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Photonic Sensors 2022年第4期12卷 1-10页

作者： Ika PUSPITA ninik irawati Kartika Anoraga MADURANI Fredy KURNIAWAN Sekartedjo KOENTJORO Agus Muhamad HATTA Department of Engineering Physics Faculty of Industrial Technology and System EngineeringInstitut Teknologi Sepuluh NopemberSurabaya 60111Indonesia Department of Physics National Taiwan UniversityTaipei 10617China Department of Chemistry Faculty of Science and Data AnalyticsInstitut Teknologi Sepuluh NopemberSurabaya 60111Indonesia

A rapid and high-performance sensor for lard adulterant in edible oil was developed using the tapered plastic optical fiber(POF)coated with graphene and multi-walled carbon *** coating material was deposited onto a tapered POF with a taper waist diameter and a taper length of 0.45 mm and 1 cm,*** addition of the coating material was used to increase the sensitivity and selectivity coefficient of the tapered POF toward the lard *** sensing mechanism is based on a simultaneous interaction of lard substance and an evanescent wave of tapered POF with the coating *** results showed that graphene coating on the tapered POF increased the selectivity coefficient of the tapered POF towards lard substance from 33.54 to 324.19,and it gave a sensitivity of 0.427 dBm/%.In comparison,multi-walled carbon nanotubes coating increased the selectivity coefficient to 71.65 and increased its sensitivity to 1.189 dBm/%.Thus,the proposed configuration of the tapered POF with the coating material offered a simple configuration for a rapid,high sensitivity and selectivity detection of lard adulterant in edible oils.

关键词： Lard adulteration tapered optical fiber sensor graphene carbon nanotubes food safety

Heart Rate Monitoring Sensor Based on Singlemode-Multimode-Singlemode Fiber

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Photonic Sensors 2020年第2期10卷 186-193页

作者： ninik irawati Agus Muhamad HATTA Yoseph Gita Yhun YHUWANA SEKARTEDJO Department of Engineering Physics Institute Teknologi Sepuluh NopemberSurabaya 60111Indonesia Aston Institute of Photonics Technologies Aston UniversityAston Express WayB4&ET BirmighamUnited Kingdom Department of Physics Airlangga UniversitySurabaya 60115Indonesia

The singlemode-multimode-singlemode(SMS)fiber structure for a heart rate monitoring is proposed and *** artificial electrocardiogram(ECG)signal is used to simulate the heart pulse at different rates ranging from 50 beats per minute(bpm)to 200 *** SMS fiber structure is placed at the center of a loudspeaker and it senses the vibration of the *** vibration of the pulse signal applied to the SMS fiber structure changes the intensity of the optical output *** proposed sensor shows a linear frequency of the heart rate sensing range that matches well with the relevant heart rate from the artificial *** work shows the capability of the SMS fiber structure monitoring the heart rate frequencies for a long term,high stability realization,and reproducibility,and being suitable for the observation in hospitals as well as in other environments.

关键词： Heart rate monitoring fiber optic sensor SMS fiber singlemode-multimode-singlemode fiber hear rate sensor

The potential of Eucheuma cottonii extract as a candidate for fish anesthetic agent

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Aquaculture and Fisheries 2022年第4期7卷 427-432页

作者： ninik Purbosari Endang Warsiki Khaswar Syamsu Joko Santoso Study Program of Aquaculture Politeknik Negeri LampungJalan Soekarno Hatta No 10 Rajabasa Bandar Lampung35144Indonesia Department of Agro-Industrial Engineering Faculty of Agricultural TechnologyIPB UniversityJalan Lingkar Akademik Kampus IPBDarmaga Bogor16680Indonesia Department of Aquatic Products Technology Faculty of Fisheries and Marine ScienceIPB UniversityJalan Lingkar Akademik Kampus IPBDarmaga Bogor16680Indonesia

Red seaweed species Eucheuma cottonii was thought to have potential as an anesthetic agent because it is shown to contain compounds with bioactivity as antimicrobial,antifungal,and also *** have been no studies regarding the active ingredients of *** objective of the study was to examine the potential of *** extract as a candidate for fish anesthetic based on toxicity,phytochemistry,and active compounds contained in the *** stages of research include extraction,toxicity test extracts(BSLT),phytochemical test,quantitative test compound phytochemical results,and the identification of active compounds with *** results showed that *** extract contains a total of phenols of 4.60±0.06 mg/GAE g which is one presentation of the active ingredient in the *** extract had bioactivity with LC_(50) of 221.71±5.74μg/*** extract contained flavonoids compounds and saponins with a consecutive number of 24.48%and 0.22%.The results of identifying active compounds were found in several compounds that had activity asantidepressants or *** extract can be used as a candidate for a fish anesthetic agent.

关键词： Active compounds Eucheuma cottonii Fish anesthetic Phenol

Natural versus synthetic anesthetic for transport of live fish:A review

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Aquaculture and Fisheries 2019年第4期4卷 129-133页

作者： ninik Purbosari Endang Warsiki Khaswar Syamsu Joko Santoso Doctoral Program Department of Agroindustrial Technology Faculty of Agricultural TechnologyBogor Agricultural UniversityBogor16680Indonesia Program Study of Aquaculture Politeknik Negeri LampungBandar Lampung35144Indonesia Department of Agroindustrial Technology Faculty of Agricultural TechnologyBogor Agricultural UniversityBogor16680Indonesia Department of Aquatic Products Technology Faculty of Fisheries and Marine SciencesBogor16680Indonesia

An increased awareness of food safety and quality has led to an increased demand for live edible *** product requires effective and efficient handling technology and transport to ensure a low mortality rate,but live fish transport has not yet met this *** fish can be transported in larger quantities without being stressed during transfer,maintaining a higher *** paper explored synthetic and natural anesthetics derived from terrestrial and aquatic *** review of the different types,sources,and applications of natural and synthetic anesthetics was used to investigate the potential of seaweed as an *** addition,advantages and disadvantages of anesthetics and the potential of seaweed as a prospect of anesthetic are discussed.

关键词： Fish anesthetic Seaweed potential Live fish transport

The Effect of Giving Intervention 12 Balance Exercise on Postural Balance in Elderly

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Open Journal of Nursing 2019年第5期9卷 534-540页

作者： ninik Murtiyani Hartin Suidah Department of Nursing Nursing Academy Dian Husada Mojokerto Indonesia

Elderly is an age group that has a high risk of experiencing health problems. One risk that can be experienced by the elderly is the risk of falling. One of the risk factors for falling in the elderly is decreasing in postural balance of the elderly. One of the non-pharmacological therapies developed to reduce the risk of falling in the elderly is to improve the ability of the elderly, especially in controlling postural balance. The purpose of this study was to determine the effectiveness of 12 balance exercises to improve postural balance in the elderly. This type of research is quasi experiments with static group comparison. The research data are obtained by researchers using observation sheet, then the data are tabulated. This study involved two research groups namely the control group (the group not given the intervention) and the treatment group (the group that was given the 12 balance exercise intervention). From the results of Paired samples, t-test with significance level α = 0.05 is obtained by the significance value (p) of 0.025. This study shows that the provision of 12 balance therapy exercise strategy is effective to improve postural balance in the elderly as a preventive effort from the risk of falling.

关键词： Elderly Postural Balance 12 Balance Exercise