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All Journal JURNAL TEKNOLOGI LINGKUNGAN FOKUS : Kajian Bimbingan dan Konseling dalam Pendidikan Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics
Hidayanti, Nuril
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Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Education Electrical & Electronics Engineering Environmental Science Health Professions Materials Science & Nanotechnology Public Health Social Sciences Other

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MEKANISME FISIOLOGIS TUMBUHAN HIPERAKUMULATOR LOGAM BERAT = Heavy Metal Hyperaccumulator Plant Physiology Mechanism Hidayanti, Nuril
Jurnal Teknologi Lingkungan Vol. 14 No. 2 (2013)
Publisher : Center for Environmental Technology - Agency for Assessment and Application of Technology

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (291.277 KB) | DOI: 10.29122/jtl.v14i2.1424

Abstract

One approach to remediate toxic metal pollutants is phytoextraction using hyperaccumulator plants. These plant species are able to accumulate high concentrations of metal ions without suffering fromyield reduction as a result of metal toxicity. Physiological studies showed that metal hyperaccumulation in particular plant species is regulated by multiple pathways and genes controlling metal uptake,accumulation, and tolerance. Currently, research and development on hyperaccumulator plants are progressing in at least seven focus areas: (1) Improving plant root system for higher penetration capacity and more efficient pollutant extraction from heterogeneous contaminated soils, (2) Altering plant’s rhizosphere for secreting various enzymes to enhance extraction, (3) Improving short distance transport systems for nutrients and toxic elements in roots (4) Enhancing mobility of metalsfrom roots up to shoots. (5) Improving long-distance transport of metals, (6) Maximizing capacity of physical sinks such as subcellular vacuoles and epidermal cells and (7) hypertolerance mechanismsto resist the cytotoxic effects of the accumulated metals. Current trends in phytoremediation research are focus at genetic and molecular level. Research objectives in this area include: understanding bio-pathways involved in contaminant degradation and sequestration, identifying specific genes involved in phytoremediation processes, investigating cell signaling pathways that affect genetic expression of plant enzymes, analyzing and identifying root exudates components and chemical fingerprinting to assess phytoremediation effects at specific sites. Keywords: hyperaccumulator, phytoextraction, phytoremediation, heavy metalsAbstrakSalah satu pendekatan untuk memulihkan polutan logam beracun adalah phytoextraction menggunakan tanaman hiperakumulator . Jenis tanaman ini mampu mengakumulasi konsentrasitinggi ion logam tanpa mengalami penurunan hasil akibat keracunan logam. Studi fisiologis menunjukkan bahwa hyperaccumulator logam dalam spesies tanaman tertentu diatur oleh beberapajalur dan gen mengendalikan serapan, akumulasi , dan toleransi logam. Saat ini, penelitian dan pengembangan tanaman hiperakumulator mengalami kemajuan dalam setidaknya tujuh bidangfokus: (1) Meningkatkan sistem perakaran tanaman untuk kapasitas penetrasi yang lebih tinggi dan ekstraksi polutan lebih efisien dari tanah yang terkontaminasi, (2) Mengubah rizosfir tanaman untukmengekstrak berbagai enzim guna meningkatkan ekstraksi, (3) Meningkatkan sistem transportasi jarak pendek untuk nutrisi dan unsur-unsur beracun dalam akar, (4) Meningkatkan mobilitas logamdari akar hingga pucuk, (5) Meningkatkan transportasi jarak jauh dari logam, (6) Memaksimalkan kapasitas tenggelam fisik seperti vakuola subselular, sel-sel epidermis, dan (7) Mekanisme hypertolerance untuk melawan efek sitotoksik dari logam akumulasi . Saat ini kecenderungan dalam penelitian fitoremediasi adalah fokus pada tingkat genetik dan molekuler. Tujuan penelitian di bidangini meliputi: pemahaman bio - jalur yang terlibat dalam degradasi kontaminan dan penyerapan , mengidentifikasi gen tertentu yang terlibat dalam proses fitoremediasi , menyelidiki jalur sinyal selyang mempengaruhi ekspresi genetik dari enzim tanaman , menganalisis dan mengidentifikasi eksudat akar komponen dan sidik jari kimia untuk menilai fitoremediasi efek pada situs tertentuKata Kunci: hiperakumulator, phytoextraction, fitoremediasi, logam berat
Improving Heart Rate Measurement Accuracy by Reducing Artifact Noise from Finger Sensors Using Digital Filters Maghfiroh, Anita Miftahul; Soetjiatie, Liliek; Irianto, Bambang Guruh; Triwiyanto , Triwiyanto; Hidayanti, Nuril; Rizal, Achmad
Indonesian Journal of Electronics, Electromedical Engineering, and Medical Informatics Vol. 4 No. 2 (2022): May
Publisher : Jurusan Teknik Elektromedik, Politeknik Kesehatan Kemenkes Surabaya, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.35882/ijeeemi.v4i2.144

Abstract

Heart rate is an important indicator in the health sector that can be used as an effective and rapid evaluation to determine the health status of the body. Motion or noise artifacts, power line interference, low amplitude PPG, and signal noise are all issues that might arise when measuring heart rate. This study aims to develop a digital filter that reduces noise artifacts on the finger sensor to improve heart rate measurement accuracy. Adaptive LMS and Butterworth are the two types of digital filters used in this research. In this study, data were collected from the patient while he or she was calm and moving around. In this research, the Nellcor finger sensor was employed to assess the blood flow in the fingers. The heart rate sensor will detect any changes in heart rate, and the measurement results will be presented on a personal computer (PC) as signals and heart rate values. The results of this investigation showed that utilizing an adaptive LMS filter and a Butterworth low pass filter with a cut-off frequency of 6Hz, order 4, and a sampling frequency of 1000Hz, with the Butterworth filter producing the least error value of 7.57 and adaptive LMS maximum error value of 27.65 as predicted by the researcher to eliminate noise artifacts. This research could be applied to other healthcare equipment systems that are being monitored to increase patient measurement accuracy.
DAMPAK HUBUNGAN SOSIAL PESERTA DIDIK YANG MENJADI KORBAN TINDAKAN BULLYING VERBAL DI SMP NEGERI 29 SAMARINDA Sarah, Alfira; Muslifar, Rury; Widyatmoko, Wahyu; Hidayanti, Nuril
FOKUS : Kajian Bimbingan dan Konseling dalam Pendidikan Vol. 9 No. 1 (2026): Vol 9, No 1 Januari 2026
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/fokus.v9i1.28641

Abstract

This study was initiated in response to a problem identified at SMP Negeri 29 Samarinda, East Kalimantan, where several students who were victims of verbal bullying experienced difficulties in establishing social relationships with their classmates. At this developmental stage, students should ideally be able to interact with peers to build meaningful relationships that may benefit them in the future. The purpose of this research is to explore the social impact experienced by students who are victims of verbal bullying. The study uses a qualitative descriptive approach. The primary informants consist of three female students, aged 14 years, from grades 9A, 9B, and 9C. Data collection was conducted through interviews involving the Guidance and Counseling teacher, homeroom teachers, class representatives, and the students themselves, along with observation and documentation. The data analysis technique employed an interactive model consisting of four stages: data reduction, data condensation, data display, and conclusion drawing. The research findings contained four themes, namely communication, peer social relations, social isolation, and cooperation. Keywords: Verbal Bullying, Social Relationships
EFEKTIVITAS KONSELING KELOMPOK BERBASIS REBT UNTUK MENINGKATKAN ADVERSITY QUOTIENT PADA SISWA Jovita Emmanuela Ragil, Adinda; Sari Pratiwi, Yashinta; Sona, Dwi; Hidayanti, Nuril
FOKUS : Kajian Bimbingan dan Konseling dalam Pendidikan Vol. 9 No. 2 (2026): Vol 9, No 2 Maret 2026
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/fokus.v9i2.29758

Abstract

This study was conducted based on data obtained from a preliminary study involving eleventh-grade students at SMA Negeri 2 Bontang, which indicated a low level of adversity quotient. The findings revealed that students tended to give up easily when facing difficulties in learning or social situations, felt unable to control challenging circumstances, were reluctant to take responsibility for their problems, and experienced a decline in learning motivation when confronted with academic pressure or failure. The research employed a quantitative experimental design, specifically a nonequivalent control group design. The population consisted of 30 eleventh-grade students identified as having a low adversity quotient, with a sample of six students selected based on purposive non-probability sampling techniques. The sample was divided into two groups: an experimental group and a control group. The group counseling sessions were conducted five times, applying the Rational Emotive Behavior Therapy (REBT) approach for the experimental group and conventional group counseling for the control group. The pre-test scores showed an average of 31.66 for the experimental group and 29.33 for the control group. After the counseling sessions, the post-test average scores increased to 72.33 for the experimental group and 63.33 for the control group, indicating an average score increase of 40.67 and 34.00, respectively. The results demonstrated a significant improvement in students’ adversity quotient. Therefore, it can be concluded that REBT-based group counseling is effective in enhancing the adversity quotient of eleventh-grade students at SMA Negeri 2 Bontang in the 2024/2025 academic year.
- PENERAPAN TEKNIK MIND MAPPING DALAM LAYANAN BIMBINGAN KLASIKAL UNTUK MENINGKATKAN PERENCANAAN KARIR SISWA KELAS VIII SMP NEGERI 29 SAMARINDA Ekani, Luly; Widyatmoko, Wahyu; Muslifar, Rury; Hidayanti, Nuril
FOKUS : Kajian Bimbingan dan Konseling dalam Pendidikan Vol. 9 No. 2 (2026): Vol 9, No 2 Maret 2026
Publisher : IKIP Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22460/fokus.v9i2.30901

Abstract

This study aims to enchance student’s career planning skills through the implementantion of the mind mapping technique in classical guidance services for grade VIII D student’s at SMP Negeri 29 Samarinda. The research employed the Guidance and Counseling Action Research (PTBK) approach, conductes in two cycles consisting of planning, action, observation and reflection phases. The participants were 26 student’s selelcted based on the student needs analysis (AKPD), in which the career planning aspect was identified as the highest priority. Data were collected using a career planning scale and interviews, and analyzed descriptively through both quantitative and qualitative methods. The findings indicated an improvement in the average score 103,07 in the first cycle to 153 in the second cycle, categorized as high. Therefore, it can be concluded that the application of the mind mapping technique within classical guidance services is effective in improving student’s career planning abilities.
Co-Authors Achmad Rizal Anita Miftahul Maghfiroh Bambang Guruh Irianto Ekani, Luly Jovita Emmanuela Ragil, Adinda Liliek Soetjiatie Muslifar, Rury Sarah, Alfira Sari Pratiwi, Yashinta Sona, Dwi Triwiyanto , Triwiyanto Wahyu Widyatmoko