Distribution Pattern and Abundance of the Marine Hermit Crabs Population in Sindangkerta Beach of Cipatujah District, Tasikmalaya Regency

The research has been conducted on April 2016. It aims to obtain the quantitative information concerning the distribution pattern and abundance of the Marine Hermit Crabs population. The applied research method is the descriptive method with the research design of belt transect and the hand sorting as the applied sampling technique. Sampling was carried out at the Littoral Zone at 6 stations with 5 plot squared for each station. The applied area of plot squared is 1 x 1 m. The taken data are the data of hermit crabs and the supporting data of environment. Data analysis includes the distribution pattern and abundance of the Marine Hermit Crabs population. Marine Hermit Crabs determination is carried out in the Research Center Laboratory of the Oceanography Indonesian Institute of Science Jakarta. Determination result obtains the 50 individuals of Marine Hermit Crabs consist of one family and 9 species, namely Aniculus erythraeus, Calcinus morgani, Calcinus laevimanus, Clibanarius corallinus, Clibanarius humilis, Clibanarius mergueinisis, Clibanarius striolatus, Clibanarius virescens, and Dardanus megistos. Research result shows that the abundance of the Marine Hermit Crabs population ranges of 1 ind/m2 – 2 ind/m2. In general the abundance analysis shows the low level of abundance. Morishita index shows the distribution pattern of Marine Hermit Crabs in Sindangkerta Beach includes the category of clustering (Id > 1) and uniform (Id < 1)

Integrated optical source of polarization entangled photons at 1310 nm

We report the realization of a new polarization entangled photon-pair source based on a titanium-indiffused waveguide integrated on periodically poled lithium niobate pumped by a CW laser at $655 nm$. The paired photons are emitted at the telecom wavelength of $1310 nm$ within a bandwidth of $0.7 nm$. The quantum properties of the pairs are measured using a two-photon coalescence experiment showing a visibility of 85%. The evaluated source brightness, on the order of $10^5$ pairs $s^{-1} GHz^{-1} mW^{-1}$, associated with its compactness and reliability, demonstrates the source's high potential for long-distance quantum communication.Comment: There is a typing mistake in the previous version in the visibility equation. This mistake doesn't change the result

From the stable to the exotic: clustering in light nuclei

A great deal of research work has been undertaken in alpha-clustering study since the pioneering discovery of 12C+12C molecular resonances half a century ago. Our knowledge on physics of nuclear molecules has increased considerably and nuclear clustering remains one of the most fruitful domains of nuclear physics, facing some of the greatest challenges and opportunities in the years ahead. The occurrence of "exotic" shapes in light N=Z alpha-like nuclei is investigated. Various approaches of the superdeformed and hyperdeformed bands associated with quasimolecular resonant structures are presented. Evolution of clustering from stability to the drip-lines is examined: clustering aspects are, in particular, discussed for light exotic nuclei with large neutron excess such as neutron-rich Oxygen isotopes with their complete spectroscopy.Comment: 15 pages, 5 figures, Presented at the International Symposium on "New Horizons in Fundamental Physics - From Neutrons Nuclei via Superheavy Elements and Supercritical Fields to Neutron Stars and Cosmic Rays" held at Makutsi Safari Farm, South Africa, December 23-29, 2015. arXiv admin note: substantial text overlap with arXiv:1402.6590, arXiv:1303.0960, arXiv:1408.0684, arXiv:1011.342

Surface runoff estimation using geographic information system and soil conservation service-curve number method for sub catchments of Karamadai, Tamil Nadu

Water conservation becomes essential as the resource becomes scarcer. The most important step in managing water resources is estimating watershed runoff generated from rainfall, as the runoff and rainfall are the key factors in determining water availability for surface storage and groundwater recharge. So, this study is mainly focused on estimating the surface runoff generated from the three sub-catchments of Karamadai, Tamil Nadu, India, using the heavy to extreme daily rainfall events received in the study area within the span of 20 years (2000–2019). The study was performed in the ArcGIS environment using remote sensing data. The SCSCN (Soil Conservation Service-Curve Number) method was used to estimate surface runoff. The changes in the land use in each sub-catchment were analysed in each decade and studied for their impact on the runoff depth. The land use and land cover classification map of the study area was prepared from LISS III satellite imagery for the years 2006 and 2016 by using supervised classification. The curve number was assigned based on land use as well as the hydrologic soil group. The weighted curve number was calculated from the area under each land use and then used to calculate storm runoff. The maximum runoff occurred in 2011 in all the catchments of the Karamadai block. It was found that more runoff occurred in the Mandrai Pallam catchment compared to Periya Pallam and Pare Pallam, as the Mandrai Pallam catchment had less soil moisture retention capacity than the other two catchments. So, more priority must be given to this catchment while planning to implement the soil and water conservation measures

Catechol O-methyl transferase and dopamine D2 receptor gene polymorphisms: evidence of positive heterosis and gene–gene interaction on working memory functioning.

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PERFORMANCE OF CLONES RESULTED FROM POLYCROSSES BETWEEN POJ 2878 AND SIL 04, 6535, 31235

Increasing plant productivity to increase sugar production can be done by developing new superior varieties from crossing superior sugarcane clones. The research aimed to obtain clones from crossing with higher sugar yields than the female parents. The study was done at IP2TP Karangploso, Malang, Indonesia, from December 2020 to November 2022. As many as 24 clones from polycross and one female parent were arranged in a Randomized Block Design with 2 replications. The results showed that 11 polycross clones (19/P3/2, 19/P3/4, 19/P3/7, 19/P3/10, 19/P3/13, 19/P3/16, 19/P3/17, 19/P3/20, 19/P3/28, 19/P3/32, and 19/P3/34) produced sugar 15.54-105.04% higher than the female parent (6.19 t/ha)

IMPROVING GROWTH AND PRODUCTIVITY OF POJ 2878 THROUGH BIPARENTAL CROSSING

The increase in sugar demand over the last 5 years has led to efforts to increase sugar production, including creating new superior varieties; the biparental crossing is one way to produce new superior varieties. The study was done at IP2TP Karangploso, Malang, Indonesia, from December 2020 to November 2022; it aims to obtain potential clones that produce higher crystals than female parents. Seventeen clones resulting from crosses and one female parent (POJ 2878) were arranged in a Randomized Block Design with 2 repetitions. The results showed that apart from clone 19/18/10, all clones tested produced sugar yield at 5.94-10.88 t/ha, which increased 72.87% from the female parent (4.93 t/ha). Of the clones that experienced an increase, 9 clones (19/3/2, 19/3/4, 19/3/5, 19/3/8, 19/3/11, 19/3/14, 19/ 3/15, 3/19/16, and 3/19/19) showed an increase in sugar yield by 74.83-120.57%, or more than 72.87% of the female parents. The increase in sugar yield occurs through increased sugarcane productivity

The Active Target Time Projection Chamber at NSCL

Reactions in inverse kinematics close to the Coulomb barrier offer unique opportunities to study exotic nuclei, but they are plagued by the difficulty to efficiently and precisely measure the characteristics of the emerging particles. The Active Target Time Projection Chamber (AT-TPC) offers an elegant solution to this dilemma. In this device, the detector gas of the time projection chamber is at the same time the target in which nuclear reactions take place. The use of this new paradigm offers several advantages over conventional inert target methods, the most significant being the ability to increase the luminosity of experiments without loss of resolution. The AT-TPC and some results obtained on resonant α scattering to explore the clustering properties of neutron-rich nuclei are presented, as well as fusion cross section results using a 10Be radioactive beam. In addition, the first re-accelerated radioactive beam experiment using the fully commissioned ReA3 linac was conducted recently at the NSCL with the AT-TPC, where proton resonant scattering of a 4.6 MeV/u 46Ar beam was used to measure the neutron single-particle strength in 47Ar