scholarly journals Utilization of Humic Materials and Compost to Improve The Quality of Nickel Mine Soil as Media Growth of Sengon (Paraserianthes falcataria)

2016 ◽  
Vol 6 (1) ◽  
pp. 53-60
Author(s):  
Ikbal Ikbal ◽  
◽  
Iskandar Iskandar ◽  
Sri Wilarso Budi R ◽  
◽  
...  
Keyword(s):  
Mine Soil ◽  
Paraserianthes Falcataria ◽  
Humic Materials

Bond Quality of Laminated Wood Made from Surian (Toona sinensis Roem) and Sengon (Paraserianthes falcataria (L.) Nielsen)

2017 ◽  
Vol 18 (1) ◽  
pp. 32-38 ◽  
Author(s):  
Eka Mulya Alamsyah ◽  
Ihak Sumardi ◽  
Sutrisno . ◽  
Atmawi Darwis ◽  
Yoyo Suhaya
Keyword(s):  
Bond Quality ◽  
Paraserianthes Falcataria ◽  
Toona Sinensis

scholarly journals Growth and physical quality of Paraserianthes falcataria (L) Nielsen seedling on ten types of transplanting media

2016 ◽  
Vol 7 (1) ◽  
Author(s):  
Slamet Santosa
Keyword(s):  
Rice Husk ◽  
Seed Quality ◽  
Dry Weight ◽  
Cow Manure ◽  
Plastic Container ◽  
Paraserianthes Falcataria ◽  
Physical Quality ◽  
Leaf Dry Weight ◽  
Stem Leaf

Growth and physical quality of <em>Paraserianthes</em> <em>falcataria</em> (L) Nielsen seedling is determined by the quality and quantity of transplanting media. The aim of this research is to determine the best transplanting media for growing<em> P. falcataria</em> seedling. Research started with sowing <em>P. falcataria</em> seed in plastic container until the seedling grow. After 2 weeks of age, seedling was placed in ten types of transplanting media. Transplanting media consist of Sidoarjo’s mud soil, rice husk, compost and cow manure. Each types of transplanting media were made from different concentration of mud, rice husk, compost and cow manure. Result showed that the highest growth of <em>P. falcataria</em> seedling was found in M4 with 31.0 cm. However, this result was not significantly different with M1 which the high is 30.6 cm. Other <em>P. falcataria</em> seedlings showed varied growth with the value ranging from 27.6 to 29.9 cm. M4 also showed highest stem diameter, root length and leaves number with value 0.50 cm; 20.6 cm; 50.1 respectively. Root dry weight and stem+leaf dry weight were also highest on M4 with value 1.4g and 4.9g. RRSL and Seed Quality Index were also highest on M4 with value 3.50 and 0.09. It was concluded that M4 is the best transplanting media for <em>P. falcataria</em> seedling.

scholarly journals Diversity, density and distribution of termites in housing complexes in Purwokerto, Central Java, Indonesia

2020 ◽  
Vol 21 (12) ◽  
Author(s):  
Hery Pratiknyo ◽  
TRISNO HARYANTO ◽  
DWI NURCAHYO APRIYANTO
Keyword(s):  
Spatial Distribution ◽  
Rapid Development ◽  
Tectona Grandis ◽  
Termite Species ◽  
Paraserianthes Falcataria ◽  
Central Java ◽  
Significant Difference ◽  
Housing Complex ◽  
Surrounding Areas

Abstract. Pratikno H, Haryanto T, Apriyanto DN. 2020. Diversity, density, and distribution of termites in housing complexes in Purwokerto City, Central Java Indonesia. Biodiversitas 21: 5729-5735. Termite attacks have detrimental effects on buildings and incur considerable costs. The rapid development of housing complex in Purwokerto City, Central Java Province, Indonesia urges an investigation on the occurrence of termite attacks. This research aimed to identify the diversity of termite species, its spatial distribution and its density on a variety of wood on housing complexes in Purwokerto City and the surrounding areas. The context of this study focused on wood species commonly used by the developers, namely albasia (Paraserianthes falcataria), which is commonly used for the upper ceiling, bangkirai (Shorea laevifolia) for poles and door/window frames, and teak (Tectona grandis) which is often used for door and window boards. We used bait techniques with the rationale that it is cheap and environmentally friendly as well as accurate. Four housing complexes in four subdistricts were randomly selected stratified based on four altitude ranges (<100 m, 100 m, 200 m, and 300 m). In each selected housing complex wood baits of three durability types (i.e. albasia, bangkirai and teak) were installed, each measuring 30 cm x 2 cm x 2 cm with five replications. Data of termite species, spatial distribution of termite species, and individual density in each housing complex were recorded after three months since the wood baits were stockpiled. Microclimate variables during the study were also recorded. The differences in density across housing complexes and the three types of wood were tested using ANOVA and continued with Duncan's test. The results showed three species of termites attacked wood baits, namely Microtermes insperatus, Macrotermes gilvus, and Odontotermes javanicus, all belong subterranean termite group. M. insperatus and O. javanicus had specific spatial distribution without overlapping zone among the two, while M. gilvus was the most adaptable and widely distributed in all housing complexes (<100-300 m asl.) regardless of the durable quality of the wood. There was significant difference in termite attacks across housing complexes with Ketapang housing complex in Sokaraja Subdistrict (<100 m asl.) was most frequently attacked. Conversely, there were no significant differences in termite attacks across the three types of wood (i.e. albasia, bangkirai, and teak).

scholarly journals PENGARUH PEMBERIAN KOMPOS DAN POSISI LERENG TERHADAP PERTUMBUHAN SENGON (Paraserianthes falcataria) DI LAHAN REVEGETASI BEKAS TAMBANG BATUBARA

2019 ◽  
Vol 15 (2) ◽  
pp. 146
Author(s):  
Achmad Syauqie ◽  
Gt. Muhammad Hatta ◽  
Bambang Joko Priatmadi ◽  
Kissinger Kissinger
Keyword(s):  
Analytical Method ◽  
Organic Material ◽  
Government Regulation ◽  
Block Design ◽  
Slope Position ◽  
Paraserianthes Falcataria ◽  
Soil Layers ◽  
Randomized Block Design ◽  
Two Factors

Reclamation activities are efforts to repair or restore damaged land and vegetation in order to function optimally in accordance with its designation (Government Regulation Number 76 of 2008). The important component in reclamation is revegetation or replanting. Improvements in the quality of land in revegetation need to be done to improve the success of revegetation. Giving organic material is the main key to improving soil layers. This study aims to determine the effect of compost on the growth of Sengon (Paraserianthes falcataria) plants located on peaks, slopes, and valleys. The analytical method used is a randomized block design (RBD) of two factors. The first factor is the topographic position of the peaks, slopes, and valleys. The second factor is the fertilizer dose consisting of a dose of 1 kg, a dose of 2 kg and a dose of 3 kg. The growth assessed is the size of the diameter and height of the plant. Fertilizers used compost. The treatment of compost dosing and slope position significantly affected the increase in the diameter and height of the plant. The dominant compost dose affects the increase in diameter and height of Paraserianthes falcataria.

Immunoferritin localization of intracellular antigens in positively stained frozen sections

1978 ◽  
Vol 36 (2) ◽  
pp. 168-169
Author(s):  
K. T. Tokuyasu
Keyword(s):  
Surface Tension ◽  
Water Surface ◽  
Thin Layers ◽  
The Other ◽  
Positive Staining ◽  
Frozen Sections ◽  
The Past ◽  
Ultrathin Frozen Sections ◽  
Definition Of

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).

Lithography below 100 nm

1983 ◽  
Vol 41 ◽  
pp. 96-99
Author(s):  
L. D. Jackel
Keyword(s):  
Spatial Distribution ◽  
Electron Beam ◽  
Electron Scattering ◽  
Electron Beam Lithography ◽  
Substrate Material ◽  
Local Electron ◽  
Electron Dose ◽  
Positive Resist ◽  
Exposure Process

Most production electron beam lithography systems can pattern minimum features a few tenths of a micron across. Linewidth in these systems is usually limited by the quality of the exposing beam and by electron scattering in the resist and substrate. By using a smaller spot along with exposure techniques that minimize scattering and its effects, laboratory e-beam lithography systems can now make features hundredths of a micron wide on standard substrate material. This talk will outline sane of these high- resolution e-beam lithography techniques.We first consider parameters of the exposure process that limit resolution in organic resists. For concreteness suppose that we have a “positive” resist in which exposing electrons break bonds in the resist molecules thus increasing the exposed resist's solubility in a developer. Ihe attainable resolution is obviously limited by the overall width of the exposing beam, but the spatial distribution of the beam intensity, the beam “profile” , also contributes to the resolution. Depending on the local electron dose, more or less resist bonds are broken resulting in slower or faster dissolution in the developer.

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