scholarly journals Diversity and Distribution of Bracket Fungi in Mt. Kilakiron, Bukidnon, Philippines

2021 ◽  
Vol 13 (1) ◽  
pp. 41-50
Author(s):  
Mc Arthur Lequin Cababan ◽  
Aprille Kake Ora Jaranilla ◽  
Mariane Catayas Bastatas ◽  
Chazzel Feel Comonong Salvane ◽  
Uzziel Campuso Toldo
Keyword(s):  
Low Temperature ◽  
Nutrient Cycling ◽  
High Altitude ◽  
Environmental Factor ◽  
Trametes Versicolor ◽  
Diversity Index ◽  
Large Contribution ◽  
Floristic Survey ◽  
Symbiotic Relationships ◽  
Total Species

Fungi have a lot of important function in the bionetwork resembling to decomposition and even nutrient cycling with respect to its symbiotic relationships with trees and other plants. This study aimed to assess the diversity and distribution of bracket fungi in Mt. Kilakiron, Portulin, Pangantucan, Bukidnon. Thus, floristic survey was conducted in one of the mountain of Mindanao to provide information as to what and how many species of bracket fungi are present in Mt. Kilakioron, Bukidnon, Philippines.  40 total species belonging to 17 genera and 5 family was collected and assessed. 12 individuals of Trametes versicolor were observe which favors dwellings with low temperature and high altitude are. Additionally, study revealed that most types of bracket fungi initiate in the site are decomposers and saprophytic in nature which contributes a lot in the process of putrefaction. The species of bracket fungi in Mt. Kilakiron clearly shows abundant and provides a large contribution to the ecosystem having high Shannon diversity index. The significance of each environmental factor is discussed in relationship to the ecology of the species. Bracket fungi are reliant on the climatic and conservational settings which makes them as excellent natural pointers of ecosystem in the forests of Mindanao Island, Philippines.

scholarly journals Study on the Geological Condition Analysis and Grade Division of High Altitude and Cold Stope Slope

2021 ◽  
Vol 13 (22) ◽  
pp. 12464
Author(s):  
Ruichong Zhang ◽  
Shiwei Wu ◽  
Chenyu Xie ◽  
Qingfa Chen
Keyword(s):  
Low Temperature ◽  
High Altitude ◽  
Stable State ◽  
Geological Condition ◽  
Rock Layer ◽  
Eastern Slope ◽  
Geological Conditions ◽  
Grade Ii ◽  
Grade Division ◽  
Grade Iii

Analysis of the geological conditions of high-altitude and low-temperature stope slopes and the study of grade division are the basis for the evaluation of slope stability. Based on the engineering background of the eastern slope of the Preparatory iron mine in Hejing County, Xinjiang, we comprehensively analyse and summarize the factors that affect the geological conditions of high-altitude and cold slopes and finally determine nine geological conditions that affect the index parameters. Based on a back-propagation (BP) neural network algorithm, we establish an applicable network model to analyse the geological conditions of slopes in cold areas. The model is applied to the eastern slope to analyse and classify the geological conditions of the high-altitude and low-temperature slopes. The research results show that the skarn rock layer in the eastern slope is in a stable state and not prone to landslides, and its corresponding geological condition is Grade I; meanwhile, the monzonite porphyry rock layer is in a relatively stable state, with a potential for landslides and a corresponding geological condition Grade II. The marble rock layer is in a generally stable state, there is the possibility of landslide accidents, and the corresponding geological condition level is Grade III. The limestone rock layer is in an unstable state and prone to landslide accidents, it has a corresponding geology condition Grade IV. Therefore, the eastern slope can be divided into different geological condition regions: Zone I, Zone II, Zone III, and Zone IV, and the corresponding geological condition levels for these are Grade I, Grade II, Grade III, and Grade IV. These results may provide a basis for the stability evaluation of high altitudes and cold slopes.

scholarly journals Community Structure of Dragonfly (Ordo: Odonata) in Natural Forest and Tourist Sites Petungkriyono Forest, Central Java, Indonesia

2021 ◽  
Vol 6 (3) ◽  
pp. 67328
Author(s):  
Nur Apriatun Nafisah ◽  
R.C.Hidayat Soesilohadi
Keyword(s):  
Community Structure ◽  
Tropical Rainforest ◽  
Diversity Index ◽  
Natural Forest ◽  
Natural Forests ◽  
Community Based ◽  
Central Java ◽  
Wiener Diversity Index ◽  
Index Value ◽  
Total Species

Petungkriyono forest is a tropical rainforest with high biodiversity. The increasing tourism activities in Petungkriyono lead to land conversion. Dragonfly (order Odonata) is a good bioindicator for aquatic and terrestrial. This study aimed to compare the community structure of Odonata in natural forests and tourist sites. The method of collecting imago Odonata was done by direct searching, samples were captured using sweep netting. The results showed that the dragonflies found in all locations consisted of the same family, 2 families (Gomphidae and Libellulidae) from the suborder Anisoptera and 6 families (Calopterygidae, Chlorocyphidae, Coenagrionidae, Euphaidae Platycnemididae, and Platystictidae) from the suborder Zygoptera. The total species of dragonflies found in Sokokembang were 15 species with a total of 293 individuals, Tirta Muncar 13 species of 287 individuals, Karanggondang 17 species of 276 individuals, and Curug Lawe 14 species of 242 individuals. The highest relative abundance of individuals was in the natural forest of Sokokembang is Drepanosticta spatulifera (26.28%) and in Karanggondang Vestalis luctuosa (24.64%), while in the tourist forests of Tirta Muncar and Curug Lawe were Euphaea variegata (34.84% and 28.51 %). The structure of the Odonata community is based on the Shannon-Wiener diversity index in the natural forests of Sokokembang (2.18) and Karanggondang (2.21) at the tourist sites of Tirta Muncar (1.84) and Curug Lawe (2.11). The results showed that the structure of the Odonata community based on the level of the diversity index value, evenness index, and dominance index in natural forests and tourist sites in Petungkriyono forest was not significantly different. 

Unimpeded migration of ions in carbon electrodes with bimodal pores at an ultralow temperature of −100 °C

2019 ◽  
Vol 7 (27) ◽  
pp. 16339-16346 ◽  
Author(s):  
Xi Wang ◽  
Jiang Xu ◽  
Joselito M. Razal ◽  
Ningyi Yuan ◽  
Xiaoshuang Zhou ◽  
...  
Keyword(s):  
Energy Storage ◽  
Low Temperature ◽  
High Altitude ◽  
Space Missions ◽  
Carbon Electrodes ◽  
Discharge Energy ◽  
Energy Storage Devices ◽  
Storage Devices ◽  
Ultralow Temperature ◽  
Temperature Applications

The ability to rapidly charge (and discharge) energy storage devices at extremely low temperature (down to −100 °C) is critical for low-temperature applications such as high altitude exploration and space missions.

Tunnel Collapse Treatment Technique Research in Xinjiang Tianshan High-Altitude, Low-Temperature Mountain

2014 ◽  
Vol 580-583 ◽  
pp. 1161-1167 ◽  
Author(s):  
Chun Sheng Zhu ◽  
Xiao Hua Yang
Keyword(s):  
Low Temperature ◽  
High Altitude ◽  
Deformation Rate ◽  
Tianshan Mountains ◽  
Stress And Strain ◽  
Outlet Section ◽  
Treatment Technique ◽  
Technical Effect ◽  
Geological Conditions ◽  
Tunnel Collapse

Based on YuXiMoLeGai tunnel in G217 Cholma to the Nalati highway, aiming at the outlet section of K723+911~K723+919 collapse, through model experiment and numerical calculation combined with on-site measurement, the article studies tunnel collapse treatment technique and technical effect in xinjiang tianshan mountains in the geological conditions of high altitude, low temperature, crushing of rock mass and rock rich in water. The results show that after the CRD method, expanding the scope of the grouting construction, increasing the number of small duct grouting lock foot, strengthening methods of supporting parameters are adopted, vault subsidence deformation rate is 0.4-1.5 mm/d, peripheral convergence deformation rate is 0.5-2.2 mm/d, stress the most unfavorable right hance monthly increase in stress and strain amplitude is 3.97% and 2.35% respectively.The treatment controls the land slide body deformation and stress well.

scholarly journals Diversitas Echinodermata di Pantai Meras Kecamatan Bunaken Sulawesi Utara (Diversity of Echinoderms on the Meras Beach, Bunaken District, North Sulawesi)

2013 ◽  
Vol 3 (1) ◽  
Author(s):  
Billy R Rompis ◽  
Marnix LD Langoy ◽  
Deidy Y Katili ◽  
Adelfia Papu
Keyword(s):  
Coral Reef ◽  
Coral Reefs ◽  
Food Webs ◽  
Diversity Index ◽  
North Sulawesi ◽  
Wiener Diversity Index ◽  
Sea Grass ◽  
Coral Reef Ecosystems ◽  
Line Transects ◽  
Total Species

Abstrak Echinodermata berperan penting pada ekosistem terumbu karang sebagai bagian dari jejaring makanan. Mereka dapat bersifat herbivora, karnivora, dan/atau omnivora. Kerusakan terumbu karang di Pantai Meras akhir-akhir ini dapat mengancam Echinodermata. Informasi tentang diversitas Echinodermata di Pantai Meras masih sedikit. Oleh karena itu, penelitian tentang diversitas Echinodermata perlu dilakukan di Pantai Meras, Kecamatan Bunaken, Sulawesi Utara. Pengambilan sampel pada tiap lokasi dilakukan pada saat surut terendah dengan menarik 3 garis transek (masing-masing 100 meter) secara vertikal dari garis pantai ke arah laut. Petak kuadrat (1 x 1 meter) diletakkan dengan jarak antar kuadrat yaitu 10 meter. Hasil penelitian menunjukkan bahwa Echinodermata hidup pada habitat padang lamun, pasir dan terumbu karang baik yang hidup maupun mati. Total species yang ditemukan yaitu 8 spesies yang termasuk anggota dari 3 kelas. Kelas Asteroidea (bintang laut) sebanyak 3 spesies, Echinoidea sebanyak 4 spesies dan Kelas Holothuroidea sebanyak 1 spesies. Diversitas Echinodermata di Pantai Meras adalah antara rendah hingga sedang dengan nilai indeks diversitas Shannon-Wiener (H’) berkisar antara 0,48 – 1,31. Kata kunci: Diversitas Echinodermata, Pantai Meras, Sulawesi Utara Abstract Echinoderms have important role in coral reef ecosystems as part of the food webs. They may be herbivores, carnivores, and/or omnivores. Coral reefs destruction in Meras Beach lately can threaten Echinoderms. There was little information about Echinoderms diversity of Meras Beach. Therefore, research on Echinoderms diversity needs to be done on the Meras Beach, Bunaken District, North Sulawesi. Sampling was carried out at each location at the lowest tide. There were 3 line transects (each 100 meters) located vertically from the shoreline towards the sea. The square plots (1 x 1 meter) placed distance between plots was 10 meters. The results showed that Echinoderms occupied different habitat i.e. sea grass, sand, live and/or coral reefs. Total species found 8 species belong to members of the 3 classes. Asteroidea Class (starfish),  Echinoidea Class and Holothuroidea were respectively 3 species, 4 species and 1 species. Echinoderms diversity on the Meras Beach were low to moderate with Shannon-Wiener diversity index (H ') was 0.48 to 1.31. Keywords: Echinodermata diversity, Meras Beach, North Sulawesi Rompis dkk., Distribusi Echinodermata …. 27PENDAHULUAN

Adaptations to low temperature in high altitude insects from Mount Kenya

1981 ◽  
Vol 6 (2) ◽  
pp. 199-204 ◽  
Author(s):  
LAURITZ SØMME ◽  
KARL ERIK ZACHARIASSEN
Keyword(s):  
Low Temperature ◽  
High Altitude

Differential acclimation potential to low temperatures in two species of Lycopersicon: photosynthesis and growth

1987 ◽  
Vol 65 (7) ◽  
pp. 1303-1307 ◽  
Author(s):  
C. Eduardo Vallejos ◽  
Robert W. Pearcy
Keyword(s):  
Growth Rate ◽  
Low Temperature ◽  
High Altitude ◽  
Growth Temperature ◽  
Low Temperatures ◽  
Similar Response ◽  
Short Period ◽  
Similar Temperature ◽  
Temperature Responses ◽  
Acclimation Potential

The effect of growth temperature on the temperature responses of photosynthesis and on growth as estimated from plastochron measurements of L. esculentum, a high-altitude ecotype of L. hirsutum, and their hybrid was studied. The two species and their hybrid displayed similar temperature responses of photosynthesis when they were grown under a thermo-period of 25:18 °C. However, when the growth temperature was decreased to 12:5 °C, only L. hirsutum and the hybrid showed the ability to acclimate by increasing their photosynthetic rates at low temperatures. Growth exhibited a similar response to a shift to the low-temperature regime since the growth rate of L. esculentum was reduced to a greater extent than that of L. hirsutum. Moreover, L. hirsutum resumed growth at a faster rate after a short period of time, whereas L. esculentum did not. These results show that there are parallel differences in the capacity of photosynthesis and growth to acclimate to low temperatures between L. esculentum and the high-altitude L. hirsutum.

Oxidized porous silicon as a non-interfering support for luminescent dyes

2016 ◽  
Vol 3 (1) ◽  
Author(s):  
G. Santamaría-Juárez ◽  
E. Gómez-Barojas ◽  
E. Quiroga-González ◽  
E. Sánchez-Mora ◽  
J. A. Luna-López
Keyword(s):  
Experimental Study ◽  
Porous Silicon ◽  
Low Temperature ◽  
Thermal Oxidation ◽  
Surface States ◽  
Large Contribution ◽  
Porous Si ◽  
Host Matrix ◽  
Oxidized Porous Silicon ◽  
Pl Spectrum

AbstractThe objective of this work is to elucidate the possibility to passivate the surface states of porous Si (PSi) by thermal oxidation to be used as a passive host matrix. It is known that a large contribution to the Photoluminescence (PL) of PSi comes from defects at the surface. This PL could overlap the PL of guest materials making it difficult to identify the details of the PL spectrum of the guest. We report on an experimental study about the effect of thermal oxidation at low temperature on the PL of PSi and on the functionalization of oxidized PSi with fluorescein. The background PL is minimized allowing a better detection of fluorescein molecules adsorbed on oxidized PSi.

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