Hasil Pencarian  ::  Simpan CSV :: Kembali

Hasil Pencarian

Ditemukan 31065 dokumen yang sesuai dengan query
cover
cover
Ailsa Shafa Nariswari
"Kawasan tambak Blanakan, Subang, Jawa Barat merupakan tempat budidaya perikanan yang telah dipengaruhi oleh berbagai aktivitas antropogenik di sekitarnya. Ikan mujair merupakan salah satu komoditas budidaya di tambak Blanakan yang banyak dikonsumsi dan diperjualbelikan. Penelitian ini bertujuan untuk menentukan kandungan logam berat seng (Zn) dan timbal (Pb) pada sedimen dan ikan mujair (Oreochromis mossambicus), serta mengetahui nilai Bioconcentration Factor (BCF) logam berat seng dan timbal pada ikan mujair di tambak Blanakan, Subang, Jawa Barat. Pengambilan sampel dilakukan menggunakan metode purposive sampling pada tiga stasiun dengan titik inlet, midlet, dan outlet. Sampel sedimen diambil sebanyak 500 gram pada setiap titik dari ketiga stasiun, sedangkan ikan mujair diambil sebanyak 5 individu dari setiap stasiun. Preparasi sampel dilakukan dengan cara sampel sedimen dikeringkan ke dalam oven, sedangkan ikan mujair dibedah untuk didapatkan sampel daging. Analisis kandungan logam berat seng menggunakan metode Atomic Absorption Spectrophotometry (AAS), sedangkan logam timbal menggunakan metode Inductively Coupled Plasma (ICP). Berdasarkan hasil analisis, kandungan logam berat seng pada sedimen berkisar 15,21 – 43,94 ppm, sedangkan logam timbal berkisar 5,04 – 7,88 ppm. Kandungan logam berat seng pada ikan mujair berkisar 3,33 – 8,21 ppm, sedangkan logam timbal tidak terdeteksi. Nilai BCF logam seng pada ikan mujair berkisar 0,132 – 0,311 (deconcentrator). Nilai BCF logam timbal pada ikan mujair tidak dapat ditentukan.

The Blanakan ponds area, Subang, West Java, is a place for aquaculture where various anthropogenic activities have influenced the vicinity. Mozambique tilapia is one of the aquaculture commodities at Blanakan ponds, which is widely consumed and traded. This study aims to determine the content of heavy metals zinc (Zn) and lead (Pb) in sediments and mozambique tilapia (Oreochromis mossambicus), and to determine the value of the Bioconcentration Factor (BCF) of heavy metals zinc and lead in mozambique tilapia at Blanakan ponds, Subang, West Java. Sampling was carried out using the purposive sampling method at three stations with inlet, midlet, and outlet points. Sediment samples were taken as much as 500 grams at each point from the three stations, while 5 individuals of mozambique tilapia were taken from each station. Sample preparation was carried out by drying the sediment samples in an oven, while the mozambique tilapia were dissected to obtain meat samples. Analysis of the heavy metal content of zinc used the Atomic Absorption Spectrophotometry (AAS) method, while lead metal used the Inductively Coupled Plasma (ICP) method. Based on the analysis results, the heavy metal content of zinc in the sediment ranged from 15,21 – 43,94 ppm, while lead metal ranged from 5,04 – 7,88 ppm. The heavy metal content of zinc in mozambique tilapia ranged from 3,33 – 8,21 ppm, while lead metal was not detected. The BCF value of zinc metal in mozambique tilapia ranged from 0,132 – 0,311 (deconcentrator). The BCF value of lead metal in mozambique tilapia cannot be determined."
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2022
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
cover
Amara Sausan Qotrunnada
"Tambak Blanakan merupakan kawasan budidaya perikanan yang berada di daerah pesisir Kabupaten Subang, Jawa Barat. Kawasan di sekitar tambak merupakan tempat padat aktivitas yang berpotensi menyebabkan kontaminasi logam berat masuk ke dalam perairan tambak. Logam berat yang masuk dapat memengaruhi organisme akuatik seperti ikan. Ikan mujair (Oreochromis mossambicus) merupakan salah satu ikan budidaya yang dikonsumsi oleh manusia. Penelitian ini bertujuan untuk menentukan kandungan logam berat kadmium (Cd) dan tembaga (Cu) pada sedimen dan ikan mujair Oreochromis mossambicus, serta menentukan nilai Bioconcentration Factor (BCF) logam Cd dan Cu pada ikan mujair di tambak Blanakan, Kabupaten Subang, Jawa Barat. Penentuan lokasi pengambilan sampel dengan metode purposive sampling pada tiga stasiun dengan tiga titik, yaitu inlet, midlet, dan outlet. Sampel sedimen diambil sebanyak 500 g pada setiap titik dari ketiga stasiun dan sampel ikan mujair diambil sebanyak 5 ekor pada tiap stasiun dengan berat berkisar antara 50–150 g. Sampel sedimen dikeringkan sebanyak 200 g dan sampel bagian daging ikan mujair diambil sebanyak 100 g/stasiun sebelum dianalisis kandungan logam berat. Logam berat kadmium pada sedimen dan ikan mujair dianalisis dengan Atomic Absorption Spectrophotometry (AAS) dan Inductively Coupled Plasma (ICP), sedangkan logam berat tembaga pada kedua sampel dianalisis dengan AAS. Hasil analisis kandungan logam tembaga pada sedimen rata-rata berkisar antara 5,54–8,31 ppm, sedangkan analisis logam tembaga pada ikan mujair rata-rata sebesar 2,05 ppm. Hasil analisis kandungan logam kadmium baik pada sedimen maupun ikan mujair tidak terdeteksi (not detected). Nilai BCF logam tembaga adalah BCF<1, menunjukkan bahwa ikan mujair di tambak Blanakan termasuk dalam kategori dekonsentrator.

Blanakan ponds is an aquaculture area located in the coastal area of Subang Regency, West Java. The area around the pond is a dense place of activity that has the potential to cause heavy metal contamination to enter the pond waters. Heavy metals that enter can affect aquatic organisms such as fish. Mozambique tilapia (Oreochromis mossambicus) is one of the cultivated fish that is consumed by humans. This study aims to determine the content of heavy metals cadmium (Cd) and copper (Cu) in sediment and Mozambique tilapia Oreochromis mossambicus, as well as determine the value of the Bioconcentration Factor (BCF) of Cd and Cu metals in Mozambique tilapia in Blanakan ponds, Subang Regency, West Java. Determination of the sampling location by purposive sampling method at three stations with three points, namely inlet, midlet, and outlet. Sediment samples were taken as much as 500 g at each point from the three stations and samples of Mozambique tilapia were taken as many as 5 fish at each station with a weight ranging from 50–150 g. Sediment samples were dried as much as 200 g and samples of Mozambique tilapia meat were taken as much as 100 g/station before being analyzed for heavy metal content. Cadmium heavy metal in sediment and Mozambique tilapia was analyzed by Atomic Absorption Spectrophotometry (AAS) and Inductively Coupled Plasma (ICP), while copper heavy metal in both samples was analyzed by AAS. The results of the analysis of copper metal content in sediments averaged between 5.54–8.31 ppm, while the analysis of copper metal in Mozambique tilapia averaged 2.05 ppm. The results of the analysis of the metal content of cadmium in both sediment and Mozambique tilapia were not detected. The BCF value of the copper metal is BCF <1, indicating that the Mozambique tilapia in the Blanakan ponds are included in the deconcentrator category."
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2022
S-pdf
UI - Skripsi Membership  Universitas Indonesia Library
cover
cover
Mochammad Rizky Al Ryzal
"Telah dilakukan penelitian pada Biawak Kalimantan, Lanthanotus borneensis di kandang reptil Museum Zoologicum Bogoriense. Penelitian dilakukan untuk mendapatkan data dasar sebagai penunjang keberlangsungan hidupnya secara eks-situ di luar habitat asli melalui pengamatan perilaku makan. Penelitian pada sepuluh individu L. borneensis dilakukan selama bulan Februari 2017--Maret 2017 menggunakan metode focal animal sampling dan Metode Neu Indeks Preferensi . Durasi pengamatan perhari adalah 120 menit untuk 2 individu, sehingga total pengamatan selama 20 kali adalah 2.400 menit. Sebelum makan, individu L. borneensis menyentuh pakan menggunakan ujung mulut, lalu memakan pakan. Rerata durasi pakan yang paling cepat ditelan oleh L. borneensis yaitu ikan teri 7,25 detik 2,79 , diikuti dengan daging udang 10,25 detik 3,32 , daging ayam 13,58 detik 5,5 dan cacing tanah 30,48 detik 30,36 . Cacing tanah menjadi peringkat tertinggi 1,53 dalam preferensi pakan, diikuti dengan daging udang 1,46 , daging ayam 0,57 dan terendah yaitu ikan teri 0,48 . Konsumsi pakan memengaruhi berat badan tetapi tidak memengaruhi pertumbuhan panjang tubuh individu.

Research on Earless monitor lizard, Lanthanotus borneensis has been done in the captivity at Zoologicum Bogoriense Museum. The research aimed to obtain baseline data to support its ex situ survival beyond the natural habitat through observation of feeding behavior. Research on ten individuals of L. borneensis was conducted during February 2017 March 2017 using focal animal sampling method and Neu Method Preference Index . The daily observation duration is 120 minutes for 2 individuals, the total observation 20 times is 2,400 minutes. Before eating, individual of L. borneensis touch the food with the snout, then eating the food. The fastest food that swallowed by L. borneensis is anchovy 7.25 seconds 2.79 , followed by shrimp meat 10.25 seconds 3.32 , chicken meat 13.58 seconds 5.5 and earthworm 30.48 seconds 30.36 . The first rank in food preferences is earthworms 1.53 , followed by shrimp meat 1.46 , chicken meat 0.57 and anchovy 0.48 . Feed consumption affects body weight but does not affect the growth of the individual body length."
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2017
S68122
UI - Skripsi Membership  Universitas Indonesia Library
cover
"Summary:
This meticulous book examines how gender inequalities in contemporary societies are changing and how further changes towards greater gender equality might be achieved."
Cheltenham: Edward Elgar, 2012
305.3 GEN
Buku Teks SO  Universitas Indonesia Library
cover
Fakultas Teknik Universitas Indonesia, 1995
S34483
UI - Skripsi Membership  Universitas Indonesia Library
cover
Romanus Tory
"Yahoo! is an Internet portal company which was founded in 1995 in Santa Clara, California. As one of the portal market leaders, Yahoo! offers various services including Internet communication, commerce (B2B and B2C), on-line media, eiiterprise portal solution, and audio-video streaming.
Yahoo!?s business strategy (until the year 2000) was to make profit by selling advertisements and banners, and by establishing B2C commerce (including co-marketing with amazon.com, E*Trade, and eLoan. Yahoo! do not charge subscription fee to its user. Because the company revenue is mainly from advertising, Yahoo! tries to reach as many customers as they can and build its brand awareness.
Yahoo! has a strong customer base, reaching a number of 180 million unique users and 13,000 merchants (in Yahoo! Shopping) . Its users are spreading across many countries. Figure 3.3. shows Yahoo! ?s users by region.
Yahoo!?s financial performance, in the period of 1995 ? 2000, shows a rapid revenue growth of CAGR 278%. Despite of its high revenue growth, Yahoo! Experienced negative profit in the period of 1995 ? 1999. Yahoo! finally booked profit in the fiscal year of 1999 and 2000.
In the year 2000, Yahoo ! successfully gained revenue o f US s 1 . 1 billion, significant growth of 88% from the previous year. EBITDA increased 1 17% from the previous year amounting to US $ 41 1 millions. The two remarkable increases both in revenue and in EBITDA indicated a good financial performance in the year 2000.
The main problem which is faced by Yahoo! is its threatened future revenue. From the period of 1995 to 2000, Yahoo! experienced a high growth of revenue, however, the prospect of Yahoo!?s future revenue can be threatened by several risks of competitors, macro economy condition, and volatility in the Internet industry.
The weighted average probability is used to do the final calculation of value of the firm by considering all scenarios. Each scenario is weighted according to its probability to take place ( 0% to 100%), then it is totaled to get the final value of the firm. In determining the probability, each scenario is compared to the industry analysis and macro economic assumptions. The final value is obtained by multiplying each scenario?s value by its probability and then totaling all the weighted average values to get the final value of the firm. The final calculation of Yahoo! ?s value of the firm as of 3 1 December 2000 results a value o f US $ 8 . 6 billions . That value is far from Yahoo!?smarket capitalization as of 31 December 2000 which amounts to US $ 16.8 billions.
The significant differences between Yahoo!?s final value and Yahoo!?s market capitalization, indicate the volatility of Yahoo! stock price caused by high uncertainty in the internet portai industry (Yahoo! has a high beta = 3.6). The valuation result in this thesis has been considered the slow down in the US macro economy in the year 200 1 , which directly influence the Internet advertising spending. Recent data as of 3 1 March 2001 (after the impact of the US macro economy slow down was recognized by investors) reveals that Yahoo! market capitalization was Us s 8.9 billions (close to the final valuation result).
Yahoo !?s growth tends to lower . Even with the optimistic scenario , Scenario C, Yahoo! ?s revenue growth rate in the year 2005 is 49.48%, while in the base case amounts to 27%. To finance its revenue growth, Yahoo! should increase its sustainable growth rate.
Yahoo! should diversify its revenue structure to minimize the interdependence on advertising revenue. Yahoo! should seek other sources of revenue such as subscription fees., B2B, or B2C.
Yahoo! should increase net operating margin by increasing revenue per customer. To increase the revenue per customer, Yahoo! could charge the subscription fee or could establish B2C. The high revenue per customer would result in low customer acquisition cost, which at the end would increase net operating margin. The high net operating margin could be used to support high growth strategy, or to pay dividends as a positive signal to shareholders in order to increas e value o f the firm."
2001
T3568
UI - Tesis Membership  Universitas Indonesia Library
cover
Croll, Elizabeth
Geneva: International Labour Office, 1985
331.4 CRO w
Buku Teks SO  Universitas Indonesia Library
cover
Faiq Anan Murobby
"Telah dilakukan penelitian untuk mengetahui pengaruh pemberian alga cokelat (Sargassum) dalam ransum terhadap pertumbuhan dan sintasan ikan nila srikandi (Oreochromis aureus x O. niloticus) yang dipelihara dengan sistem akuaponik. Terdapat 4 perlakuan dan 3 ulangan. P0 yang diberi pakan tanpa campuran Sargassum, kelompok P1 yang diberi pakan dengan campuran Sargassum 2%, kelompok P2 yang diberi pakan dengan campuran Sargassum 4%, dan kelompok P3 yang diberi pakan dengan campuran Sargassum 6%. Hasil uji anava satu faktor (P > 0,05) menunjukkan tidak adanya pengaruh nyata pemberian Sargassum terhadap pertumbuhan dan sintasan pada semua kelompok perlakuan.

The research was done to observe the effect of brown algae (Sargassum) in the ration on the growth and survival of Srikandi tilapia (Oreochromis aureus x O. niloticus) were maintained aquaponics system. There are 4 treatments and 3 replication. P0 mixture fed without Sargassum, P1 group fed with a mixture of 2% Sargassum, P2 group fed with a mixture of Sargassum 4%, and the P3 group fed with Sargassum mixture of 6%. The feed is given three times daily for 8 weeks. The result anova test (P > 0.05) showed no significant effect on the survival and provision of Sargassum growth in all treatment groups."
Depok: Fakultas Matematika dan Ilmu Pengetahuan Alam Universitas Indonesia, 2015
S58225
UI - Skripsi Membership  Universitas Indonesia Library
<<   1 2 3 4 5 6 7 8 9 10   >>