bluuebunny/crossref_metadata_2025 huggingface dataset:
Callitrichids at Belfast Zoological Gardens, Northern Ireland
Authors: Buchanan-Smith Hannah M. , Hardie Scott M. , Prescott Mark , Stronge John , Challis Mark
Published: December 2023

Belfast Zoological Gardens has an excellent callitrichid collection that includes representatives from all five genera (see Table 1). Although the zoo has been at the picturesque Cave Hill site since 1934, the development of a new zoo began in 1977. Rather than modifying and upgrading existing enclosures, the new zoo was started from scratch higher up the hill. Careful research ensured that the designs of the new enclosures met the behavioural needs of the animals. Great emphasis has also been placed on allowing optimum viewing for the public. As a result, Belfast has excellent exhibits, and this has been recognised by outside organisations, for instance the gorilla house recently received an award from the Universities Federation for Animal Welfare (UFAW). The purpose of this article is to describe the housing and husbandry of the callitrichid collection at Belfast and to examine their breeding records over the past 10 years.
IUCN/SSC Primate Specialist Group triennial report 1994-1996
Authors: Mittermeier Russell A. , Rylands Anthony B. , Eudey Ardith A. , Rodriguez-Luna Ernesto , Butynski Thomas
Published: December 2023

No abstract
Cytogenetic and phylogenetic studies of Alouatta from Brasil and Argentina
Authors: Oliveira Edivaldo H. Corrêa
Published: December 2023

No abstract
Crossing the great barrier: Callicebus cupreus discolor north of the Napo river
Authors: Brooks Daniel M. , Pando-Vasquez Lucio
Published: December 2023

No abstract
La denticion de Callicebus y el morfotipo ancestral de los platirrinos
Authors: Tejedor Marcelo F.
Published: December 2023

No abstract
Recent observations of Nicaraguan primates and a preliminary conservation assessment
Authors: Crockett Carolyn M. , Brooks Robert D. , Meacham Ryan Crockett , Meacham Sally Crockett , Mills Melanie
Published: December 2023

No abstract
Aggressive response toward intruders by captive male Leontopithecus chrysomelas
Authors: Moura Antônio Christian de A. , Porfírio Simone , Alonso Carmen
Published: December 2023

No abstract
A study of the black uakari, Cacajao melanocephalus melanocephalus, in the Pico da Neblina National Park, Brazil
Authors: Boubli Jean Phillipe
Published: December 2023

No abstract
Multiple simultaneous breeding females in a pygmy marmoset group (Cebuella pygmaea)
Authors: Schröpel Michael
Published: December 2023

No abstract
The effect of rainfall seasonality on the geographic distribution of neotropical primates
Authors: Pastor-Nieto R. , Williamson D. K.
Published: December 2023

No abstract
A broad-band contact call by female mantled howler monkeys: implications for heterogeneous conditions
Authors: Jones Clara B.
Published: December 2023

No abstract
Temporal and acoustic properties of long-distance calls of the masked titi monkey, Callicebus personatus
Authors: Martins Milene M. , Silva Adelaide H. P.
Published: December 2023

No abstract
Mitochondrial DNA sequences and the taxonomic status of Alouatta seniculus populations in northeastern Amazonia
Authors: Figueiredo Wilsea B. , Carvalho-Filho Nelson M. , Schneider Horacio , Sampaio Iracilda
Published: December 2023

No abstract
Preliminary observations on handedness in wild tamarins (Saguinus spp.) and titi monkeys (Callicebus cupreus)
Authors: Bicca-Marques Júlio César , Nunes Claudio Arani , Schacht Karin
Published: December 2023

No abstract
Monos aulladores (Alouatta palliata), escarabajos coprófagos y la fragmentación de las selvas em Los Tuxlas, Veracruz, México
Authors: Dadda Alberto Anzures , Estrada Alejandro , Coates-Estrada Rosamond
Published: December 2023

No abstract
new data and a historical sketch on the geographical distribution of the Ka’apor capuchin, Cebus kaapori Queiroz, 1992
Authors: Silva Junior José Sousa , Cerqueira Rui
Published: December 2023

No abstract
An early report on tool use by neotropical primates
Authors: Urbani Bernardo
Published: December 2023

No abstract
Vertebrate predation in common marmosets
Authors: Digby Leslie , Barreto Claudio Embirussu
Published: December 2023

No abstract
Fission-fusion in the black-headed uacari (Cacajao melanocephalus) in eastern Colombia
Authors: Defter Thomas R.
Published: December 2023

No abstract
Species status of the colombian spider monkey, Ateles belzebuth hybridus
Authors: Collins Andrew C.
Published: December 2023

No abstract
Preliminary observations on the songo songo (dusky titi monkey, Callicebus moloch) of northeastern Ecuador
Authors: Youlatos Dionisios , Rivera Wilmer Pozo
Published: December 2023

No abstract
Potential competitors for exudates eaten by saddleback (Saguinus fuscicollis) and moustached (Saguinus mystax) tamarins
Authors: Smith Andrew C.
Published: December 2023

No abstract
Patrones de actividad de Alouatta palliata em um fragmento de selva em Los Tuxtlas, México
Authors: Martínez Teresita de Jesús Ortíz , Solano Saúl Juan , Estrada Alejandro , Coates-Estrada Rosamond
Published: December 2023

No abstract
Preliminary study of the effects of ecotourism and human traffic on the howling behavior of red howler monkeys, Alouatta seniculus, in Ecuadorian Amazonia
Authors: De la Torre Stella , Snowdon Charles T. , Bejarano Monserrat
Published: December 2023

No abstract
A preliminary study of mantled howling monkey (Alouatta palliata) ecology and conservation on Isla de Ometepe, Nicaragua
Authors: Garber Paul A. , Pruetz Jill D. , Lavallee A. C. , Lavallee S. G.
Published: December 2023

No abstract
Prosthenorchis elegans (Oligacanthorhynchida, Oligacanthorhynchidae) and Dipetalonema sp. (Spirurida, Onchocercidae) in Saimiri sciureus (Primates, Cebidae) in Brazil
Authors: Oliveira Jaqueline Bianque , Silva Alessandro César Jacinto , Soares Carla Abreu , Medeiros Adolphe
Published: December 2023

No abstract
Novos registros de Alouatta no estado do Ceará (Primates, Atelidae)
Authors: Guedes Patrícia G. , Borges-Nojosa Diva M. , Silva Juliana A. G. , Salles Leandro O.
Published: December 2023

No abstract
Female dispersal in the Belizean black howling monkey (Alouatta pigra)
Authors: Brockett Robin C. , Horwich Robert , Jones Clara B.
Published: December 2023

No abstract
Update on the status of the Margarita Island capuchin, Cebus apella margaritae
Authors: Martinez Romari A. , Moscarella Rosa , Aguilera Marisol , Marquez Eladio
Published: December 2023

No abstract
Primate records from the Potaro plateau, western Guyana, including the first for Cebus albifrons east of the Rio Branco, Brazil
Authors: Barnett Adrian A. , Shapley Rebecca , Lehman Shawn , Mayor Mireya , Benjamin Paul , McGarrill Michael , Nagala Ruford
Published: December 2023

No abstract
An assessment of the diversity of New World primates
Authors: Rylands Anthony B. , Schneider Horacio , Langguth Alfredo , Mittermeier Russell A. , Groves Colin P. , Rodríguez-Luna Ernesto
Published: December 2023

An understanding of the full diversity of the primates is vital for priority-setting for conservation purposes, both for captive breeding and in situ conservation measures. Here we provide a full, annotated listing of the Neotropical primate species and subspecies resulting from a workshop, “Primate Taxonomy for the New Millennium”, which brought together experts in primate taxonomy and biogeography, morphologists and geneticists. It was organized by the IUCN/SSC Primate Specialist Group (PSG) and held at the Disney Institute, Orlando, Florida, in February 2000. The list separates the Platyrrhini into five families (Callitrichidae, Cebidae, Aotidae, Pitheciidae and Atelidae), 18 genera (Cebuella, Mico, Callithrix, Saguinus, Leontopithecus, Callimico, Saimiri, Cebus, Aotus, Callicebus, Pithecia, Chiropotes, Cacajao, Alouatta, Ateles, Lagothrix, Oreonax and Brachyteles), 110 species, and 205 species and subspecies.
Alternative male reproductive behaviors in the Belizean black howler monkey (Alouatta pigra)
Authors: Horwich Robert H. , Brockett Robin C. , Jones Clara B.
Published: December 2023

No abstract
Distribuição do sagüi (Callithrix jacchus) nas áreas de ocorrência do mico-leão-dourado (Leontopithecus rosalia) no estado do Rio de Janeiro
Authors: Ruiz-Miranda Carlos R. , Affonso Adriana G. , Martins Andréia , Beck Benjamin
Published: December 2023

No abstract
Twinning in semi-free ranging capuchin monkeys (Cebus apella)
Authors: Mannu Massimo , Ottoni Eduardo B.
Published: December 2023

No abstract
Hunting impact on Neotropical primates: a preliminary case study in French Guiana
Authors: Thoisy Benoît , Massemin David , Dewynter Maël
Published: December 2023

No abstract
Cultural practices benefitting primate conservation among the Guajá of eastern Amazonia
Authors: Cormier Loretta
Published: December 2023

No abstract
A study of spider monkeys (Ateles geoffroyi vellerosus) in the forest of the crater of Santa Marta, Veracruz, México
Authors: Silva-López Gilberto , Jiménez-Huerta Joaquín
Published: December 2023

No abstract
New localities for Coimbra-Filho's titi monkey, Callicebus coimbrai, in north-east Brazil
Authors: Sousa Marcelo Cardoso
Published: December 2023

No abstract
Distribution of brown capuchin monkeys (Cebus apella) in Venezuela: a piece of the puzzle
Authors: Boher-Bentti Salvador , Cordero-Rodríguez Gerardo A.
Published: December 2023

No abstract
Records of howlers (Alouatta) on the Azuero Peninsula and Canal Zone of Panama
Authors: Rowe Noel
Published: December 2023

No abstract
Distribution and conservation of the spider monkey (Ateles hybridus) in the coastal range of northern Venezuela
Authors: Cordero-Rodríguez Gerardo A. , Biord Hernán J.
Published: December 2023

No abstract
Primates of the Chapada das Mangabeiras, Piauí, Brasil: a northern extension to the range of Alouatta caraya
Authors: Flesher Kevin
Published: December 2023

No abstract
Primatas da região do rio Tapajós, Pará, Brasil
Authors: Vaz Sergio Maia
Published: December 2023

No abstract
Body weights before and after first pregnancies of immigrant adult female mantled howling monkeys (Alouatta palliata) in Costa Rica
Authors: Zucker Evan L. , Clarke Margaret R. , Glander Kenneth E.
Published: December 2023

No abstract
Densidade e conservação do bugio (Alouatta fusca) no Parque Estadual Intervales
Authors: Steinmetz Sandra
Published: December 2023

No abstract
Alouatta guariba clamitans Cabrera, 1940: a new southern limit for the species and for Neotropical primates
Authors: Printes Rodrigo C. , Liesenfeld Marcus V. A. , Jerusalinsky Leandro
Published: December 2023

No abstract
Two taxonomies of the New World Primates – a comparison of Rylands et al. (2000) and Groves (2001)
Authors: Rylands Anthony B.
Published: December 2023

No abstract
Western extension of the range of bearded sakis: a possible new taxon of Chiropotes sympatric with Cacajao in the Pico da Neblina National Park, Brazil
Authors: Boubli Jean Philippe
Published: December 2023

No abstract
Neotropical ethnoprimatology: an annotated bibliography
Authors: Urbani Bernardo
Published: December 2023

No abstract
Neotropical Primate remains in cave deposits: an annotated bibliography
Authors: Urbani Bernardo
Published: December 2023

No abstract
The true identity and characteristics of Simia albifrons Humboldt, 1812: description of neotype
Authors: Defler Thomas R. , Hernández-Camacho Jorge I.
Published: December 2023

The historic holotypic description of Alexander von Humboldt for the primate Simia albifrons contains obvious errors which have created various taxonomic problems, since it has been impossible to compare descriptions of subspecies with an original holotype, which was never preserved. An historic taxonomic error was the recognition of Cebus albifrons unicolor as a different taxon from Cebus albifrons albifrons, which we correct in this paper by the recognition of Cebus albifrons unicolor as a synonym for Cebus albifrons albifrons. We describe Cebus albifrons albifrons for the first time, based on a neotype collected by us close to the type locality. Additionally, confusions about the type locality are discussed and clarified. Maypures is established as the correct type locality. General information on the geographic distribution and natural history of the species and subspecies is also provided.
Estudo preliminar do monitoramento do bugio ruivo, Alouatta guariba clamitans, através da contagem de bolos fecais no Parque Estadual de Itapuã, Rio Grande do Sul, Brasil
Authors: Buss Gerson , Romanowski Helena P.
Published: December 2023

No abstract
Rediscovery of Brachyteles arachnoides hypoxanthus at the Fazenda Córrego de Areia, Minas Gerais, Brazil
Authors: Hirsch André , Dias Luiz Gustavo , Martins Waldney Pereira , Porfírio Simone
Published: December 2023

No abstract
Um caso de rapto ou transferência acidental de um infante entre bandos vizinhos de Alouatta guariba clamitans
Authors: Fortes Vanessa Barbisan
Published: December 2023

No abstract
On the diagnostic characters and geographic distribution of the “yellow-handed” titi monkey, Callicebus lucifer, in Peru
Authors: Heymann Eckhard W. , Encarnación Filomeno , Soini Pekka
Published: December 2023

No abstract
Squirrel monkey (Saimiri sciureus) rehabilitation in French Guiana: a case study
Authors: Vogel Ingrun , Glöwing Brigitte , Pierre Isabelle Saint , Bayart Françoise , Contamin Hugues , Thoisy Benoît
Published: December 2023

No abstract
The description of a new marmoset genus, Callibella (Callitrichinae, Primates), including its molecular phylogenetic status
Authors: Van Roosmalen Marc G.M. , Van Roosmalen Tomas
Published: December 2023

This paper describes a new genus of Amazonian marmosets, the dwarf marmoset Callibella, formerly identified as Callithrix humilis (Van Roosmalen et al., 1998), and reports its phylogenetic relationship to other callitrichines, based on 902 base pairs (bp) of the mitochondrial control region DNA sequence. The molecular data indicate an early divergence of Callibella humilis, prior to the divergence of Cebuella pygmaea from the ancestral Amazonian marmoset stock. The high degree of divergence of this new taxon warrants its placement in a distinct genus, Callibella. New observations from the morphology, physiology, ecology, and ethology of the dwarf marmoset are presented which support this classification.
Environmental education: a teaching tool for the conservation of pygmy marmosets (Cebuella pygmaea) in the Ecuadorian Amazon
Authors: De la Torre Stella , Yépez Pablo
Published: December 2023

No abstract
The discovery of a new population of black lion tamarins (Leontopithecus chrysopygus) in the Serra de Paranapiacaba, São Paulo, Brazil
Authors: Röhe Fabio , Antunes André Pinassi , Tófoli Cristina Farah
Published: December 2023

No abstract
On the occurrence of the black lion tamarin (Leontopithecus chrysopygus) in Buri, São Paulo, Brazil
Authors: Lima Fernando Silva , Silva Izabel Cristina , Martins Cristiana Saddy , Valladares-Pádua Cláudio
Published: December 2023

No abstract
Dieta, área de vida, vocalizações e estimativas populacionais de Alouatta guariba em um remanescente florestal no norte do estado do Paraná
Authors: Aguiar Lucas de Moraes , Reis Nélio Roberto , Ludwig Gabriela , Rocha Vlamir José
Published: December 2023

No abstract
Distribuição do guigó (Callicebus coimbrai) no estado de Sergipe
Authors: Sousa Marcelo Cardoso
Published: December 2023

No abstract
Births of Alouatta caraya and A. belzebul (Atelidae, Alouattinae) in captivity in Brazil
Authors: Gomes Daniela Fichtner , Bicca-Marques Júlio César
Published: December 2023

No abstract
Reconocimiento demográfico de Alouatta pigra y Ateles geoffroyi en la reserva El Tormento, Campeche, México
Authors: Rath Tana Barrueta , Estrada Alejandro , Pozo Carmen , Calmé Sophie
Published: December 2023

No abstract
Comparación de la estructura vegetal entre fragmentos desocupados y ocupados por Alouatta palliata mexicana en el sureste de México
Authors: Arroyo-Rodríguez Víctor , Mandujano Salvador
Published: December 2023

No abstract
Uso de fragmentos por Ateles geoffroyi en el sureste de México
Authors: Zamora Arturo González , Mandujano Salvador
Published: December 2023

No abstract
Estudio poblacional de monos aulladores (Alouatta palliata mexicana) en la Isla Agaltepec, Veracruz, México
Authors: Carrera-Sánchez Edith , Medel-Palacios Guadalupe , Rodríguez-Luna Ernesto
Published: December 2023

No abstract
Group, range, and population size of Alouatta pigra at Monkey River, Belize
Authors: Pavelka Mary S. M.
Published: December 2023

No abstract
Infección por larvas de Alouattamyia baeri (Diptera: Cuterebridae) en monos aulladores, Alouatta palliata (Primates: Cebidae) de la Costa Caribe de Costa Rica
Authors: Calderón-Arguedas Olger , Troyo Adriana , Solano Mayra E. , Sánchez Ronald , Chinchilla Misael , Gutiérrez-Espeleta Gustavo A.
Published: December 2023

No abstract
Flora bacterial oral y su perfil de sensibilidad a antibióticos en monos de Costa Rica (Alouatta palliata y Ateles geoffroyi)
Authors: Gamboa-Coronado María Mar , Rodríguez-Cavallini Evelyn , Rojas-Contreras Galia , Sánchez-Porras Ronald , Gutiérrez-Espeleta Gustavo
Published: December 2023

No abstract
On the occurrence of the owl monkey (Aotus azarai) in Cerro Leon, Chaco, Paraguay
Authors: Campos Juan Manuel , Benítez Ivon , Meritt Dennis A.
Published: December 2023

No abstract
Preservation and extraction of DNA from feces in howler monkeys (Alouatta caraya)
Authors: Oklander Luciana Ines , Marino Miguel , Zunino Gabriel Eduardo , Corach Daniel
Published: December 2023

No abstract
A Survey of Black howler (Alouatta pigra) and spider (Ateles geoffroyi) monkeys along the río Lacantún, Chiapas, Mexico
Authors: Estrada Alejandro , Belle Sarie Van , Del Valle Yasminda García
Published: December 2023

No abstract
Primate species at the Tiputini Biodiversity Station, Ecuador
Authors: Marsh Laura K.
Published: December 2023

No abstract
Reproductive biology and conservation of muriquis
Authors: Strier Karen B.
Published: December 2023

This paper summarizes some of the major findings on the reproductive biology of one group of northern muriquis (Brachyteles hypoxanthus) at the RPPN Feliciano Miguel Abdala (previously known as the Estação Biológica de Caratinga). Long-term monitoring of individual members of the Matão group, combined with non-invasive fecal sampling to measure hormone levels, provide insights into ovarian function, reproductive seasonality, and factors that influence individual and population reproductive rates. All of these parameters have direct applications for assessing the long-term viability of this population, and for conservation of this critically endangered species. These findings were presented at the first meeting of the Committee for the Conservation and Management of the Muriqui (IBAMA), held in Teresópolis, Rio de Janeiro, in October 2002; more recent data have been added or are included in the references.
Status of the muriqui (Brachyteles) populations remaining in the state of Rio de Janeiro, Brazil: Projeto Muriqui-Rio
Authors: Garcia Vânia Luciane Alves
Published: December 2023

In his study of the status and geographic distribution of the muriqui, Brachyteles arachnoides, of the Atlantic forest, Aguirre (O mono Brachyteles arachnoides (É. Geoffroy). Situação atual da Espécie no Brasil, Acad. Brasil. Ciênc., Rio de Janeiro. 1971) documented its widespread disappearance from the state of Rio de Janeiro, identifying only six localities where it could still be found, and estimating a population of only 650 to 840 individuals. In this paper, I report on 25 survey expeditions carried out from 1999 to 2003 to verify the continued presence of muriquis in six localities in the state of Rio de Janeiro: the Serra dos Órgãos National Park, Desengano State Park, Paraíso Ecological Station, the Cairuçú Environmental Protection Area (adjoining the Serra da Bocaina National Park), the region of Macaé de Cima and the Itatiaia National Park. A total of 55 muriquis were seen in Serra dos Órgãos, Cairuçú, and Desengano. Local inhabitants reported that muriquis were now very rare in the region of Macaé de Cima and the Paraíso Ecological Station. No muriquis were seen in the Itatiaia National Park, but three specimens on show in the museum indicate that it is the northern muriqui (B. hypoxanthus) which occurs there, rather than the southern muriqui (B. arachnoides) known from the rest of the state.
In memory of Eduardo Marcelino Ventura Veado, 1960-2006
Authors: Strier Karen B. , Pinto Luiz Paulo Souza
Published: December 2023

No abstract
Calidad estructural y funcional de espacios usados por Alouatta seniculus en fragmentos de bosque seco tropical (Córdoba, Colombia)
Authors: Mesa-Sierra Natalia , Pérez-Torres Jairo
Published: December 2023

El mono aullador rojo (Alouatta seniculus) es de las pocas especies colombianas de primates que no se encuentra bajo alguna categoría de amenaza. En comparación con otras especies de primates posee una alta plasticidad ecológica, lo que le permite ocupar ambientes más variables en cuanto a tamaño de hábitat y oferta de recursos. Los bosques secos tropicales (BsT) de Colombia han sido fuertemente afectados por la implementación de sistemas ganaderos quedando un porcentaje muy bajo respecto a su distribución original y la mayoría como pequeños fragmentos. Aunque A. seniculus puede ocupar estos fragmentos, se desconoce la proporción de ocupación de estos y qué características estructurales o funcionales determinan esta ocupación. Se analizó si las características estructurales, funcionales y espaciales en dos fragmentos de BsT en la reserva natural “Betancí-Guacamayas” (Departamento de Córdoba, Colombia) explicaban el uso del espacio por parte de A. seniculus. Se encontró que las características estructurales de la vegetación explican principalmente la utilización de los espacios. Se desarrolló un índice de calidad que describe la probabilidad de ocupación de los espacios disponibles en los fragmentos por parte de la especie, teniendo en cuenta el DAP, la cobertura, el diámetro de copa y la altura de fuste.
Activity budget and ranging of a group of Madidi titis (Plecturocebus aureipalatii) in Reserva Ecólogica Taricaya, with preliminary notes on diet composition, habitat usage and additional sightings
Authors: Van der Speld Rutger F. , Bello Raúl , Hebard Laura
Published: December 2023

This study aims to provide the first data on activity budget and ranging of one group of Plecturocebus aureipalatii and give preliminary notes on habitat usage and diet composition. Additionally, censuses were carried out to determine the presence of other groups in the area. The study site was strongly impacted by human actions (i.e. selective logging, small scale agriculture and hunting), it contained secondary, mixed- and less disturbed forest. The study group consisted of three habituated adult animals, living around an eco-tourist lodge. Using the scan-sampling method, the group was investigated over the course of four months to collect data on activity budget, ranging and habitat usage. Diet composition was only investigated for a limited period, using focal animal sampling. The activity budget showed a high percentage of stationary behaviour compared to other species, while the percentage of time spent on feeding/foraging behaviour was lower. This may have been caused by the presence of plantations and therefore easily accessible fruits. Analyses of habitat usage showed a strong preference for secondary forest. Ranging and diet composition did not seem to differ from expectations based on other titi monkey species. A long-term study of more groups is recommended to get a better understanding of this species and its requirements.
Colombian black-spider monkey (Ateles fusciceps) in Tatamá National Natural Park, Western Colombia
Authors: Giraldo María Elena , Valencia Carolina Guzmán , López Luis Enrique Gallego , Patiño Luis Guillermo Gallego , Parra Libaniel Osorio , Osorio Jhon Eduar Rojas , Montalvo Ricardo José Pérez , Duque Néstor Roncancio
Published: December 2023

No abstract
Analisis Waktu Peluruhan Dini dan Waktu Dengung pada Ruang Teater
Authors: Lestari Kiki Rezki , Triputranto Andika Ahmad
Published: December 2023

In the stage of acoustic measurement of the room, a review of the research object, namely the Salihara Black Box Theater, is required. The review is conducted to obtain the necessary materials for the planning of the data collection format, such as the condition of the room when empty, examining the materials composing the surface of the room walls, as well as re-measuring the dimensions of the room and its equipment. The measurement of the room dimensions is also necessary for the empirical calculation of the Sabine reverberation time and for reproducing a model of the research object room. Moreover, it is used to consider the determination of the measurement points later on. All parameters are measured within the frequency range of 125 Hz to 4,000 Hz and taken from the perspective of comparing each receiving point. For the reverberation time (T30), values ranging from 0.6 seconds to 0.99 seconds are obtained. For the early decay time (EDT), values ranging from 0.45 seconds to 0.94 seconds are obtained. For clarity (C80), values ranging from 1.66 dB to 11.24 dB are obtained. For definition (D50), values ranging from 38.09% to 84.1% are obtained.
Pemakaian Metode ASME PTC 4.1 Pada Evaluasi Performa (Efisiensi) Boiler Pulverized Firing di Pembangkit Listrik Tenaga Uap (PLTU)
Authors: Sarwono Edy , Saputra Indra
Published: December 2023

The rankine cycle is widely used for thermal generators that use steam as a turbine driver in power generation plant. There are 4 main equipments in power plant with rankine cycle system that is: Boiler, Turbine, Condenser and Feed pump. Boiler is a tool to heat water up to steam with high temperature and pressure. Then steam goes into the turbine to drive the generator. The steam coming out of the turbine is cooled inside the condenser to be changed into liquid again. Condenser coolers are widely used in steam power plants is sea water, but some are using river water. Water becomes a working fluid in the rankine cycle and undergoes closed cycle (close loop cycle) meaning continuously water at the end of the cycle process re-entry to the early process cycle. There are several methods to calculate boiler efficiency by direct method (input method) and heat loss method (energy balanced method). The calculation by the direct method by dividing the resulting steam energy divided by the fuel energy coming into the boiler. While the calculation of boiler efficiency with heat loss method is the fuel energy that enter the boiler reduced by losses that occur in the boiler. ASME PTC 4.1 method can be used to calculate boiler efficiency at large boiler capacity, so PTC 4.1 method is often used to evaluate boiler in power plant. The ASME PTC 4.1 method is recommended for the calculation of heat-loss methods in the boiler and is often performed to review the efficiency according to the design as a benchmark.
Analisis Perbandingan Waktu Pakai Insert Die Berbahan Baja Perkakas SKD 11, ASSAB 88, dan SKH 51 untuk Produk Mur (NUT) Berbahan S45C
Authors: Paristiawan Permana Andi
Published: December 2023

The wear time of die inserts for nut products was studied in this research. The die insert material used is SKD 11, ASSAB 88 and SKH 51 tool steel, while the nut product material to be produced is S45C series carbon steel. These three die insert materials have been tested in the industry. Making nuts includes a dimensional test by measuring the dimensional tolerance of the nut and a service time test by looking at the number of products produced. This test is continued with a microhardness test on the inner side of the die insert. Use time for SKD 11 tool steel is 40,105 products with dimensional tolerance changed to 0.055 mm, ASSAB 88 tool steel is 110,703 products with dimensional tolerance changed to 0.053 mm, SKH 51 tool steel is 100,404 products with dimensional tolerance changed to 0.054 mm, micro hardness test tool steel shows that the deepest part of the die insert side is on average lower than the middle of the die insert. Insert dies made from SKD 11 have the shortest life, Insert dies made from SKH 51 have the longest life, and Insert dies made from ASSAB 88 have the highest life and are slightly higher than SKH 51. The use time for SKD 11 is two to three times, while the use time SKH 51 and ASSAB 88 are estimated to have been used more than three times.
Perancangan Sistem Safety Shut Off Valve pada Tabung LPG untuk Mencegah Bahaya Kebocoran Gas
Authors: Rahmah Fitri , Wiyono Adi
Published: December 2023

The program to convert kerosene to LPG (Liquefied Petroleum Gas) launched by the government since 2007 has had a positive impact, among other things because energy consumption has become more economical and use is relatively cleaner and easier. However, this program has negative impacts, including the potential for explosion and fire hazards due to gas leaks in the cylinders. Factors that can cause leaks in LPG cylinders are improper installation of the regulator, poor quality cylinder sealing rings, and even regulators that do not have the Indonesian National Standard (SNI). Seeing the potential for great danger due to gas leaks in LPG cylinders, the solution that can be implemented is to build a safety shut off valve system on LPG cylinders. In this paper, a safety shut off valve system is described which is designed and placed in the tube regulator section. System test results with an LPG gas concentration of 5000 ppm (parts per million) show that the average response time of the system in automatically activating the safety shut off valve is 0.55 seconds. The accuracy value of the designed system is shown through comparison with the results of mathematical calculations, namely having an error in the range of 1.76 percent - 3.43 percent at a sensor reading distance of 0 - 100 cm.
Current Status Of Global Engineering Education: Mini Review
Authors: Veza Ibham , Yusrizal Yusrizal , Idris Muhammad , Putra Nicky Rahmana , Balogun Shuaibu Alani
Published: December 2023

This mini review addresses global engineering education, its diversity, its challenges, and its geographical disparities. Engineering education is essential to sustainable development. The review stresses the need for interdisciplinary engineering that considers social, economic, and environmental concerns. Specialised engineering education packages are increasingly emphasising sustainability. This combination gives engineers the knowledge and abilities to create solutions that meet present needs while preserving resources and future generations. Despite its importance, this brief study highlights global engineering education challenges. Access to high-quality education is unequal, favouring pupils with strong math and science backgrounds. The lack of academic and student diversity may limit perspectives and innovation. Curriculum should also adapt to rapid technological change and industry needs. Internationalising engineering education is complicated by varied standards and teaching methods in different nations, making global comparison and collaboration difficult. The review compares educational systems in India, Malaysia, the US, the UK, China, Australia, Germany, and Indonesia. Regional variances are monitored by certification authorities to ensure compliance with local industry standards. The study emphasises the need for a flexible, well-planned curriculum. Optimal curriculum should align educational goals with industry-specific competencies, be flexible to meet technological developments, and be interdisciplinary. This aims not only meet student educational and career goals but also ensure a workforce with the skills and knowledge to address today's important concerns, particularly sustainability.
Perancangan dan Simulasi Sistem Absensi Mahasiswa Berbasis Mikrokontroler RFID dan NodeMCU ESP8266
Authors: Abdillah Junindo , Iswidodo Iswidodo , Arifin Zainal
Published: December 2023

The attendance system or attendance recording is a separate problem in terms of practicality, especially if the attendance process is still done manually. One of the technological advancements is the Radio Frequency Identification (RFID) system. The RFID system is widely used as a security system device. This tool is designed by combining microcontroller work with RFID technology in a system. Data in the form of a unique code from an RFID tag is used as student data. Apart from being used as a media attendance device, RFID is added to its function as an automatic classroom access open device so that when students take attendance, the classroom door lock opens too which makes it easier for students and the campus. And also this tool is combined with the ESP-32 CAM camera module which is modified so that it can read a QR code containing student data in the form of numbers, even though the code reading speed is not as fast as a scanner but it can still function the same this will make it even easier when students take attendance when you forget to bring your attendance card.
Historical and contemporary development of novel chemotype varieties with high essential oil of lemongrass in India: A review
Authors:   CSIR-Central Institute of Medicinal and Aromatic Plants, Lucknow-226015, KUMAR A , LAL RK , GUPTA AK , CHANOTIYA CS
Published: December 2023

Lemongrasses found in India encompass Cymbopogon flexuosus, C. citratus, C. khasianus, and C. pendulus. This fragrant perennial grass belongs to the Poaceae family and is indigenous to India as well as other tropical and subtropical regions in Southeast Asia and Africa. Pinpointing its precise place of origin is challenging due to its extensive history of cultivation and utilization across various cultures. It is believed to have originated in the maritime Southeast Asian region, encompassing countries like India, Sri Lanka, Indonesia, and Malaysia. Lemongrass thrives in these regions and has played a significant role in their culinary and medicinal traditions for many generations. Among these, Cymbopogon citratus, a tropical lemongrass variety, is native to multiple Asian regions, particularly Southeast Asia and South Asia. It is widely cultivated and employed in a range of global cuisines and traditional healing practices. Lemongrass finds extensive applications in the herbal, medicinal, cosmetic, pharmaceutical, and fragrance industries. Lemongrass oil is known for its diverse biological properties, which encompass antibacterial, immunomodulatory, and antioxidant effects. Not too long ago, India ranked as one of the world' leading exporters of lemongrass essential oil. Several prominent lemongrass cultivars have emerged, including GRL-1 (geraniol-rich), Krishna, Cauveri, Pragati, Praman, T-1, CIM Shikhar, Chirharit, CKP-25, SD-68, CIMAP Suwarna, and Krishnapriya. Among these, CIMAP Suwarna, Krishna, and CIM Shikhar stand out as the most widely favoured varieties across India developed at the CSIR-CIMAP in Lucknow, India. Indian universities and research institutions have also played a pivotal role in the development of novel lemongrass cultivars. Examples include Jor Lab L-2, OD-19, SD-68 (C. flexuosus), RRL-16 (C. pendulus), and CKP-25. Notably, there's Jor Lab L-9, a distinctive strain of C. khasianus known for its high methyl eugenol content. Furthermore, the germplasm for Malabar lemongrass (C. khasianus) is notable for its abundant herbage and elevated elemicin content, reaching up to 70%. The CSIR-NEIST in Jorhat and the CSIR-CIMAP, Lucknow have contributed to the development of new high geraniol-rich lemongrass cultivars, such as "Jor Lab L-15" (C. khasianus), GRL-1, and CIM Atal (C. flexuosus), respectively. b: citral, elemicin, geraniol, methyl eugenol content, vitamin A, Cymbopogon, flexuosus, Cymbopogon pendulus, Cymbopogon khasianus, Cymbopogon citratus, Lemongrass varieties Citral, Cymbopogon citratus, Cymbopogon flexuosus, Cymbopogon khasianus, Cymbopogon pendulus, Elemicin, Geraniol, Lemongrass varieties, Methyl eugenol content, Vitamin A
Role of medicinal plants as antioxidants in the treatment of oxidative stress-related human health disorders
Authors:   Department of Botany, Langat Singh College (A constituent College of BRA Bihar University), Muzaffarpur, Bihar-842001, India, KUMARI R
Published: December 2023

Oxidative stress refers to an imbalance between the production of free radicals, also known as reactive oxygen species, and the body's ability to neutralize or detoxify them within a biological system. Although free radicals are essential for several physiological functions and cell signalling, excessive production triggered by factors such as stress, xenobiotic drugs, unhealthy lifestyle habits, and poor diet can lead to oxidative stress. While the human body possesses natural defence mechanisms to counter oxidative stress to a certain extent, uncontrolled levels of free radicals can disrupt normal bodily functions, causing damage to cells and tissues. This disruption can have negative implications on the body's overall function, potentially resulting in the development of various chronic disorders. These disorders encompass inflammatory diseases, cardiovascular diseases, atherosclerosis, arthritis, cancer, neurodegenerative disorders, and diabetes, among others. Antioxidants play a pivotal role in mitigating the effects of oxidative damage. They are substances that counteract the toxic impact of free radicals within cells, thereby promoting overall health. Natural antioxidants derived from plants are particularly instrumental in reducing oxidative stress within the human body. Compounds like flavonoids and phenolics found in medicinal plants act as essential defenders against stress-induced cellular damage. Consequently, these antioxidants contribute to the treatment of stress-related ailments, including neurodegenerative problems, cardiovascular diseases, diabetes, hyperlipidaemia, atherosclerosis, and cancer – conditions that hold significant prevalence in modern-day society. Keyword: Chronic diseases, Medicinal plants, Natural antioxidants, Oxidative stress
Biological activity spectra of the main phytochemicals of Silybum marianum L. Gaertn. by in silico study
Authors:   Madras Veterinary College, Vepery, Chennai 600007, Tamil Nadu, India., RANJINI R
Published: December 2023

The main objective of bioinformatics is to augment the perception of biological data. Bioinformatics gains information from computer analysis of biological practices. Biologically active principles have both pharmaceutical and adverse effects on the organisms. PASS (Prediction of Activity Spectra for Substances) software is used to estimate the general efficacy and safety of the phytochemicals. PASS simultaneously predicts several hundreds of biological activities of natural and synthetic chemical compounds. The average precision of prediction is about 90%. The extract from the seed of Silybum marianum contains silymarin, which is a complex mixture of polyphenolic molecules, including seven closely related flavonolignans, namely, silybin A, silybin B, isosilybin A, isosilybin B, silychristin, isosilychristin, silydianin and one flavonoid namely taxifolin. Silymarin has been used to treat various hepatic diseases, including chronic and acute liver diseases in canines and felines. It is used as a nutritional supplement to treat liver diseases and toxicities and prevent certain cancers in companion animals. In the present study, the main phytochemicals reported from Silybum marianum L. Gaertn. were subjected to in-silico evaluation using PASS software. The methods, biological activity spectra and significance of the in-silico study are discussed. Keywords: Efficacy, In Silico, PASS, Phytochemicals, Silybum marianum, Toxicity
PERAN ORANG TUA SEBAGAI PENDIDIK SPIRITUAL ANAK DI LINGKUNGAN KELUARGA BERDASARKAN KITAB ULANGAN PASAL ENAM
Authors: Manteus Agus Joko , Wahyuni Sara
Published: December 2023

God gives a mandate to parents to educate their children to know and love God. Parents as leaders in the family who carry out God's commandments become the first and foremost educators for their children. Forms of education given by parents through oral teaching and exemplary life through real deeds. Every parent is obliged to educate their children from the womb. Childhood is an important period in instilling an integral education. Parents must realize that what happens in the family has a big impact on personality development, faith development and ultimately the development of children's spiritual intelligence. By using a qualitative research approach, to obtain a comprehensive study. The process of children's education must always be built within the framework of Christ's forgiving and redemptive grace, through the work of the Holy Spirit. The application of a biblical pattern of child education is only effective when it is applied to those who have experienced fellowship in Christ.
Evaluation of Uncertainty in Flatness Measurement of Coordinate Measuring Machines Based on Monte Carlo
Authors: Yang Yi , Wang Tao , Zhang Wei , Chang Yuzhou
Published: December 2023

Based on the measurement method of coordinate measuring machine flatness, establish a black box evaluation model for CMM flatness measurement uncertainty, and analyze the sources of each uncertainty. Combining measurement examples, this paper elaborates on the evaluation process of CMM flatness measurement uncertainty based on Monte Carlo, calculates the included interval and expanded uncertainty of CMM flatness, and provides reference for the evaluation of CMM flatness measurement uncertainty.
Real-time Pedestrian Tracking Based on YOLOv3 and Prototype Clustering
Authors: Li Ruopeng
Published: December 2023

Although the accuracy of existing neural network models is high, in pedestrian tracking tasks, due to the uncertainty of targets, when tracking new targets, it is necessary to fine-tune the model, which further requires large computing and storage resource overhead. Therefore, its application on some lightweight platforms, such as robots and UAVs, is limited. Pedestrian tracking by robots and UAVs still faces great challenges in occlusion, multi-target, target loss, etc. This paper mainly solves the problem of real-time pedestrian tracking by object detection model of robot lightweight, which is mainly based on YOLO network to detect pedestrians, and then proposes a novel lightweight model and prototype clustering algorithm. Numerous experiments on the ETH dataset validate the superiority and effectiveness of our approach.
Data Reconstruction of Wireless Sensor Network Based on Graph Signal
Authors: Xu Zhiyang
Published: December 2023

The environmental and other factors can cause data missing in power systems; thus, data reconstruction is of great significance. In this paper, we model the observed signal as time-varying signal based on graph signal processing (GSP) and establish an optimization problem with the objective of minimizing the error between the true signal and the reconstructed signal at the sampling points and improving the smoothness of the reconstructed signal. To solve the optimization problem, Taylor series expansion is performed on the Hessian inverse matrix of the objective function, and truncated Taylor series is used as an approximation of the Hessian inverse matrix. In the simulation, the algorithm proposed in this paper is compared with the gradient descent algorithm, and the result shows that the proposed algorithm converges faster and the reconstructed signal is more accurate.
Kampen for vandet
Authors: Haase Kirstine
Published: December 2023

Artiklen behandler middelalderbyens vandforsyning, som den optræder i det arkæologiske kildemateriale, i et praksis-teoretisk perspektiv. Vandforsyning er ikke et unikt fænomen for middelalderbyerne, men de urbane rammer skaber nogle særlige omstændigheder, der gør vandforsyningen til en kilde til mere end byernes infrastruktur. Samspillet mellem vandet, individet og samfundet kan ses som et udtryk for de sociale processer, der foregår i byen, og for de strukturer, hensigter og hverdagshandlinger, der er med til at forme livet i byen. Artiklen viser, at forandringerne i vandforsyningens materialitet afspejler en udvikling fra en forestilling om selvforsyning til en professionaliseret vandforsyning, hvor vandforsyningen i stigende grad håndteres uden for husholdningen.
Fjorden under jorden
Authors: Brieghel Signe , Jessen Nina Toudal
Published: December 2023

I sensommeren 2023 har adskillige danske dagblade vist billeder af øde fjordbunde, hvor døde fisk flyder med bugen i vejret. Det kystnære vandmiljø befinder sig i en menneskeskabt krise. Denne artikel undersøger krisens forudsætninger gennem eksempler på engvanding – og senere afvanding og dræning – i Vejle Ådal fra slutningen af 1800-tallet samt gennem byggeriet af en dæmning ved Virksund i Limfjorden i 1960’erne. Vi viser, hvordan både engvandingen med dens kontrollerede overrisling af marker og dæmningsbyggeriet baserede sig på en forestilling om, at vand kan kontrolleres, samt at vand i en produktionsforstand er underordnet jord. Artiklen argumenterer for, at denne kulturhistorie er afgørende for vandmiljøernes krisetilstand i dag.
Det performative samspil mellem digital infrastruktur og kulturelle arrangementer i den professionelle praksis i danske folkebiblioteker
Authors: Schreiber Trine , Moring Camilla
Published: December 2023

The aim of the study is to examine the recursive intertwining of humans and technology in practice in Danish public libraries. Drawing on Karen Barad´s theory of agential realism, the paper suggests that the public library is investigated not through an ontology of separateness between digital infrastructure and cultural activities, but through a relational view focusing on their constitutive entanglements. The empirical focus in the article is on material-discursive practices of professionals in Danish public libraries and consist of qualitative interviews with 32 professionals from 10 Danish public libraries carried out in autumn 2022. Through a material-discursive lens of entanglement, the study analyses the narratives of the professionals when describing their libraries and their work practices.
Based on the empirical material two themes are chosen for closer consideration. One theme is 'Cultural events, book exhibitions and front-line services´, while the other is ´Statistics of library loans and purchases of materials'. In the first theme, the digital infrastructure appears as a passive information resource. Due to budget cuts and importance of what the professionals articulate as "the institutional visibility", the digital infrastructure stays in the background in favor of cultural activities. In the second theme, it becomes clear that the digital infrastructure is no longer passive, but on the contrary very controlling for a number of practices, e.g. managing the collection, organizing the physical library and predicting users´ needs. By focusing on material-discursive practices, it becomes possible to articulate these differences and their implications. The paper concludes that the chosen analytical lens of entanglement helps to address essential consequences of digitalization, and hereby contributes to discussions of future institutional strategies for Danish public libraries.
Development of Remotely Piloted Aircraft System with Extended Endurance
Authors:   , Glīzde Nikolajs
Published: December 2023

In the Doctoral Thesis, an unmanned aircraft system for special purposes has been designed for military or law enforcement needs. The novelty of this system is the increased flight duration of the unmanned aircraft and a new type of landing system. The Thesis analyses the research that has been carried out so far in the field of unmanned aircraft systems, selects the most appropriate conceptual unmanned aerial vehicle design model, develops a computer simulation of the developed aircraft model, as well as performs conceptual and experimental dimensional analysis of unmanned aircraft systems and carries out the system design modelling and technical parameter testing in the MATLAB computer program in order to verify the systems performance and compliance of the parameters with the requirements.