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Search Results: 1 - 10 of 18 matches for " Indri Neforawati "
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Simulation of High Power Amplifier Calculation in VSAT System
Indri Neforawati,Hoga Saragih
TELKOMNIKA , 2009,
Abstract: Arithmatical simulation of High Power Amplifier (HPA) on VSAT system is a program which used to calculate the capacity of HPA as a working test of maximum power on each remote station of the VSAT network system, afterward can be obtained the available capacity value and power capacity used, therefore able to reallocate residual power below its available power spare. VSAT system can be used for several telecommunication application such as video broadcast, data broadcast,audio broadcast, banking operation, ATM and others. Due to the easy operational, maintanance and its instalment, VSAT system is more prifitable compare to ordinary terestrial band, its capability for multiservice application become more flexible in using its network. The software used is Visual Basic 6.0 version and database Microsoft Access. These software take a role as visualization and planning for remote station development and also power capasity needed for each remote in the calculation of HPA.
PENETAPAN KADAR RESIDU SPIRAMISIN DALAM DAGING AYAM DI JAKARTA, CIBINONG DAN SUKABUMI
Indri Rooslamiati
Media of Health Research and Development , 2012,
Abstract: Spiramisin adalah antibiotika golongan makrolida yang dapat digunakan untuk pengobatan maupun untuk pemacu pertumbuhan ternak. Penggunaan spiramisin dapat meninggalkan residu yang dapat merugikan kesehatan konsumen apabila waktu henti obat tidak dipatuhi. Penelitian ini dimaksudkan untuk mengetahui adanya perbedaan residu dalam daging ayam yang berasa! dari dua tempat berbeda yaitu pasar swalayan dan pasar tradisional yang berada di wilayah Jakarta, Bogar, Cibinong dan Sukabumi. Umur ayam 40 hari. Penetapan kadar residu spiramisin menggunakan metode Kromatografi Cair Kinerja Tinggi Hasil analisa menunjukkan adanya residu spiramisin pada contoh daging ayam tetapi tidak ada yang melebihi batas maksimum SNI No:01-6366-2000 yaitu 0,05 ppm. Kata kunci: spiramisin, residu, penetapan kadar
PENETAPAN KADAR ARTEMISININ DALAM EKSTRAK HEKSAN TANAMAN Artemisia annua L. MENGGUNAKAN METODE DENSITOMETRI
Ani Isnawati,Indri Rooslamiati
Media of Health Research and Development , 2013,
Abstract: Abstrak Penyakit malaria masih merupakan masalah kesehatan masyarakat di Indonesia karena angka kesakitan penyakit ini masih cukup tinggi. Kinin dan klorokuin masih merupakan obat malaria yang banyak digunakan masyarakat di dunia, namun telah mengalami resisten. Artemisinin dan derivatnya merupakan obat yang digunakan terhadap plasmodium yang resisten terhadap klorokuin. Artemisinin diperoleh dari ekstrak tanaman Artemisia Annua L. Tanaman ini berasal dari daratan China namun dapat dibudidayakan di BPTO Tawangmangu. Penetapan kadar artemisinin menggunakan metode densitometri yang telah divalidasi. Ekstraksi heksan Artemisia annua L dilakukan fraksinasi dengan menggunakan acetonitril. Fraksi acetonitril di uji dengan menggunakan KLT dengan fasa diam silica gel 60 GF254 dan eluen hexan: etil asetat (4:1) guna mengidentifikasi artemisinin. Pemisahan lebih lanjut dilakukan dengan kromatografi kolom dengan fase diam silika gel dan fase geraknya yaitu n-heksan: etil asetat (4:1). Eluat yang diperoleh diujikan pada plat KLT silica gel 60 GF254 menggunakan eluen yang sama dengan sebelumnya. Eluat yang mempunyai Rf sama digabung menjadi satu fraksi dan ditetapkan kadar artemisinin menggunakan densitometri beserta validasi metodenya. Hasil validasi metode menunjukkan bahwa linearitas dengan koefisien korelasi 0,998, batas deteksi 0,028mg/mL dan batas kuantitasi 0,094mg/mL dan nilai simpangan baku relatif artemisinin memenuhi persyaratan untuk presisi yaitu lebih kecil dari 2%. Hasil perolehan kembali untuk artemisinin adalah 100,08%. Kadar artemisinin dalam ekstrak heksan herba Artemisia annua L dengan metode densitometri sebesar 0,46% dan kadar artemisinin dalam herba Artemisia annua L. 0,02% Kata Kunci: Artemisinin, Artemisia annua L, ekstrak heksan daun Artemisia annua L, Densitometri. Abstract Malaria desease is still problem health people in Indonesia, because morbiditas rate is high. Kinin and Klorokuin are used by most of people in the world, but it were resistance. Artemisinin and it’s derivate are used against resistance’s plasmodium. Artemisinin is isolation from Artemisia Annua L. plant. This is Chinese original plan but is cultivated in BPTO Tawangmangu. Artemisinin content determination in heksane extract from Artemisa annua using validated densitometry method. Artemisinin extract can be obtained by soxletasi using hexane and then fractionation was done by using acetonitril. This acetonitril extract is concentrated by rotary evaporator and artemisinin detection use thin layer chromatography with silica gel 60 GF 254 and eluen hexan :etil acetate (4:
Cognitive characteristics of older Japanese drivers
Indri H Susilowati, Akira Yasukouchi
Journal of Physiological Anthropology , 2012, DOI: 10.1186/1880-6805-31-2
Abstract: Subjects were 10 young drivers (23.3 ± 3.33 years) and 25 older drivers divided into two groups (older1 [60 to 65 years] and older2 [> 65 years]). This study revealed the correlation within driver stress inventory and driver coping questionnaires parameters was observed only in older drivers. They also needed a longer response time for Trail Making Test A and B. The factors affected the attention and cognition of older drivers by age but not driving experience itself, and coping parameters such as emotion focus, reappraisal, and avoidance were not included as stress inventory parameters. Being prone to fatigue was less for younger drivers than older drivers. Because they have shorter distances, shorter drive times, and no need for expressways, older drivers also had a significantly lower risk of thrill-seeking behaviour and more patience.The intervention addressing their attention skills, aggressive feelings, and emotion focus should be considered. The technological improvements in cars will make older drivers feel safer and make driving easier which might lower the attention paid to the road, and regular driving training might be needed to assess and enhance their safety.Data from the Japan Automobile Manufacturers Association (JAMA) in 2003 indicated that the ratio of older drivers (aged > 75 years) was twice that of young drivers (aged 16 to 24 years). In 2010, the number of older drivers remains high, with 8.9 million older drivers aged 65 to 74 years and 3.6 million aged > 75 years. JAMA predicts these numbers will increase further, especially for drivers in the latter age category.Older drivers often have some visual, cognitive, and motor skill limitations but they still need to drive in daily life for health maintenance, social, and leisure reasons. This is especially true in suburban and rural areas where public transportation is limited. Older drivers should remain active and independent in their daily life. Because it is not good for their physical and men
The Efficient Classification in Multi Relation Database Using Crossmine
Sarwosri,Darlis Herumurti,Indri Sulistyowati
TELKOMNIKA , 2008,
Abstract: Multi-relation classifications can be widely used in many disciplines, such as financial decision making, medical research, and geographical applications, and information stored in multiple relations needs to be used in decision making. Crossmine is an efficient and scalable approach for multi-relation classification. Crossmine algorithm has three step, first is find-rules, the rule has been gotten from find a rule process than remove all positive tuples satisfying rule while there are more than ten percent positif tuple left. The second is find a rule, this step has input from the result of find best predicate process, that is the complex predicate with most foilgain. If foilgain value is more than mingain, the predicate is added with rule, and max rule length less than six. Third is find best predicate, in this step we find the best predicate with definition, if the foilgain value more than the max gain value, the predicate will be saved and the bigger gain value will replace the last gain value for next comparative process. In other side, the accuracy is computed from each rule that produce in find rules process. The test for this application use the sum tuple of 200, 500, 1000, 5000 for measuring the level of accuracy from rule which is produced by crossmine algorithm.
Latvie u valodas troksne u raksturojums pēc lokusa vienādojumiem
Solveiga ?eirane,Inese Indri?āne
Baltistica , 2012,
Abstract:
IMPROVING STORAGE ROOT PROTEIN CONTENT IN SWEET POTATO THROUGH OPEN-MATING POLLINATION
Sri Umi Lestari,Ricky Indri Hapsari,Sutoyo
Agrivita : Journal of Agricultural Science , 2012,
Abstract: A field experiment was conducted at the Research Station of Brawijaya University from April to August 2009. An augmented randomized complete block design with seven blocks was utilized, seven parental clones as standard treatments and seven half-sib families as augmented treatments. Each block consisted of seven parental clones plus one randomly assigned family of half-sibs. In addition, the first block contained 29 accessions, the 2nd block had 120, the 3rd block had 194, the 4th block had 45, the 5th block had 28, the 6th block had 186, and the 7th block had 108. Ten cuttings of each parental was planted in each block, along with a single plant of each accession. There were five improved clones identified with high protein content and high yield, ranging from 6.00-8.21% dwb and 1.95 to 2.73 kg/plant, respectively. Broad-sense heritability and genetic advance of storage root weight, storage root number, percentage dry matter and protein content were high, whereas vegetative biomass and harvest index were low. The results showed that storage root weight, storage root number, percentage dry matter and protein content could be used as the basis for a crop improvement program in sweet potato.
ISOLASI DAN IDENTIFIKASI ARTEMISININ DARI HERBA Artemisia annua L .
Sukmayati Alegantina,Ani Isnawati,Indri ?Rooslamiati
Bulletin of Health Research , 2012,
Abstract: . Malaria is still a major problem in Indonesia, because mortality in patients with severe malaria remains high. Many cases are occurs in endemic areas (e.g. Papua,Kalimantan, Bali and Sulawesi). Chloroquin is the most common antimalarial drug which is widely used since 1934. Plasmodium falciparum resistant to chloroquine was reported in some countries (e.g. Thailand, Vietnam, Indonesia, and Bangladesh). To delay the development of resistance, WHO recommended antimalarial combination therapy. Artemisinin and its derivatives (artesunate, artemether, dihydroartemisin) produce rapid clearance of parasitemia and rapid resolution of symptoms compare with chloroquine. Artemisinin is obtained from Artemisia annua L. Even though there are some research produced a chemical synthetic of artemisinin, but it is not efficient and notstable. Our purposes are to conduct a preliminary research to obtain a method of isolation and identification of artemisinin which is the first step to develop a raw material of artemisinin as antimalarial drug in Indonesia. The first step of isolation is extraction from herb Artemisia annua L with n-hexane thatproduced n-hexane extract, this process is well-known as soxhletation. The second step isidentification of chemical substances from n-hexane extract. The third step is to obtain isolate from n-hexane extract by fractionation with acetonitril and separation with column chromatography. The last step is chemical and physical identification of isolateby TLC (Thin Layer (Chromatography) and FT-IR. The result from n-hexane extract measurement is 4.33 % and from acetonitril fraction is2. 40 %. Chemical identification of n-hexan extract found there are terpenoid, phenol, flavonoid, fatty acid, atsiri oil and saponin. Organoleptic identification of isolate is white crystal, monosubstrate, odorless and bitter. Identification of isolate with TLC and FT-IR confirmed that the isolate is artemisinin. Keywords: artemisinin, Artemisia annua L, FT-IR and TLC.
Extracellular Signal-Regulated Kinase (ERK) Activation and Mitogen-Activated Protein Kinase Phosphatase 1 Induction by Pulsatile Gonadotropin-Releasing Hormone in Pituitary Gonadotrophs
Haruhiko Kanasaki,Indri Purwana,Aki Oride,Tselmeg Mijiddorj,Kohji Miyazaki
Journal of Signal Transduction , 2012, DOI: 10.1155/2012/198527
Abstract: The frequency of gonadotropin-releasing hormone (GnRH) pulse secreted from the hypothalamus differently regulates the expressions of gonadotropin subunit genes, luteinizing hormone β (LHβ) and follicle-stimulating hormone β (FSHβ), in the pituitary gonadotrophs. FSHβ is preferentially stimulated at slower GnRH pulse frequencies, whereas LHβ is preferentially stimulated at more rapid pulse frequencies. Several signaling pathways are activated, including mitogen-activated protein kinase (MAPK), protein kinase C, calcium influx, and calcium-calmodulin kinases, and these may be preferentially regulated under certain conditions. Previous studies demonstrated that MAPK pathways, especially the extracellular signal-regulated kinase (ERK), play an essential role for induction of gonadotropin subunit gene expression by GnRH, whereas, MAPK phosphatases (MKPs) inactivate MAPKs through dephosphorylation of threonine and/or tyrosine residues. MKPs are also induced by GnRH, and potential feedback regulation between MAPK signaling and MKPs within the GnRH signaling pathway is evident in gonadotrophs. In this paper, we reviewed and mainly focused on our observations of the pattern of ERK activation and the induction of MKP by different frequencies of GnRH stimulation. 1. Introduction Reproductive functions in mammalians are regulated largely by the gonadotropins, luteinizing hormone (LH) and follicle-stimulating hormone (FSH), from anterior pituitary gonadotrophs, which are also involved in sex steroid hormone synthesis, follicular growth, and oocyte maturation [1]. Gonadotropins LH and FSH contain α and β subunits, and the α subunit is common to both gonadotropin hormones, whereas the β subunits differ from each other and confer specificity to the gonadotropin hormones [2]. Gonadotropins LH and FSH are mainly under the control of the hypothalamic peptide, gonadotropin-releasing hormone (GnRH), which is released into the hypophyseal portal vascular system [3]. GnRH is released from hypothalamus in a pulsatile manner, in which the pulse pattern varies physiologically as a function of hormonal status and reproductive cycle stage [4, 5]. In a study using primate model, Knobil demonstrated that pulsatile secretion of GnRH, but not continuous, was essential to maintain normal LH and FSH secretion. Continuous GnRH stimulation resulted in a decrease of LH and FSH due to the downregulation of the gonadotrophs [6]. Moreover, the frequency of GnRH pulses plays a critical role in determining the output of LH and FSH from the pituitary; that is, more rapid frequencies of GnRH
Secondary amenorrhea in a woman with spinocerebellar degeneration treated with thyrotropin-releasing hormone: a case report and in vitro analysis
Haruhiko Kanasaki, Aki Oride, Tselmeg Mijiddorj, Indri Purwana, Kohji Miyazaki
Journal of Medical Case Reports , 2011, DOI: 10.1186/1752-1947-5-567
Abstract: Our patient was a 36-year-old Japanese woman who experienced worsening of gait disturbance at around 23 years of age, and was subsequently diagnosed as having spinocerebellar degeneration. She had been treated with thyrotropin-releasing hormone-tartrate for four years. Taltirelin hydrate was added to the treatment seven months prior to her presentation, followed by an improvement in gait disturbance. Around the same period, she started lactating and subsequently developed amenorrhea three months later. Taltirelin hydrate was discontinued and she was referred to our hospital. She was found to have normal sex hormone levels. A thyrotropin-releasing hormone provocation test showed a normal response of thyroid-stimulating hormone level and an over-response of prolactin at 30 minutes (142.7 ng/mL). Resumption of menstruation was noted three months after dose reduction of thyrotropin-releasing hormone. In our in vitro study, following long-term exposure to thyrotropin-releasing hormone, cells from the rat pituitary prolactin-producing cell line GH3 exhibited an increased basal prolactin promoter activity but showed a marked decrease in responsiveness to thyrotropin-releasing hormone.Physicians should be aware of hyperprolactinemia-associated side effects in patients receiving thyrotropin-releasing hormone treatment. Long-term treatment with a thyrotropin-releasing hormone preparation might cause a large amount of prolactin to accumulate in prolactin-producing cells and be released in response to exogenous thyrotropin-releasing hormone stimulation.Thyrotropin-releasing hormone (TRH) is a hypothalamic hormone discovered as a peptide that promotes the release of thyroid-stimulating hormone (TSH) from the anterior pituitary gland [1]. TRH is also known to be a prolactin (PRL)-releasing factor [2] and the TRH provocation test is widely performed to evaluate the ability to secrete PRL. TRH-tartrate (TRH-T) is used as a diagnostic agent for hyperprolactinemia in gynecological pr
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