tance of unpredictable events, the context, and the transformation of field experience over time during the research process. I conclude that both sides of the fieldwork encounter face the task of getting to know the Other. Each gets to know the Other in a particular way through conceptual categories and ways of acting that result from their current way of being in the world.
POTENTIAL DISGUISING ATTACK VECTORS ON SECURITY OPERATION CENTERS AND SIEM SYSTEMS
Authors: Drahuntsov Roman , Rabchun Dmytro
Published: January 2022

In this article we highlight several potential vectors of attacks that can be carried out on a monitoring capacities powered by SOC SIEM using its common features and misconfigurations. Widely spread problems like excessive amounts of false positive alerts or not absolutely accurate configuration of the correlation rules may lead to situation where an attacker is able to trigger an undesired state of the monitoring system. We’ve find three potential vectors for evasion the SIEM powered SOCs monitoring. The first vector grounds on mechanisms used to collect event data – log collectors: the malfunctioning SIEM state can be achieved with generating and submitting the bogus event data to the processing party like SIEM. Fake data flow may cause generation of mistaken alerts which can confuse the analytics stuff. The second vector employs some of the attacker’s knowledge about actual SIEM configuration – exploitation of correlation rule flaws. Taking into account the fact that correlation rules are mostly hand-written, they are prone to some logic flaws – certain detection rules may not be triggered by all of the malicious attack indicators. An attacker with knowledge about that feature may fulfill the unrecorded conditions and trick the SIEM to treat the attack flow as benign activity. The last researched vector is based on redundantly sensitive detection rules which produce a lot of false positive alarms but are not removed. An attacker may trigger the malfunctioning alarm continuously to distract the analytics stuff and perform its actions under the cover of noise. Those discussed vectors are derived from analysis of the actual SIEM installations and SOC processes used as best practices. We have no actual indicators that those attacks are carried out “in wild” at the moment of issuing of this article, but it is highly probable that those tactics may be used in the future. The purpose of this research is to highlight the possible risks for the security operation centers connected with actual processes and practices used in industry and to develop the remediation strategy in perspective.
Analisis Tingkat Kepuasan Masyarakat Terhadap Program Inovasi Pembangunan dan Pemberdayaan Kewilayahan (PIPPK) (Studi Kasus: RT. 04 Kelurahan Sukawarna, Kecamatan Sukajadi, Bandung)
Authors: Christina Raden Roro , Hermawan Melina , - Novi , Arief S. Moch Sofyan , Wijaya Khaterine Santika
Published: January 2022

Belum adanya evaluasi terkait tingkat kepuasan masyarakat di RT. 04 Kelurahan Sukawarna, Kecamatan Sukajadi, Bandung terhadap PIPPK pembangunan jalan lingkungan. Penelitian ini bertujuan mengetahui tingkat kepuasan masyarakat terhadap Program Inovasi Pembangunan dan Pemberdayaan Kewilayahan (PIPPK) di Kelurahan Sukawarna. Pengumpulan data dengan teknik sampling jenuh kepada 41 kepala keluarga di RT 04. Variabel penelitian disusun menggunakan metode Kanzei yang disesuaikan dengan variabel Indeks Kepuasan Masyarakat (IKM) Kepmen PAN nomor 25 tahun 2004. Hasil pengukuran diperoleh unsur pelayanan “Kualitas jalan yang dirasakan dari pembangunan jalan lingkungan” memperoleh nilai rata-rata kepuasan yang terendah (ranking 1) dengan nilai rata-rata unsur pelayanan sebesar 2,50 dari skala 1 sampai dengan 4, yang menunjukkan warga cukup puas terhadap pembangunan jalan lingkungan yang dilakukan oleh PIPPK.  Secara keseluruhan masyarakat menyatakan puas terhadap program pembangunan jalan lingkungan dengan rata-rata 2,940 mutu pelayanan B, Warga menilai penarikan biaya yang didasari pemberdayaan masyarakt masih dalam batas kewajaran. Sebaiknya pemerintah dapat memfasilitasi pembangunan jalan menggunakan baja beton agar memberikan kualitas yang baik, daya tahan kualitas yang lama, masyarakat merasa puas. Untuk memenuhi prinsip partisipasi masyarakat, sebaiknya masyarakat  tetap dilibatkan dalam perencanaan pembangunan melalui Focus Group Discussion.

 

Kata Kunci : PIPPK, Kelurahan Sukawarna, Kanzei
Examining Experience Economy Dimensions on Virtual Tour Satisfaction and Destination Visit Intention
Authors: Panduputri Taffy Ukhtia , Novani Santi
Published: January 2022

Virtual tour is an emerging phenomenon in the tourism industry. During the COVID-19 pandemic, this technology is accelerated and utilized as media to market tourism sites that are mainly closed to contain the Coronavirus spread. This study aims to investigate the relationship between virtual tour experience economy dimensions and outcome of the experience, particularly satisfaction, followed by intention to visit the actual site. Utilizing the PLS-SEM method, this research found that three of the four experience constructs, namely entertainment, esthetics, and escapism positively relate to satisfaction, which leads to participants’ intention to visit the destinations. This finding further supports the role of virtual tour as a strategy to market tourism destinations, as well as emphasizing the significance of immersion and entertainment effect in a virtual content. The result can be of assistance to virtual tour providers or tourism marketers in understanding customer perspective.

 

Keywords: experience economy, satisfaction, tourism, visit intention, virtual tour
THE INFLUENCE OF MOLYBDENUM DISULPHIDE-FRICTION MODIFIER (FM) ADDITIVE INCREMENT ON THE FRICTION AND WEAR PREVENTION BEHAVIOUR OF HVI 60 BASE OIL
Authors: Hanifuddin Muhammad , Sofyan Nofrijon
Published: January 2022

Friction will always be found in a mechanical system. It is therefore necessary to minimize friction, so it becomes a more effi cient use of energy. This paper discusses the infl uence of MoS2 friction modifier (FM) additive in the form of powder with two different mesh sizes, i.e. 90 nm and 1.5 um, on the friction and wear characteristic of HVI 60 base oil. The variation of MoS2 were 0,05%; 0,1%; 0,5% weight whereas MoS2 1.5 um were 0,05%; 0,1%; 0,5%; 1% and 2% weight. MoS2 additive 90 nm was mixed with base oil and stirred with magnetic stirrer for 60 minutes at 50oC and homogenized in an ultrasonic homogenizer for 1 hour. For the MoS2 1.5 um, the additive was mixed with base oil and stirred with magnetic stirrer for 60 minutes at 75oC without using an ultrasonic homogenizer. Friction and wear characteristics of these mixtures were tested using four-ball and SRV test-rig. The wear scars were analyzed by using a scanning electron microscope (SEM). The results of the tests showed that the addition of 0.1% weight MoS2 additive, both in 90 nm and 1.5 um, resulted in an optimum increase in friction and wear characteristic of 23% and 11%, respectively. Observation on the wear scar showed that adhesive and abrasive wear mechanisms were involved in the wear process. The results of this research could be applied in the production of lubricating oils that can improve engine performance. Keywords: additive, friction, wear, molybdenum disulfi de, four-ball
OPTIMIZATION OF PHENOLIC WASTES TREATMENT IN ARTIFICIAL PRODUCED WATER BY PSEUDOMONAS AERUGINOSA
Authors: Syafrizal Syafrizal
Published: January 2022

The purpose of this research is to obtain the optimum condition of phenol biodegradation in arti􀂿 cially produced water using Pseudomonas aeruginosa. The screening of medium in the highest phenol degradation at 99.85% in medium M5, followed by M1, M4, M3, and M2, at 99.83%, 28.47%, 27.64%, and 0.09%, respectively, during the 24 hours incubation time. Medium M5 and M1 are relatively expensive if applied in the 􀂿 eld, thus optimization of incubation time, temperature, pH, and the adding of oil is needed in the treatment parameters affecting the phenol biodegradation process using an easy and cheap medium, M4. This research resulted in phenol biodegradation percentage at optimum condition for 2 days incubation, pH 7, and temperature 30°C, was 99.98%.The adding of oil at optimum condition: 100 mg/L could degrade phenol waste to 28.01%.
TRIBOLOGICAL PROPERTIES OF MINERAL BASE OILS WITH TUNGSTEN DISULPHIDE?(WS2) NANOPARTICLES IN BOUNDARY LUBRICATION CONDITIONS
Authors: Widodo Setyo , Hanifuddin M , Karina Rona Malam
Published: January 2022

Friction affects the efficiency of a mechanical system. This paper discusses the influence of Tungsten Disulphide (WS2) as a friction modifier (FM). Friction and wear characteristics of base oil as a result of the addition of 0.1% and 0.5 % weight of WS2 were studied. WS2 nanoparticles were mixed with base oil using magnetic stirrer at 50oC for 60 minutes, then were homogenized in an ultrasonic homogenizer for 1 hour. Friction and wear characteristic of these mixtures were tested using four-ball and HFRR test-rig. The results show that the addition of both 0.1% and 0.5% WS2 nanoparticles increased by around 40% the anti-wear characteristic of mineral base oil group I and 12% for other groups of base oils. The increase in friction coefficients was in a range of 7.5% to 35% as a result of the addition of additives.
DESIGN OF LUBRICANTS FOR CNG-CONVERTED GASOLINE ENGINES
Authors: Widodo Setyo , Hanifuddin Muhammad , Fibre Milda
Published: January 2022

The objective of this study is to develop a lubricant formula for the gasoline engine that has been converted to compressed natural gas (CNG-fueled). The lubricant specification is SAE 15W40 API SL. This study was conducted in six stages, namely; i). lubricant formulation, ii). laboratory scale production, iii). Laboratory analysis, iv). pilot scale production and laboratory analysis, v). test performance through bench test or a road test, vi). final data analysis and evaluation. A laboratory test of physical and chemical properties of lubricants refers to the Indonesian National Standard (SNI), followed by road tests up to the mileage of 10,000 kilometers. The result showed that the lubricant formula obtained can work well to 10,000 kilometers.
POLLEN RECORD OF THE PERMIAN MARINE SEDIMENTS FROM WEST TIMOR
Authors: Lelono Eko Budi
Published: January 2022

This is the fi rst publication to present palynological study on the Permian marine sediments of West Timor. This is aimed to evaluate its palynomorph content. Similar studies have been performed on the Permian sediments which mostly focus on non-marine sediments. 15 surface samples were collected from Lilana river outcrop which comprises the alternation of calcareous shale and sandstone. This outcrop is assumed to represent some parts of Bisane Formation. Standard preparation methods were employed to extract palynomorphs including acid maceration and oxidation. This study applies quantitative method which requires counting of palynomorphs in each sample. This study provides low to moderate pollen recovery which mostly consists of striate and non-striate bisaccates as well as trilete monosaccates. The age restricted taxa appearing in the non-marine sediments also present in the studied samples to mark Permian age such as Protohaploxypinus samoilovichi, Lunatisporites pellucidus, Falcisporites australis, Plicatipollenites malabarensis and Cannanoropollis janakii. On the other hand, common occurrence of marine dinofl agellates of Dapsilidium langii and Veryhachim reductum combined with abundant macrofossil of chrinoids confi rm a shallow marine paleoenvironment. Common green algae of Tasmanites sp. is a firmed evidence for the appearance of potential source rock of hydrocarbon within the Permian shallow marine sediments of West Timor.
WELL AND OUTCROP CORRELATION IN THE EASTERN PART OF AKIMEUGAH BASIN, PAPUA: MESOZOIC PLAY POTENTIAL
Authors: Fakhruddin Rakhmat , Ramli Taufi k , Saleh Hanif Mersil
Published: January 2022

Mesozoic sediments are the main objective for hydrocarbon exploration in the eastern part of Akimeugah Basin, Papua. However, little information is currently available on paleogeography and subsurface distribution of the Mesozoic rock unit. This study analyzed Mesozoic rock unit from outcrops at Wamena and surrounding area to wells data in the eastern part of Akimeugah Basin, Papua. Outcrop and well correlation was made to interpret paleogeography of Mesozoic unit. This study was using existin 2D seismic and passive seismic tomography data to determine the distribution of Mesozoic rock unit in the subsurface and its hydrocarbon potential. The Mesozoic rock unit in the eastern part of Akimeugah Basin is divided into four formations based on their lithological characteristic. Respectively from old to young, Kopai, Woniwogi, Piniya and Ekmai Formation. The depositional environment of Mesozoic rock unit in the southern part of the study area is shore/tidal to shelf and basin fl oor in the northern part. Three Mesozoic potential plays in the studied area are divided into 1) Central Range Mountains thrust-fold belt play, 2) Akimeugah low land thrust-fold belt play and 3) Tanah Merah pinch-out play. The results presented in this paper are expected to be a guide for further hydrocarbon exploration in the study area. Mesozoic sediments are the main objective for hydrocarbon exploration in the eastern part of Akimeugah Basin, Papua. However, little information is currently available on paleogeography and subsurface distribution of the Mesozoic rock unit. This study analyzed Mesozoic rock unit from outcropsat Wamena and surrounding area to wells data in the eastern part of Akimeugah Basin, Papua. Outcrop and well correlation was made to interpret paleogeography of Mesozoic unit. This study was using existing 2D seismic and passive seismic tomography data to determine the distribution of Mesozoic rock unit in the subsurface and its hydrocarbon potential. The Mesozoic rock unit in the eastern part of Akimeugah Basin is divided into four formations based on their lithological characteristic. Respectively from old to young, Kopai, Woniwogi, Piniya and Ekmai Formation. The depositional environment of Mesozoic rock unit in the southern part of the study area is shore/tidal to shelf and basin fl oor in the northern part. Three Mesozoic potential plays in the studied area are divided into 1) Central Range Mountains thrust-fold belt
CATALYTIC PERFORMANCE OF ZSM-5 ZEOLITE IN HEAVY HYDROCARBON CATALYTIC CRACKING: A REVIEW
Authors: Ulfiati Ratu
Published: January 2022

Low quality heavy oils and residues, which are subsequently obtained by processing heavy crudes, are considered as alternate suitable source for transportation fuels, energy and petrochemicals. ZSM-5 zeolite with high Si/Al ratio and modified with phosphorous and La has showed not only high selectivity to light olefins but also high hydrothermal stability for the steam catalytic cracking of naphtha. Kaolin is promising natural resource as raw material to synthesis of ZSM-5 zeolite. The utilization of acid catalysts with large pore size or hierarchically structured and high hydrothermal stability to resist the severity of the steam catalytic cracking (or thermal and catalytic cracking) operation conditions to maximize the olefin production.
THE PREFERENTIAL WELD CORROSION OF X65 CARBON STEEL PIPELINE UNDER CO2 ENVIRONMENT
Authors: Nofrizal Nofrizal
Published: January 2022

Preferential weld corrosion (PWC) is a severe corrosion form of attack found in pipeline weldments in oil and gas industries. PWC occurs when the corrosion rate of the weld metal (WM) and heat affected zone (HAZ) is higher than the parent metal (PM). PWC was generated by galvanic corrosion mechanism due to dissimilarities in the composition and microstructure of the metal in the three weld regions.The aim of this research is to study the effect of flow rate on preferential weld corrosion (PWC) in X65 high strength pipeline steel using submerged jet impingement by investigating the mechanism of PWC on a weldment in artificial seawater saturated with carbon dioxide at 1 bar. A novel submerged jet impingement apparatus that consist of 3 rings (outer, inner and centre) was designed so that the parent material, heat affected zone and weld metal could be analysed in a high shear stress environment. Corrosion experiments were performed with X65 pipeline steel under no flow and flowing condition at 10 m/s at 30oC and pH4. The galvanic current characteristic between the weldment regions was recorded using a zero-resistance ammeter, and the self-corrosion was analysed by using linear polarisation resistance measurements. Total corrosion rates were calculated from the sum of the galvanic and self-corrosion contributions. The morphology, structure, chemical on the surface of X65 after corrosion process was investigated by means of scanning electron microscopy (SEM) and focus ion beam (FIB) to examine the corrosion product that form in brine containing dissolved carbon dioxide.In a no-flow condition, the result shows that the galvanic characteristics on all weldments were similar and the WM is cathodic and protected in comparison with the HAZ and PM. In flowing condition, the estimated flow rates associated with the different positions on the target vary depending on either (a) PM and HAZ or (b) the WM. The effects of target flow rate on WM have a similar trend, but the overall corrosion rates are greater due to PWC. The result of surface analysis after corrosion process showing that removal of hardened layer and subsurface cracking were causes of enhanced degradation.
SOUTH NATUNA BASIN RECONFIGURATION BASED ON RECENT SEISMIC AND GRAVITY SURVEYS
Authors: Padmawidjaja Tatang , Iskandar Yusuf , Wibowo Andy Setyo , Lelono Eko Budi
Published: January 2022

The Geological Survey Center has conducted a seismic survey in the southern Natuna Sea region to obtain geological information below relating to the potential energy resources of the area. The area research is located in the western part and outside the Singkawang Basin area (BG, 2008), which is separated by a Metamorf ridge. 2D seismic survey results show 3 different rock units, namely shallow marine sedimentary rocks, tertiary sedimentary rocks and pre-Tertiary sedimentary rocks, with pre-Tertiary sediment depths of less than 2000 ms. Interpretation of seismic data shows the pattern of graben structures that form sub-basins. strong refl ectors seen in seismic record can distinguish pre-rift, syn-rift and post-rift deposits. There are 2 wells, namely Datuk 1X and Ambu 1X. Datuk 1X has a depth of 1187 meters, and The Ambu 1X has a depth of 880 meters that is crossed by a seismic line. Both drilling has obtained Tertiary aged sandstone that covers pre-Tertiary bedrock.Gravity anomaly data in the seismic region shows anomaly values between 10 to 54 mgal which form the anomaly ridge and basinThe ridge anomaly extends as an anticline, while the anomaly basin also rises to form a syncline. Sincline and anticline trending southwest - southeast, with widening and narrowing patterns.Based on its geological model, the depth of the sediment is relatively shallow between 1500 to 2000 meters. While the integration between seismic, gravity and geomagnetic data shows the discovery of new basins that have never been described before.Finally, the integration of seismic and gravity data succeed discovers a new basin which has never been delineated before. In addition, it shows the continuity of the regional geological structure spanning from the studied area to the West Natuna Basin which is well known to be rich in hydrocarbon potential.
The Effect of Carbon Steel Pipeline Deterioration to Water Injection Quality and Pressure Drop in Tanjung Waterflood Injection Plant.
Authors: Aldila Migel , Febrianto Iwan , Saputra Akhmad Sudirman , Timur M.S Purnama , Purwatiningsih Ninik
Published: January 2022

In Tanjung, South Kalimantan, PT Pertamina EP (PEP) use secondary recovery (waterflood injection) for its technique for oil lifting. Low permeability reservoir condition make quality of water injection must be comply with low permeability reservoir requirement and the pressure injection must be around 1400 psig. In the common PEP injection plant, carbon steel pipeline is still used. Flakes accumulation and trapped oil could occur along with the deterioration of carbon steel pipeline. This matter can make the quality of requirements of injection water become worst. There were four data were analyzed; Oil content, TSS (Total Suspended Solid), Turbidity and Total Iron. The sample was taken at discharge pump and one of the injections well during 6 months.  Averagely the result of value of total iron, turbidity and oil content in injection well are bigger than discharge pump while TSS has little fluctuation. In conclusion, deterioration carbon steel pipeline has effect to reduce quality water injection become worst and effect of roughness of pipeline due to carbon steel deterioration can make the pressure drop is higher in accordance with the length.
The Effect of Regular and Long Cyclic Steam Stimulation Method on Oil Production Performance of RUA Field in Central Sumatera
Authors: Permatasari Intan , Erfando Tomi , Satria Muhammad Yogi , Hardiyanto Hardiyanto , Astsauri Tengku Mohammad Sofyan
Published: January 2022

RUA field is classified into heavy oil reservoir type due to the high viscosity value and low API degree . This causes the RUA field can not be produced conventionally. the solution of this problem is to apply steam or thermal injection into reservoir which could reduce the viscosity of the heavy oil (Bera Babadagli, 2015). One of the best EOR methods that has been proven to overcome this issue is using CSS method (Suranto et al., 2020). During the production period, the CSS process can affect the viscosity of the oil by increasing the temperature of the oil in the reservoir. In one production well, cyclic work are applied periodically, its called repeated cyclic (J. J. Sheng, 2013). This is because time of reservoir temperature stays above the baseline temperature reservoir shortly. Even though the cyclic already done repeatedly, there is still a decrease of oil production, different peak reservoir temperatures, and found the possibility of pump damage after the cycle job which led to the need for analysis on these issues. The analysis was performed by looking at the historical production data, historical reservoir temperature data, and production pump work data in the RUA field. After a production history data that reprsentative analyzed, it was found that teh production after cyclic there is increasing, and there is also a decline from the previous cyclic production. Based on the results of the production analysis, it was found that 53.24% of the production wells in the RUA field were already in the ramp down stage and 46.75% were already in the ramp-up stage. Meanwhile, the average HET for regular cyclic jobs is 3-4 months and 5-6 months for long cyclic jobs. And from the pump work data, only 3 wells were damaged. This suggests that cyclic stimulation is completely safe to be performed in this field.