Spatial distribution of introduced brook trout Salvelinus fontinalis (Salmonidae) within alpine lakes: evidences from a fish eradication campaign

Brook trout Salvelinus fontinalis have been used worldwide to stock fishless alpine lakes, negatively affecting native biota. Understanding its spatial ecology in invaded ecosystems can provide information to interpret and contrast its ecological impact. We opportunistically used capture points of brook trout gillnetted during an eradication campaign to assess the distribution patterns of four unexploited populations inhabiting high-altitude lakes. The main eradication method implies the use of many gillnets with several mesh sizes, which are selective for different fish sizes. For each lake we drew six capture maps associated with as many different mesh sizes, and we tested whether the distance from the coastline (which in alpine lakes is a reliable proxy of the most important spatial gradients, e.g. depth, temperature, prey availability, lighting conditions) influences the proportion of captured fish belonging to different size classes and the number of fish captured by the nets with different mesh sizes. To interpret the results, we also provide a cartographic description of the lakes’ bathymetry and littoral microhabitats. We found (1) a negative relationship between brook trout distribution and the distance from the coastline in all of the size classes, lakes and mesh sizes; (2) that large brook trout can thrive in the lakes’ center, while small ones are limited to the littoral areas; and (3) that the distance from the coastline alone cannot explain all the differences in the catch densities in different parts of the lakes. As in their native range, introduced brook trout populations also have littoral habits. Microhabitats, prey availability and distance from the spawning ground are other likely factors determining the distribution patterns of brook trout populations introduced in alpine lakes. The obtained results also provide useful information on how to plan new eradication campaigns

Pengaruh Jumlah Wisatawan dan Jumlah Obyek Wisata terhadap Pendapatan Asli Daerah Kabupaten Sumenep Tahun 2015-2022

This research aims to determine the effect of the number of tourists and the number of tourist attractions on the local revenue (PAD) of Sumenep Regency for the 2015-2022 period. The type of research used is quantitative and secondary data. The population of this study is all data on the number of tourists, tourist attractions and local revenue (PAD) from the 2015-2022 period. The sample for this research is annual data on the number of tourists, number of tourist attractions and local income for Sumenep Regency for 2015-2022. The method used in sampling this research is the saturated sample method. Data collection in this research used documentation techniques. Data were analyzed using multiple linear regression analysis methods. This research obtained results that the number of tourists did not have a significant effect on local original income in 2015-2022, the number of tourist attractions had a positive and significant effect on local original income in 2015-2022, and the number of tourists and the number of tourist attractions did not have a simultaneous effect on local original income. Sumenep Regency 2015-2022.Riset ini bertujuan untuk mengetahui pengaruh jumlah wisatawan dan jumlah obyek wisata terhadap pendapatan asli daerah (PAD) Kabupaten Sumenep periode 2015-2022. Jenis penelitian yang digunakan adalah kuantitatif dan data sekunder. Populasi penelitian ini adalah seluruh data jumlah wisatawan, obyek wisata dan pendapatan asli daerah (PAD) dari periode 2015-2022. Sampel penelitian ini yaitu data tahunan dari jumlah wisatawan, jumlah obyek wisata dan pendapatan asli daerah Kabupaten Sumenep tahun 2015-2022. Metode yang digunakan dalam pengambilan sampel penelitian ini yaitu metode sampel jenuh. Pengumpulan data dalam penelitian ini menggunakan teknik dokumentasi. Data dianalisis menggunakan metode anaisis regresi linear berganda. Penelitian ini memperoleh hasil bahwa jumlah wisatawan tidak berpengaruh signifikan terhadap pendapatan asli daerah tahun 2015-2022, jumlah obyek wisata berpengaruh positif dan signifikan terhadap pendapatan asli daerah tahun 2015-2022, serta jumlah wisatawan dan jumlah obyek wisata tidak berpengaruh secara simultan terhadap pendapatan asli daerah Kabupaten Sumenep tahun 2015-2022

Inferior alveolar and lingual nerve injuries: An overview of diagnosis and management

Oral and maxillofacial surgery operations are susceptible to cause injury to terminal branches of the trigeminal nerve. The mandibular division is more prone to injury than ophthalmic and maxillary nerves. Inferior alveolar branch of the trigeminal nerve is the most commonly injured branch, followed by the lingual nerve. These nerves may be subjected to neurosensorial disturbance during third molar surgery, followed by sagittal split ramus osteotomy, endodontic therapy and dental implant placement. Local anesthetic injections, pre-prosthetic surgery, various other types of orthognathic surgery, ablative tumor surgery involving mandibular resections, osteoradionecrosis, osteomyelitis or maxillofacial trauma are among other potential etiologic factors. If an inferior alveolar or lingual nerve injury occurs, a timely diagnosis and a proper management are key factors to avoid further or permanent damage. A wide range of therapeutic modalities are available in managing nerve injuries, ranging from simple observation to complex grafting, depending on various factors. Data regarding nerve injuries may not always be reliable since most are based upon personal experience and in a retrospective nature. It is also challenging to draw proper conclusions from studies on nerve injuries due to the differences in outcome criteria and assessment methods. Still, an accurate knowledge of anatomy should be combined with both clinical and radiological data to avoid any nerve-related complications. Thus, this article will present a narrative review of the current literature on the inferior alveolar and lingual nerve injuries, focusing on the functional assessment methods, factors influencing recovery, the contemporary management protocols as well as future trends in nerve repairs

Analisis Faktor Risiko Kejadian Hipertensi pada Masyarakat di Pesisir Sungai Siak Kecamatan Rumbai Kota Pekanbaru

Hypertension was one of the deases which often caused cardiovascular disorder and the reason from enhance of death number because of cardiovascular disorder that come from hypertension, was to know the hypertension risk factor and do the prevention. In Indonesia, hypertension was serious problem, beside because of the high prevalension, also the disease came from that is fatal like heart disease, stroke, kidney failure and others. Arm of this experiment to get information about the amount of risk factor which adhere or cannot be change and the risk factor which can be change as hypertension risk factor. The experiment was kind of observasional analytic experiment with case control study. Number of respondent is 78 sample, consist of 39 cases and 39 control. Sample collected was using consecutive sampling method. The data was analyzing bivariat and multivariat with regression logistic method, using SPSS program. Experiment result shows that there were 3 risk factor which related to hypertension event that was physical activity (p=0,000; OR=13,47; 95% CI=3,52-51,58), obecity (p=0,002; OR=6,46; 95% CI=1,95-21,47) dan stress (p=0,016; OR=0,196; 95% CI=0,05-0,74)

Two-steps versus one-step solidification pathways of binary metallic nanodroplet

The solidification of AgCo, AgNi, and AgCu nanodroplets is studied by molecular dynamics simulations in the size range of 2-8 nm. All these systems tend to phase separate in the bulk solid with surface segregation of Ag. Despite these similarities, the simulations reveal clear differences in the solidification pathways. AgCo and AgNi already separate in the liquid phase, and they solidify in configurations close to equilibrium. They can show a two-step solidification process in which Co-/Ni-rich parts solidify at higher temperatures than the Ag-rich part. AgCu does not separate in the liquid and solidifies in one step, thereby remaining in a kinetically trapped state down to room temperature. The solidification mechanisms and the size dependence of the solidification temperatures are analyzed, finding qualitatively different behaviors in AgCo/AgNi compared to AgCu. These differences are rationalized by an analytical model

Parabolic stable surfaces with constant mean curvature

We prove that if u is a bounded smooth function in the kernel of a nonnegative Schrodinger operator $-L=-(\Delta +q)$ on a parabolic Riemannian manifold M, then u is either identically zero or it has no zeros on M, and the linear space of such functions is 1-dimensional. We obtain consequences for orientable, complete stable surfaces with constant mean curvature $H\in\mathbb{R}$ in homogeneous spaces $\mathbb{E}(\kappa,\tau)$ with four dimensional isometry group. For instance, if M is an orientable, parabolic, complete immersed surface with constant mean curvature H in $\mathbb{H}^2\times\mathbb{R}$, then $|H|\leq 1/2$ and if equality holds, then M is either an entire graph or a vertical horocylinder.Comment: 15 pages, 1 figure. Minor changes have been incorporated (exchange finite capacity by parabolicity, and simplify the proof of Theorem 1)

Prototipo de automatismo para la alimentación de peces abastecido por energía solar fotovoltaica

Este artículo presenta un circuito electrónico destinado a automatizar la dosificación de alimento balanceado, en la producción intensiva de peces. El prototipo desarrollado permite entregar una tasa diaria de alimento, calculada por el circuito, considerando la temperatura del agua, especie, cantidad y edad de los peces cultivados. El circuito funciona con energía solar fotovoltaica y/o a través de la red eléctrica de distribución. En este trabajo se explican las características relacionadas con la alimentación de los peces durante su cría, el funcionamiento y las características fundamentales del prototipo, como así también el dimensionamiento de su fuente de alimentación. Los ensayos de laboratorio arrojaron resultados positivos. La propuesta contribuirá a mejorar la producción regional de peces, ya que permitirá dosificar una cantidad adecuada de alimento en los horarios apropiados, impidiendo faltantes y excesos del mismo, evitando pérdidas económicas asociadas a la alimentación y además reduciendo el trabajo del piscicultor.This paper presents an electronic circuit designed to automate the balanced feed dosage in intensive fish production. The prototype developed allows to deliver a daily feed rate of, calculated by the circuit, considering the water temperature, species, number and age of farmed fish. The circuit operates with solar photovoltaic and / or through the electrical distribution network. In this paper the characteristics associated with feeding fish during their breeding operation and the fundamental characteristics of the prototype, as well as the sizing of your power supply are explained. The evaluations of laboratory gave positive results. The proposal will contribute to improving regional fish production, as it will dosing an adequate amount of food at appropriate times, prevent shortages and excesses of it, avoiding economic losses associated with food and also reducing the work of the farmer fish.Asociación Argentina de Energías Renovables y Medio Ambiente (ASADES

Dissecting the polar dichotomy of the noncondensable gas enhancement on Mars using the NASA Ames Mars General Circulation Model

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/95628/1/jgre2298.pd