scholarly journals KARAKTERISTIK DAN POLA SEBARAN PHYTOTELMATA SEBAGAI TEMPAT PERINDUKAN ALAMI NYAMUK DI KEBUN RAYA LIWA LAMPUNG BARAT

Biospecies ◽  
2020 ◽  
Vol 13 (2) ◽  
pp. 16-21
Author(s):  
Mentoria Alviani Sitinjak ◽  
Emantis Rosa ◽  
Rochmah Agustrina ◽  
Sutyarso
Keyword(s):  
Ex Situ ◽  
Musa Sp ◽  

Kebun Raya Liwa (KRL) adalah kawasan konservasi tumbuhan ex-situ yang memiliki banyak koleksi tumbuhan sehingga akan berdampak pada banyaknya jenis tanaman phytotelmata. Phytotelmata adalah tanaman yang pada bagian organnya dapat menampung air dan dimanfaatkan berbagai organisme termasuk nyamuk sebagai tempat perindukan alami. Tujuan penelitian adalah untuk mengetahui karakteristik phytotelmata dan pola sebaran phytotelmata di Kebun Raya Liwa, Lampung Barat. Penelitian ini dilaksanakan pada bulan November 2019 – Januari 2020 di Kebun Raya Liwa dan Laboratorium Botani Universitas Lampung. Metode penelitian dilakukan secara deskriptif dengan pendekatan metode survey. Data yang diperoleh ditampilkan dalam bentuk tabel dan gambar. Hasil penelitian menunjukan terdapat 7 jenis phytotelmata di Kebun Raya Liwa yaitu Nepenthes mirabilis, Cyathea coopei, Bambusa sp. Areca catechu, Musa sp. Colocasia gigantea, dan Crynum asiaticum dengan 2 pola sebaran phytotelmata yaitu berkelompok dengan nilai IP berkisar antara 0,813-1,194 dan pola sebaran secara seragam dengan nilai IP -2,08.Kata Kunci: Phytotelmata, Tempat Perindukan Alami, Kebun Raya Liwa

2017 ◽  
Vol 3 (4) ◽  
pp. 78 ◽  
Author(s):  
Farid Kuswantoro

<p class="Els-Abstract-text">Numerous Kalimantan plants species were traditionaly utilized for its medicinal properties. Ex situ conservation of these species in Balikpapan Botanic Garden (BBG), one of the mostly recent launched botanic garden in Indonesia however, should be appreciated and encouraged to preserved the unique traditional plant-based medicine knowledge of Kalimatan people. An etnobotany literature study was conducted to documented traditional medicine plant species collected in BBG used by indigenous people of Kalimantan to treat malaria. This study found nine plant species collected in BBG namely <em>Aleurites mollucanus </em>(L.) Willd<em>., Alstonia angustiloba </em>Miq.<em>, Alstonia scholaris </em>L. R. Br<em>., Areca catechu </em>L.<em>, Eurycoma longifolia </em>Jack<em>, Lansium parasiticum </em>(Osbeck) K. C. Sahni &amp; Bennet, <em>Morinda</em> <em>citrifolia</em> L., <em>Peronema</em> <em>canescens</em> Jack and<em> Vitex</em> <em>pinnata</em> L. were traditionally used to treat malaria. Further literature study showed that some of these species exhibits biological activity toward <em>Plasmodium berghei </em>and<em> P. falciparum.</em> Three species of this list were classified as rare medical plants in Indonesia. However, further study will still be needed to fully confirm anti malaria activity of these plant species and its potential to become new anti-malaria medicine.</p><div><p class="Els-keywords"><em> </em></p></div><strong>Keywords:</strong> Balikpapan Botanic Garden; ex situ conservation; Malaria; traditional medicine


Author(s):  
D. Loretto ◽  
J. M. Gibson ◽  
S. M. Yalisove ◽  
R. T. Tung

The cobalt disilicide/silicon system has potential applications as a metal-base and as a permeable-base transistor. Although thin, low defect density, films of CoSi2 on Si(111) have been successfully grown, there are reasons to believe that Si(100)/CoSi2 may be better suited to the transmission of electrons at the silicon/silicide interface than Si(111)/CoSi2. A TEM study of the formation of CoSi2 on Si(100) is therefore being conducted. We have previously reported TEM observations on Si(111)/CoSi2 grown both in situ, in an ultra high vacuum (UHV) TEM and ex situ, in a conventional Molecular Beam Epitaxy system.The procedures used for the MBE growth have been described elsewhere. In situ experiments were performed in a JEOL 200CX electron microscope, extensively modified to give a vacuum of better than 10-9 T in the specimen region and the capacity to do in situ sample heating and deposition. Cobalt was deposited onto clean Si(100) samples by thermal evaporation from cobalt-coated Ta filaments.


Author(s):  
K. Barmak

Generally, processing of thin films involves several annealing steps in addition to the deposition step. During the annealing steps, diffusion, transformations and reactions take place. In this paper, examples of the use of TEM and AEM for ex situ and in situ studies of reactions and phase transformations in thin films will be presented.The ex situ studies were carried out on Nb/Al multilayer thin films annealed to different stages of reaction. Figure 1 shows a multilayer with dNb = 383 and dAl = 117 nm annealed at 750°C for 4 hours. As can be seen in the micrograph, there are four phases, Nb/Nb3-xAl/Nb2-xAl/NbAl3, present in the film at this stage of the reaction. The composition of each of the four regions marked 1-4 was obtained by EDX analysis. The absolute concentration in each region could not be determined due to the lack of thickness and geometry parameters that were required to make the necessary absorption and fluorescence corrections.


Author(s):  
D. Loretto ◽  
J. M. Gibson ◽  
S. M. Yalisove

The silicides CoSi2 and NiSi2 are both metallic with the fee flourite structure and lattice constants which are close to silicon (1.2% and 0.6% smaller at room temperature respectively) Consequently epitaxial cobalt and nickel disilicide can be grown on silicon. If these layers are formed by ultra high vacuum (UHV) deposition (also known as molecular beam epitaxy or MBE) their thickness can be controlled to within a few monolayers. Such ultrathin metal/silicon systems have many potential applications: for example electronic devices based on ballistic transport. They also provide a model system to study the properties of heterointerfaces. In this work we will discuss results obtained using in situ and ex situ transmission electron microscopy (TEM).In situ TEM is suited to the study of MBE growth for several reasons. It offers high spatial resolution and the ability to penetrate many monolayers of material. This is in contrast to the techniques which are usually employed for in situ measurements in MBE, for example low energy electron diffraction (LEED) and reflection high energy electron diffraction (RHEED), which are both sensitive to only a few monolayers at the surface.


Author(s):  
M. E. Twigg ◽  
B. R. Bennett ◽  
J. R. Waterman ◽  
J. L. Davis ◽  
B. V. Shanabrook ◽  
...  

Recently, the GaSb/InAs superlattice system has received renewed attention. The interest stems from a model demonstrating that short period Ga1-xInxSb/InAs superlattices will have both a band gap less than 100 meV and high optical absorption coefficients, principal requirements for infrared detector applications. Because this superlattice system contains two species of cations and anions, it is possible to prepare either InSb-like or GaAs-like interfaces. As such, the system presents a unique opportunity to examine interfacial properties.We used molecular beam epitaxy (MBE) to prepare an extensive set of GaSb/InAs superlattices grown on an GaSb buffer, which, in turn had been grown on a (100) GaAs substrate. Through appropriate shutter sequences, the interfaces were directed to assume either an InSb-like or GaAs-like character. These superlattices were then studied with a variety of ex-situ probes such as x-ray diffraction and Raman spectroscopy. These probes confirmed that, indeed, predominantly InSb-like and GaAs-like interfaces had been achieved.


2017 ◽  
Vol 38 (3) ◽  
pp. 133-143 ◽  
Author(s):  
Danny Osborne ◽  
Yannick Dufresne ◽  
Gregory Eady ◽  
Jennifer Lees-Marshment ◽  
Cliff van der Linden

Abstract. Research demonstrates that the negative relationship between Openness to Experience and conservatism is heightened among the informed. We extend this literature using national survey data (Study 1; N = 13,203) and data from students (Study 2; N = 311). As predicted, education – a correlate of political sophistication – strengthened the negative relationship between Openness and conservatism (Study 1). Study 2 employed a knowledge-based measure of political sophistication to show that the Openness × Political Sophistication interaction was restricted to the Openness aspect of Openness. These studies demonstrate that knowledge helps people align their ideology with their personality, but that the Openness × Political Sophistication interaction is specific to one aspect of Openness – nuances that are overlooked in the literature.


1984 ◽  
Vol 39 (12) ◽  
pp. 1485-1486 ◽  
Author(s):  
David J. Knesper ◽  
David J. Pagnucco
Keyword(s):  

2004 ◽  
Author(s):  
Eilish Cleary ◽  
Pat Martens ◽  
Charles Burchill

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