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Journal articles on the topic 'Ontogenez'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Qilichov, Azizbek Abdug'ani o'g'li, and Sayitkul Saydullaevich To'xtamishev. "MEVA O'SIMLIKLARINING INDIVIDUAL RIVOJLANISHI." RESEARCH AND EDUCATION 2, no. 4 (2023): 51–56. https://doi.org/10.5281/zenodo.7811614.

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<em>Maqola shuni ko‘rsatadiki, m</em><em>eva o‘simliklarining shaxsiy (individual) rivojlanishi, ya’ni ontogenez ularning urug‘i unib chiqishidan o‘simlikning nobud bo‘lishigacha bo‘lgan davrni o‘z ichiga oladi. Ontogenezda asosan bir-biri bilan bevosita munosabatda bo‘lgan o‘sish, rivojlanish, qarish va yosharish jarayonlari bilan boradi.</em>

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Eshimbetova, Dilbar Utebaevna. "ONTOGENEZ – TIRIK ORGANIZMLARNING INDIVIDUAL RIVOJLANISHI." PEDAGOGLAR huquqiy, tibbiy, ijtimoiy, ilmiy jurnal 11, no. 2 (2021): 21–23. https://doi.org/10.5281/zenodo.5820229.

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 Gastrulaning  tashqi  qavati  ektoderma,  ichki  qavati  entoderma  deb  ataladi.  Ektoderma va entoderma homila varaqalari, gastrula ichidagi bo‘shliq birlamchi  ichak  deb  ataladi.  U  tashqariga  birlamchi  og‘iz  orqali  ochiladi.  Keyinchalik  ektoderma bilan entodermaning o‘rtasida mezoderma rivojlanadi. G‘ovak tanlilar  va kovakichlilardagina mezoderma hosil bo‘lmaydi. Shunday qilib, gastrulatsiya  jarayonida uchta homila qavati hosil bo&lsqu

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3

Nazokat, Rustamboyeva Allashukurov Sherjan Razzakov Qahramon. "KARTOSHKANING FENOLOGIK XUSUSIYATLARI." EURASIAN JOURNAL OF ACADEMIC RESEARCH 3, no. 1 (2023): 69–72. https://doi.org/10.5281/zenodo.7572576.

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4

Xaydarova, Gulzoda, and Mushtariy Nematova. "Suyak va tog'ayli baliqlar ontogenez davri." JOURNAL OF SCIENCE-INNOVATIVE RESEARCH IN UZBEKISTAN 2, no. 5 (2024): 309–11. https://doi.org/10.5281/zenodo.11193353.

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Ushbu maqolada baliqlar katta sinfining umumiy tavsifi va sistematikasi, suyakli  va tog‘ayli baliqlar turkumlari, shuningdek baliqlar katta sinfining ekalogiyasi haqida ma'lumotlar keltirib o‘tilgan.

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Matmusayeva, Gulmirahon Arib qizi Toxirjonova Fotima Muzafarjon qizi Toxirjonova Zuxra Muzafarjon qizi. "GILOSNI FENOLOGIK FAZALARNI GULLASH VA PISHISH MUDDATLARI." SCIENCE AND INNOVATION IN THE EDUCATION SYSTEM 2, no. 7 (2023): 157–62. https://doi.org/10.5281/zenodo.8076564.

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Daraxtsimon (meva) o’simliklar xzyotida katta rivojlanish qikli — urug’dan to tabiiy nobud bo’lgunigacha o’tadigan yashash davri (ontogenez), xar yilgi kichik qikllar — fenologik fazalar farq qilinadi.

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Nurbek KUCHKAROV. "INULA GRANDISNING O‘SISHI VA RIVOJLANISHI." UzMU xabarlari 3, no. 3.1.1 (2025): 55–57. https://doi.org/10.69617/nuuz.v3i3.1.1.7951.

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Ushbu maqolada Inula grandisning introduksiya sharoitida o‘sishi va rivojlanishi, ontogenez davr va bosqichlarining ekologik omillarga bog‘liq holda kechishi, ushbu bosqichlar orasidagi kunlar oralig‘i, muhitda hosil bo‘ladigan musbat haroratlar yig‘indisining o‘simliklar rivojlanishiga ta’siri hamda fenologik tadqiqotlar natijalari yoritilgan

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Abdisalomova, Fayro'za To'ra qizi. "CUPRESSACEAE OILASIGA MANSUB THUJA OCCIDENTALIS COLUMNA FORMASINING ONTOGENEZ BOSQICHLARI VA DAVRLARI." Zamonaviy dunyoda innovatsion tadqiqotlar 2, no. 16 (2023): 124–26. https://doi.org/10.5281/zenodo.7945136.

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O‘zbekistonda tuyaning 3 ta turi va bir necha manzarali formalari introduksiya qilingan. Hozirgi kunda ko‘kalamzorlashtirishda yuqori manzarali formalari, jumladan: Thuja occidentalis L. f.columna Speath va Thuja occidentalis L. f. aurea spicata Beissn keng foydalanilmoqda. Bulardan Thuja occidentalis columna formasining ontogenez bosqichlari o‘rganildi.  

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X o d j a y o r o v a, B. "O’SMIR YOSHIDAGI BOLALAR IJTIMOIYLASHUVINING NAZARIY-METODOLOGIK ASOSLARI." 2022-yil, 3-son (133/1) ANIQ FANLAR SERIYASI 2, no. 126/2 (2021): 1–8. http://dx.doi.org/10.59251/2181-1296.v2.1262.1441.

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Ushbu maqolada ijtimoiylashuv masalalarini o’rganishning falsafiy, pedagogik, sotsiologik va ijtimoiy-psixologik yo’nalishlarini ajratish asnosida ko’rib chiqilgan va sotsiologik yo’nalish individning ijtimoiylashuvini ijtimoiy munosabatlar tizimiga kirishish uchun ma’lum bir ijtimoiy xususiyatlarni o’zlashtirish bilan aloqadorlikda, ijtimoiy-psixologik yo’nalish esa, ijtimoiylashuvda ontogenez davrida ijtimoiy me’yor, madaniy qadriyatlarni o’zlashtirish jarayoni bayon qilingan.

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Sultanova, Iftixor Baxtiyor qizi. "SHAXS RIVOJLANISHINI O'RGANISHDA ERGASH G'OZIYEVNING YONDASHUVI." GOLDEN BRAIN 1, no. 11 (2023): 55–58. https://doi.org/10.5281/zenodo.7865608.

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<em>Ushbu maqola psixologiya fanida salmoqli hissa qo‘shgan professor Ergash G‘oziyevning  shaxsni o‘rganishga qaratilgan ilmiy ishlari,bilimlarini yoritib berishga harakat qilaman.Maqolani  asosiy qismini shaxs haqida tushuncha,yosh davrlari va shaxsning ontogenez va filogenezdagi o‘rni haqida so‘z boradi.</em>

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Mannopova, Rahimaxon Pozilovna, Kamolaxon Ahmadullo qizi Mirzayeva, and Zulfizar Qobilovna Sodiqova. "MAKTABGACHA TA'LIM MUASSASASIDA TARBIYALANUVCHILARNING SOG'LOM HAYOTGA TAYYORLASHNING PSIXOLOGIK XUSUSIYATLARI VA BADANTARBIYANING SOG'LOM TURMUSH TARZIDA TUTKAN O'RNI." Eurasian Journal of Academic Research 1, no. 8 (2021): 214–21. https://doi.org/10.5281/zenodo.5726291.

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Bolalarni sog’lom hayot tarzini shakillantirish uchun ularni bog’cha yoshidan ya’ni en shakillangan vaqtdan boshlab sog’lom turmush tarziga amal qilgan holda yashash kerakligi va ularni qonun qoidalarini, ajdodlarimizdan qolgan ulkan bilimlarimizni tushuntirib, anglatib amalda bajarib borishiga va hayot tarzida amalda qo’llashiga ko’maklashib borishimiz zarur.

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Aziza PO‘LATOVA and Trobjon MAXKAMOV. "LALLEMANTIA ROYLEANA (LAMIACEAE) NING O‘SISHI VA RIVOJLANISHIGA ORGANIK O‘G‘ITLARNING TA’SIRI." UzMU xabarlari 3, no. 3.1 (2024): 100–105. http://dx.doi.org/10.69617/uzmu.v3i3.1.1732.

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Ushbu maqolada dorivor, oziq-ovqat va efir-moyli o‘simlik mallachoyning o‘sish va rivojlanishiga organik o‘g‘itlarning turi va miqdorining ta’siri o‘rganilgan. Shu bilan birga ontogenez davrlari bo‘yicha ham qisqacha ma’lumotlar keltirilgan. Tajribalarda mol, qo‘y va tovuq go‘ngidan foydalanilgan. Mol go‘ngida 3 kg/1 m2, qo‘y go‘ngida 1.5 kg/1 m2, tovuq go‘ngida 1 kg/1 m2 miqdorida bo‘lgan variantlarda o‘simlikning bo‘yi eng yuqori ko‘rsatkichni namoyon etdi. Mol go‘ngida 2,5 kg/1 m2, qo‘y go‘ngida 2,5 kg/1 m2, tovuq go‘ngida 0,5 kg/1 m2 miqdorida bo‘lgan variantlarda o‘simlikning bo‘yi eng pa

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D.M.Obidova. "Inson ontogenezida o'z jinsini qabul qilolmaslikka sabab bo'luvchi omillar tahlili." JOURNAL OF SCIENCE-INNOVATIVE RESEARCH IN UZBEKISTAN 2, no. 9 (2024): 115–18. https://doi.org/10.5281/zenodo.13851136.

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Insonning jinsiy identifikatsiyasi va jinsiy orientatsiyasi murakkab va ko‘p omilli jarayon bo‘lib, ontogenezning turli bosqichlarida shakllanadi. Ontogenez – bu individning tug‘ilishdan boshlab umrining oxirigacha o‘tadigan biologik rivojlanish jarayoni. O‘z jinsini qabul qilolmaslik masalasi ko‘pincha jinsiy identifikatsiya va gender disforiyasi bilan bog‘liq murakkab fenomen hisoblanadi. Ushbu maqola inson ontogenezida jinsini qabul qilolmaslikka olib keluvchi omillarni chuqur tahlil qilishga qaratilgan bo‘lib, biologik, psixologik va ij

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Xabibullayev, Najmiddin. "O'simliklar ontogenezining fiziologik tavsifi." Journal of Universal Science Research 2, no. 11 (2024): 304–8. https://doi.org/10.5281/zenodo.14209169.

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Ushbu maqolada o‘simliklar ontogenezining fiziologik jarayonlari batafsil yoritilgan. Ontogenez jarayoni urug‘ning unib chiqishidan boshlab qarish va o‘lim bosqichigacha bo‘lgan bosqichlarni o‘z ichiga oladi. Har bir bosqichda sodir bo‘ladigan asosiy fiziologik jarayonlar, jumladan, fotosintez, nafas olish, gormonlarning ta’siri, suv va oziq moddalar oqimi o‘rganilgan. Shuningdek, tashqi muhit omillarining – yorug‘lik, harorat, suv va oziqlanishning rivojlanish jarayoniga ta’siri tahlil qilingan. Ushbu tadqiqot o‘simlik fi

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14

Agmon, Eran, Alexander J. Gates, and Randall D. Beer. "The Structure of Ontogenies in a Model Protocell." Artificial Life 22, no. 4 (2016): 499–517. http://dx.doi.org/10.1162/artl_a_00215.

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Emergent individuals are often characterized with respect to their viability: their ability to maintain themselves and persist in variable environments. As such individuals interact with an environment, they undergo sequences of structural changes that correspond to their ontogenies. Ultimately, individuals that adapt to their environment, and increase their chances of survival, persist. This article provides an initial step towards a more formal treatment of these concepts. A network of possible ontogenies is uncovered by subjecting a model protocell to sequential perturbations and mapping th

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Chadov, B. F., and N. B. Fedorova. "Ontogenes in Drosophila Melanogaster and a Model of Speciation." Journal of Evolutionary Science 1, no. 3 (2024): 35–58. http://dx.doi.org/10.14302/issn.2689-4602.jes-24-4956.

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A new type of mutations-dominant lethals with a facultative manifestation -were discovered in D. melanogaster in 2000. These mutations were named conditional mutations. Under restrictive genetic conditions, the mutations manifest themselves as dominant lethals, whereas dominant lethality disappears under permissive conditions, displaying a set of other manifestations. The genes responsible for the emergence of conditional mutations were named ontogenes. The experiments with mutations in ontogenes have revealed the following processes: (1) genome editing in germline cells; (2) induction of high

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16

Mallayev, Muhriddin, Kayum Tangirov, Odilbek O'rolov, and Nodira Jumayeva. "ECHKILAR BACHADONI BO'YNINING POSTNATAL ONTOGENEZDAGI YOSHGA DOIR O'ZGARISH DINAMIKASI." AGROINNOVATSIYA 2, no. 2 (2024): 158–62. https://doi.org/10.5281/zenodo.14199315.

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<em>Maqolada echkilarning yangi tug‘ilgan davrdan balog‘at yoshigacha bo‘lgan vaqtgacha bachadon bo‘ynidagi morfologik o‘zgarishlarni o‘rganish bo‘yicha tadqiqotlar natijalari keltirilgan. Ular bu davrda ko‘payish organlari tizimi intensiv ravishda o‘sib boradi va bu organlarning massasining ko‘payishi hayvonlarning tana massasiga qaraganda kamroq intensiv ravishda sodir bo‘ladi, degan xulosaga kelishimizga imkon beradi.</em>

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Boltaboyev, Hamidullo. "UMUMTA'LIM MAKTABLARI O'QUVCHILARINING SOG'LOM TURMUSH TARZINI RIVOJLANTIRISH ORQALI JISMONIY MADANIYATINI TAKOMILLASHTIRISH." International education research A, no. 1/2023 (2023): 35–42. https://doi.org/10.5281/zenodo.7657437.

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Annotatsiya: Ushbu maqolada umumta’lim maktablari o‘quvchilarining sog‘lom turmush tarzini rivojlantirish orqali jismoniy madaniyatini takomillashtirishga doir taklif va tavsiyalar ishlab chiqilgan. Tadqiqot davomida adabiyotlarni nazariy tahlili va umumashtirish, pedagogik kuzatish, pedagogik nazorat, pedagogik tajriba, antropometriya, sotsiologik tadqiqotlar, matematik statistika metodlaridan foydalanildi. Sog‘lom turmush tarzining eng qiyin qoidalaridan  biri esa, o‘quvchilarda ijobiy fikrlashning saqlanishi hisoblanadi. Shuningdek, ijobiy hissiyot va ijob

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Ismoilova, Asilpashsha Rojabovna. "Ta`lim jarayonida o`smirlar tafakkurining rivojlanish xususiyatlari." Journal of Science-Innovative Research in Uzbekistan 1, no. 2 (2023): 36–41. https://doi.org/10.5281/zenodo.8015153.

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Ushbu maqolada o’smirlar psixikasida kechadigan o’zgarishlar,ularning bilish jarayonlari hamda tafakkur tushunchasi, o’smirlik davrida tafakkurning o’ziga xos xususiyatlari qay tarzda kechishi va ta’lim jarayonining o’smir tafakkurini shakllanishidagi ahamiyati haqida so’z boradi

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Mallayev, Muhriddin G'ofur o'g'li, Kayum Jurayevich Tangirov, and Xo'janazar Xudoynazarovich Safarov. "ECHKILAR URG'OCHILIK JINSIY ORGANLARINING POSTNATAL ONTOGENEZIDAGI O'ZGARISH DINAMIKASI." AGROINNOVATSIYА 2, no. 1 (2024): 183–89. https://doi.org/10.5281/zenodo.10812951.

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Echkilar postnatal ontogenezida urg‘ochilik ko‘payish organlarinig anatomik tuzilishi va morfometrik o‘zgarishlaridagi o‘ziga xosliklari va o‘sish koeffitsienti 3 kunlikdan 18 oylik bosqichda yuqori bo‘lishi, katta yoshdagi echkilar bachadonining og‘irligi dastlabki kunidan 60 oylikgacha o‘sish dinamikasini namoyon qildi.

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Campbell, Margaret J., and Brian D. E. Chatterton. "Silurian lichid trilobites from northwestern Canada: Ontogeny and phylogeny of lichids." Journal of Paleontology 83, no. 2 (2009): 263–79. http://dx.doi.org/10.1666/07-140r1.1.

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Previously unknown ontogenies of five lichid genera, Dicranopeltis, Platylichas, Borealarges, Dicranogmus and Radiolichas, are described and placed in the context provided by a review of known lichid ontogenies. Lichid phylogenies have been based on holaspid morphology alone without reference to ontogeny. To broaden knowledge of lichid phylogeny, an analysis, based on the last protaspid instar of lichids and possible sister group taxa, is conducted. The results of this analysis show that, within the lichids, the traditional subfamily groupings are not supported, and the sister group of lichids

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Schweitzer, Peter N., Roger L. Kaesler, and G. P. Lohmann. "Ontogeny and heterochrony in the ostracode Cavellina Coryell from Lower Permian rocks in Kansas." Paleobiology 12, no. 3 (1986): 290–301. http://dx.doi.org/10.1017/s0094837300013798.

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Animals evolve by changing their form and by changing the rate at which they develop. Since evolution of development through time may be directly related to the adaptation of their life histories, study of ontogeny in fossils may yield information about the ecology of extinct animals. We need to know how to measure animals' ontogeny and at what taxonomic level structural differences overshadow differences in development. Two closely related species of the Permian ostracode Cavellina were compared to determine how much of the morphological difference between them is due to differences in their

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Mądry, Wiesław, Marcin Kozak, Stanisław Pluta, and Edward Żurawicz. "Zastosowanie sekwencyjnej analizy plonu w badaniach nad uwarunkowaniem zmienności plonu owoców porzeczki czarnej (Ribes nigrum L.) na roślinie przez cechy plonotwórcze." Biuletyn Instytutu Hodowli i Aklimatyzacji Roślin, no. 226/227 (June 30, 2003): 31–40. https://doi.org/10.37317/biul-2003-0125.

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Celem pracy jest przedstawienie zastosowania i walorów sekwencyjnej analizy plonu na przykładzie oceny uwarunkowania zmienności plonu owoców porzeczki czarnej na roślinie przez jego cechy plonotwórcze takie, jak (w kolejności ich kształtowania się w ontogenezie) średnia liczba pędów 1-rocznych, średnia długość przyrostów 1-rocznych, termin kwitnienia, uszkodzenie kwiatów przez przymrozki wiosenne oraz średnia masa 100 owoców. Stwierdzono, że sekwencyjna analiza plonu jest wartą polecenia, lepszą metodą, niż analiza liniowej regresji wielokrotnej oraz analiza ścieżek, w badaniach uwarunkowania

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23

Nanthakumar, N. N., and S. J. Henning. "Distinguishing normal and glucocorticoid-induced maturation of intestine using bromodeoxyuridine." American Journal of Physiology-Gastrointestinal and Liver Physiology 268, no. 1 (1995): G139—G145. http://dx.doi.org/10.1152/ajpgi.1995.268.1.g139.

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Exogenous glucocorticoids administered during the first two postnatal weeks are capable of eliciting precocious maturation of the rat intestine. However, it is not known whether this represents an alternative developmental pathway or is essentially an advancement of normal ontogeny. The goal of the present study was to address this question using the thymidine analogue 5-bromo-2'-deoxyuridine (BrdU), which is known to selectively inhibit differentiation in a number of tissues. Intestinal development was assessed by following changes in sucrase, trehalase, glucoamylase, and lactase activities.

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Brown, Caleb, Robert Holmes, and Phillip Currie. "A subadult individual of Styracosaurus albertensis (Ornithischia: Ceratopsidae) with comments on ontogeny and intraspecific variation in Styracosaurus and Centrosaurus." Vertebrate Anatomy Morphology Palaeontology 8 (May 11, 2020): 67–95. http://dx.doi.org/10.18435/vamp29361.

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Styracosaurus albertensis is an iconic centrosaurine horned dinosaur from the Campanian of Alberta, Canada, known for its large spike-like parietal processes. Although described over 100 years ago, subsequent discoveries were rare the last few decades, during which time several new skulls, skeletons, and bonebeds were found. Here we described an immature individual, the smallest known for the species, represented by a complete skull and fragmentary skeleton. Although ~80% maximum size, it possesses a suite of characters associated with immaturity, and is regarded as a subadult. The ornamentati

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Mamadiyorova, Mashhura Mashrabovna, Muxlisa Olimjon qizi Otamurodova, and Muxlisa Farmon qizi Xamrayeva. "AYOLLARDA GISTREKTAMIYAGA OLIB KELUVCHI OMILLAR." GOLDEN BRAIN 1, no. 10 (2023): 457–61. https://doi.org/10.5281/zenodo.7833647.

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<em>Maqolaning mazmuni ayollarda kuzatiladigan gistrektomiya hodisasi va bunga olib keluvchi omillarni kengroq yoritishdan iborat.  Gistrektomiya aslida nima - bu ayolda bachadon miomasi, endometrioz, anomal qon ketishi va saraton kasalliklari sababli bachadonni va bachadon b</em><em>o‘</em><em>ynini olib tashlashga olib keladigan jarrohlik amaliyoti hisoblanadi. Ayollarda gistrektomiyaga olib keluvchi yetakchi omillar orasida bachadon miomasi q</em><em>o‘</em><em>shimcha ravishda liomioma yoki mioma deb ham ataluvchi bachadon </em><em>o‘</em><em>smasi yetakchi </em><em>

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Chevrinais, Marion, Jean-Yves Sire, and Richard Cloutier. "Unravelling the ontogeny of a Devonian early gnathostome, the “acanthodian” Triazeugacanthus affinis (eastern Canada)." PeerJ 5 (October 27, 2017): e3969. http://dx.doi.org/10.7717/peerj.3969.

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The study of vertebrate ontogenies has the potential to inform us of shared developmental patterns and processes among organisms. However, fossilised ontogenies of early vertebrates are extremely rare during the Palaeozoic Era. A growth series of the Late Devonian “acanthodian” Triazeugacanthus affinis, from the Miguasha Fossil-Fish Lagerstätte, is identified as one of the best known early vertebrate fossilised ontogenies given the exceptional preservation, the large size range, and the abundance of specimens. Morphological, morphometric, histological and chemical data are gathered on a growth

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Hayes, Daniel B., and William W. Taylor. "Reproductive Strategy in Yellow Perch (Perca flavescens): Effects of Diet Ontogeny, Mortality, and Survival Costs." Canadian Journal of Fisheries and Aquatic Sciences 47, no. 5 (1990): 921–27. http://dx.doi.org/10.1139/f90-106.

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Factors influencing the theoretical optimal age at first reproduction for yellow perch (Perca flavescens) were explored for three different ontogenies including: zooplankton only; zooplankton and benthos; zooplankton, benthos, and fish. Under each of these diets, optimal age at first reproduction decreased as the decrease in mortality caused by reproduction increased. When adult yellow perch fed only on zooplankton, adult survival rate has little effect on optimal age at first reproduction. When fish and benthos are utilized, the optimal age at first reproduction varies strongly with adult sur

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Zelditch, Miriam Leah, H. David Sheets, and William L. Fink. "The ontogenetic dynamics of shape disparity." Paleobiology 29, no. 1 (2003): 139–56. http://dx.doi.org/10.1666/0094-8373(2003)029<0139:todosd>2.0.co;2.

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Disparity appears to decrease or remain stable over geological time in numerous groups. This pattern is sometimes explained in terms of developmental constraints, but labile developmental systems might produce the same pattern should novelties interact, counterbalancing their individual effects. We test the hypothesis that counterbalancing can reduce disparity by comparing ontogenies of shape among nine species of piranhas to identify the developmental novelties. All three parameters examined change multiple times, sometimes dramatically. By comparing levels of disparity between species at two

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Codron, Daryl, Chris Carbone, Dennis W. H. Müller, and Marcus Clauss. "Ontogenetic niche shifts in dinosaurs influenced size, diversity and extinction in terrestrial vertebrates." Biology Letters 8, no. 4 (2012): 620–23. http://dx.doi.org/10.1098/rsbl.2012.0240.

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Given the physiological limits to egg size, large-bodied non-avian dinosaurs experienced some of the most extreme shifts in size during postnatal ontogeny found in terrestrial vertebrate systems. In contrast, mammals—the other dominant vertebrate group since the Mesozoic—have less complex ontogenies. Here, we develop a model that quantifies the impact of size-specific interspecies competition on abundances of differently sized dinosaurs and mammals, taking into account the extended niche breadth realized during ontogeny among large oviparous species. Our model predicts low diversity at interme

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Webster, Mark. "Ontogeny, systematics, and evolution of the effaced Early Cambrian trilobites Peachella Walcott, 1910 and Eopeachella new genus (Olenelloidea)." Journal of Paleontology 83, no. 2 (2009): 197–218. http://dx.doi.org/10.1666/08-106.1.

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Although used in biostratigraphy and in studies of early Cambrian trilobite evolution, the olenelloid genus Peachella has received little research attention. The ontogenetic and evolutionary origins of its derived features—an effaced cephalon and grossly inflated genal spines—have remained mysterious. Based on examination of new and existing collections, P. iddingsi and P. brevispina are here described in detail, including aspects of their respective ontogenies and the first description of the thorax of P. iddingsi. A new monotypic genus, Eopeachella, is also described from recently collected

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Nadel, B., S. Tehranchi, and A. J. Feeney. "Coding end processing is similar throughout ontogeny." Journal of Immunology 154, no. 12 (1995): 6430–36. http://dx.doi.org/10.4049/jimmunol.154.12.6430.

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Abstract During the recombination process, extensive processing of the coding ends provides tremendous potential diversity to the joint of any two gene segments. However, the diversity of the newborn B and T cell repertoires is greatly reduced compared with that of the adult. At the mechanistic level, this difference is primarily due to the absence of terminal deoxynucleotidyltransferase expression until the first week after birth. Additionally, one direct consequence of the lack of N regions early in ontogeny is the more frequent occurrence of homology-directed recombination, reducing even fu

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Muhiddinov, Abdubanob, and Xilola Zokirjon qizi Tuychiyeva. "JISMONIY RIVOJLANISH SOG'LIQNI SALASH HOLATINI BAHOLASHDAGI O'RNI." GOLDEN BRAIN 1, no. 4 (2023): 83–87. https://doi.org/10.5281/zenodo.7639860.

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<em>Jismoniy rivojlanish tug‘ilish, kasallanish va o‘lim bilan birga aholi salomatligi darajasining ko‘rsatkichlaridan biridir. Jismoniy va jinsiy rivojlanish jarayonlari o‘zaro bog‘liq bo‘lib, o‘sish va rivojlanishning umumiy qonuniyatlarini aks ettiradi, ammo shu bilan birga ular ijtimoiy, iqtisodiy, sanitariya-gigiyena va boshqa sharoitlarga sezilarli darajada bog‘liq bo‘lib, ularning ta’siri asosan yoshi bilan belgilanadi.</em>

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Alimardonov, Zohid Shukurullayevich, and Doniyor Baxtiyor òģli Dadilov. "Shaxs rivojlanishining psixologik xususiyatlari." XXI ASRDA INNOVATSION TEXNOLOGIYALAR, FAN VA TA'LIM TARAQQIYOTIDAGI DOLZARB MUAMMOLAR 1, no. 4 (2023): 178–84. https://doi.org/10.5281/zenodo.7996068.

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Ushbu maqolada shaxsning rivojlanishi va rivojlanish, kamolot yetuklik kabi tushunchalarga ta’rif berilgan. Shuningdek, rivojlanish jarayonining psixologiya va pedagogika uchun zarur bo‘lgan xususiyatlari ajratib ko‘rsatilgan. Bolaning individual rivojlanishi va yosh xususiyatlariga bog’liq o’zgarishlari keltirilgan.

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Nurmatov, Norqobil Jo'rayevich, and Timur Juraqulovich Alibekov. "TOMCHILATIB SUG'ORISH TARTIBINING OQBOSH KARAM ILDIZ SISTEMASI VA YER USTKI QISMI KO'RSATKICHLARIGA TA'SIRI." AGROINNOVATSIYА 1, no. 1 (2023): 103–5. https://doi.org/10.5281/zenodo.10420339.

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Ushbu maqolada tomchilatib sug’orish tartibining oqbosh karam ildiz sistemasi va yer ustki qismi ko’rsatkichlariga ta’siri haqidagi ma’lumotlar keltirilgan. Oqbosh karamning Termiz-2500 navida yer ustki qismi va ildiz sistemasining o’sishi va rivojlanishi o’rtasida qat’iy bog’liqlik mavjud ekanligi hamda sug’orishni to’g’ri tashkil qilish ekinlar yer ustki qismi va ildiz sistemasining rivojlanishiga, natijada hosildorlikning yuqori bo’lishiga ijobiy ta’sir qilishi aniqlangan.

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Chatterton, Brian D. E., Gregory D. Edgecombe, Norberto E. Vaccari, and Beatriz G. Waisfeld. "Ontogenies of some Ordovician Telephinidae from Argentina, and larval patterns in the Proetida (Trilobita)." Journal of Paleontology 73, no. 2 (1999): 219–39. http://dx.doi.org/10.1017/s0022336000027736.

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The ontogenies of three new species of Telephinidae, Telephina calandria, Telephina chingolo, and Telephina problematica are described from Arenig-Caradoc strata in the Argentine Precordillera, and compared with the larval stages of some other Proetida, including other telephinids.New findings reveal 1) a radical metamorphosis in the ontogenies of these Telephina species late in the meraspid period, not previously described among Trilobita; and 2) distinctive hypostomes of Telephinidae containing long, thin anterolaterally and dorsally splayed anterior wings. Early ontogenies of different spec

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Popov, V. A., M. A. Rassomakhin, and S. V. Kolisnichenko. "Polyakov log coarse garnet occurrence in the South Urals." МИНЕРАЛОГИЯ (MINERALOGY) 9 (June 29, 2023): 60–66. http://dx.doi.org/10.35597/2313-545x-2023-9-2-5.

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Ontogenic modeling of the origin of coarse garnet of the Polyakov log occurrence (South Urals) in a fne-grained schist sequence allowed the authors to conclude on its metasomatic growth with the replacement of chlorite aggregates. Muscovite, ilmenite, epidote, quartz and apatite remain preserved in the primary schist orientation of individuals. Accessory andesine, cobaltite, pentlandite, pyrrhotite and zircon crystallized together with garnet. The formation of coarse garnet crystals is probably related to fuctuations of supersaturation relative to garnet in areas of schists with abundant chlor

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Démuthová, Slávka. "Vývin chápania smrti v ontogenéze." Sociální studia / Social Studies 8, no. 2 (2011): 87–106. http://dx.doi.org/10.5817/soc2011-2-87.

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Štúdia sa zameriava na doterajšie výsledky výskumov v oblasti vývinu chápania smrti u detí. Rekapituluje snahy započaté v 30. - 40. rokoch minulého storočia psychoanalyticky orientovanými psychológmi, popisuje základné zistenia výskumov v 60. – 70. rokoch ovplyvnených Piagetovou koncepciou kognitívneho vývinu a dopĺňa ich novšími prístupmi založenými na intuitívnom chápaní fungovania živých organizmov. Sumarizuje tieto zistenia a predstavuje všeobecne prijímané štádiá vývinu chápania smrti v ontogenéze jedinca, ktoré sú vytýčené uchopením kľúčových charakteristík smrti – univerzality, ireverzi

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Carretero, Miguel Angel, Rastko Ajtíc, Ljiljana Tomović, and Jelka Crnobrnja-Isailovíc. "Evidence for post-natal instability of head scalation in the meadow viper (Vipera ursinii) – patterns and taxonomic implications." Amphibia-Reptilia 29, no. 1 (2008): 61–70. http://dx.doi.org/10.1163/156853808783431424.

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Abstract In Squamates, head meristic characters are commonly used in analyses of intraspecific variability, systematics and phylogeny. Taxonomic significance of head scales is based on the assumption that discrete values of particular scales are set at birth and stable during individual ontogeny. In this paper, we analysed ontogenic changes of head scalation in a population of meadow viper (Vipera ursinii), based on multiple recaptures of marked individuals. Our results show that changes of cephalic scales occur both in immatures and in adults; the frequency of occurrence of change in the samp

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Khaitsev, Nikolai Valentinovich, Andrey Glebovich Vasiliev, and Aleksandr Petrovich Trashkov. "Individual and group peculiarities of adaptation in ontogeny (review and problem statement)." Pediatrician (St. Petersburg) 5, no. 2 (2014): 76–80. http://dx.doi.org/10.17816/ped5276-80.

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А complex of biochemical, hematologic and physiologic parameters determine individual variability that should correlate with general resistance of the organism. Hypoxia, a universal pathologic process is recommended as a model for studying individual adaptation in ontogeny. Hypophysis-adrenals system (HAS) activity may produce decisive effect upon the organism’s response reactions’ trend. HAS activity changes with age. Parallel to these changes resistance to hypoxia also alters. This process is gender-dependant. Individual and group peculiarities of resistance to acute hypoxia at various ontog

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Sat-Muñoz, Daniel, Luz-Ma Adriana Balderas-Peña, Eduardo Gómez-Sánchez, et al. "Onco-Ontogeny of Squamous Cell Cancer of the First Pharyngeal Arch Derivatives." International Journal of Molecular Sciences 25, no. 18 (2024): 9979. http://dx.doi.org/10.3390/ijms25189979.

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Head and neck squamous cell carcinoma (H&NSCC) is an anatomic, biological, and genetic complex disease. It involves more than 1000 genes implied in its oncogenesis; for this review, we limit our search and description to the genes implied in the onco-ontogeny of the derivates from the first pharyngeal arch during embryo development. They can be grouped as transcription factors and signaling molecules (that act as growth factors that bind to receptors). Finally, we propose the term embryo-oncogenesis to refer to the activation, reactivation, and use of the genes involved in the embryo’s dev

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Wagner, Jean, and Marie-Agnès Letrouit-Galinou. "Structure et ontogenèse du thalle squamuleux du lichen Endocarpon pusillum (Pyrénolichens, Verrucariacées)." Canadian Journal of Botany 66, no. 11 (1988): 2118–27. http://dx.doi.org/10.1139/b88-290.

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Observations concerning morphology, structure, and ontogeny of the thallus of a squamulous species, Endocarpon pusillum Hedw., are presented. The latter is composed of squamules, most of which are interconnected by a well developed network of rhizomorphs. Four types of squamules have been distinguished according to their morphological characters and their location with regard to rhizomorphs. The squamules of E. pusillum are characterized by the lack of lacunae and the presence of numerous rhizomorphic-like hyphae in the medulla, which are in topographical relation with the hyphae of the rhizom

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Tucker, Shirley C. "The role of floral development in studies of legume evolution." Canadian Journal of Botany 70, no. 4 (1992): 692–700. http://dx.doi.org/10.1139/b92-089.

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Comparative floral development is useful to test hypotheses of phylogeny and taxonomic relationships among legumes because it provides a greater understanding of character states. It can reveal homologies, as in the cupule, an anomalous and varied structure among species of Psoralea that originates by fusion of two or more small bracts. Convergence is demonstrated by comparing differing developmental pathways of specialized floral features such as dorsiventral heterostameny, eccentric corolla, porate stamens, and enantiostyly, among species of Cassia, Senna, and Chamaecrista. Naturally occurri

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Wardani, Ambarsari Kusuma, Sufyani Prabawanto, and Al Jupri. "How Students' Obstacle in Solving Ratio and Proportion Problem? Focusing on Mathematical Literacy Process." Mosharafa: Jurnal Pendidikan Matematika 13, no. 2 (2024): 415–30. https://doi.org/10.31980/mosharafa.v13i2.1933.

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Penting bagi siswa untuk menguasai literasi matematis yang mencakup kemampuan merumuskan, menerapkan, dan menafsirkan dalam menyelesaikan masalah. Namun, siswa masih menghadapi kesulitan dalam proses literasi matematis, khususnya pada materi rasio dan proporsi, yang dapat dikategorikan sebagai hambatan belajar atau learning obstacles. Penelitian ini bertujuan untuk mengidentifikasi hambatan belajar siswa dari tiga aspek, yaitu epistemologis, didaktis, dan ontogenik dalam konteks literasi matematis pada materi rasio dan proporsi. Penelitian ini menggunakan pendekatan kualitatif dengan metode fe

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Renosi, Florian, Anne Roggy, Ambre Giguelay, et al. "Transcriptomic and genomic heterogeneity in blastic plasmacytoid dendritic cell neoplasms: from ontogeny to oncogenesis." Blood Advances 5, no. 5 (2021): 1540–51. http://dx.doi.org/10.1182/bloodadvances.2020003359.

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Abstract Oncogenesis and ontogeny of blastic plasmacytoid dendritic cell neoplasm (BPDCN) remain uncertain, between canonical plasmacytoid dendritic cells (pDCs) and AXL+ SIGLEC6+ DCs (AS-DCs). We compared 12 BPDCN to 164 acute leukemia by Affymetrix HG-U133 Plus 2.0 arrays: BPDCN were closer to B-cell acute lymphoblastic leukemia (ALL), with enrichment in pDC, B-cell signatures, vesicular transport, deubiquitination pathways, and AS-DC signatures, but only in some cases. Importantly, 1 T-cell ALL clustered with BPDCN, with compatible morphology, immunophenotype (cCD3+ sCD3− CD123+ cTCL1+ CD30

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45

Heuret, P., D. Barthélémy, E. Nicolini, and C. Atger. "Analyse des composantes de la croissance en hauteur et de la formation du tronc chez le chêne sessile, Quercus petraea (Matt.) Liebl. (Fagaceae) en sylviculture dynamique." Canadian Journal of Botany 78, no. 3 (2000): 361–73. http://dx.doi.org/10.1139/b00-012.

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Simultaneous observation of morphological and anatomical markers allowed us to reconstitute the growth pattern of the main axis in two populations of sessile oak aged 15 and 29 years, respectively. The comparison of the morphological features of annual shoots and growth units according to either their ontogenic age or their year of formation allowed us to separate endogenous trends in the development of the tree and variations resulting from the effect of annual growth conditions. Three stages of tree development were identified. The first stage is characterized by the regular production of mo

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Boucot, A. J., and R. A. Wilson. "Origin and early radiation of terebratuloid brachiopods: thoughts provoked by Prorensselaeria and Nanothyris." Journal of Paleontology 68, no. 5 (1994): 1002–25. http://dx.doi.org/10.1017/s0022336000026615.

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The ontogenies of Prorensselaeria and Nanothyris, described here for the first time, suggest that Cloud's Dielasmatidae are closely affiliated phylogenetically with Cloud's Centronellidae. This is based on the fact that the type species of Nanothyris goes through an initial mutationellinid (Cloud's Dielasmatidae) growth stage before reaching its adult rensselaerinid (Centronellidae) growth stage. The ontogeny of Prorensselaeria requires that it be transferred from the Globithyrinae (Rhipidothyrididae) to the Mutationellinae (Meganteridae [=Cloud's Dielasmatidae = Stehli's Mutationellidae]). Fu

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Kemp, PD, and GJ Blair. "Phosphorus efficiency in pasture species. VIII. Ontogeny, growth, P acquisition and P utilization of Italian ryegrass and phalaris under P deficient and P sufficient conditions." Australian Journal of Agricultural Research 45, no. 3 (1994): 669. http://dx.doi.org/10.1071/ar9940669.

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The P efficiency of Italian ryegrass (Lolium multiflorum Lamk. cv Grasslands Tama) and phalaris (Phalaris aquatica L. cv Sirosa) was compared on both a temporal and ontogenetic basis. As ontogeny and growth are interrelated, such a comparison allowed the growth and physiological responses to P level of the two species to be separated from responses due to the species being at different ontogenetic stages at the time of comparison. Plants were grown from seed through to anthesis under P deficient and P sufficient conditions in soil in a glasshouse. The ontogenies of Italian ryegrass and phalari

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Johnston, Mark R., R. Elena Tabachnick, and Fred L. Bookstein. "Landmark-based morphometrics of spiral accretionary growth." Paleobiology 17, no. 1 (1991): 19–36. http://dx.doi.org/10.1017/s0094837300010320.

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Many organisms continue to grow their skeletons throughout ontogeny. In the shells of molluscs, protists, and brachiopods and in bovid horns, accretionary spiral growth provides a detailed and continuous growth history. Although a shell may be described as a single static form, the overall morphology is a summation of the ongoing accretionary process. For this reason, an explicitly ontogenetic characterization of form provides insight into the final form achieved. Analysis of landmark transformations offers direct access to major components of morphological variation, both among adult individu

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Forhead, A. J., L. Thomas, J. Crabtree, et al. "Plasma Leptin Concentration in Fetal Sheep during Late Gestation: Ontogeny and Effect of Glucocorticoids." Endocrinology 143, no. 4 (2002): 1166–73. http://dx.doi.org/10.1210/endo.143.4.8762.

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Abstract The ontogeny and developmental control of plasma leptin concentration in the fetus are poorly understood. The present study investigated plasma leptin concentration in chronically catheterized sheep fetuses near term, and in neonatal and adult sheep. The effect of glucocorticoids on plasma leptin in utero was examined by fetal adrenalectomy and exogenous cortisol or dexamethasone infusion. In intact, untreated fetuses studied between 130 and 140 d (term, 145 ± 2 d), plasma leptin concentration increased in association with the prepartum cortisol surge. Positive relationships were obse

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Jabbour, Florian, Felipe Espinosa, Quentin Dejonghe, and Timothée Le Péchon. "Development and Evolution of Unisexual Flowers: A Review." Plants 11, no. 2 (2022): 155. http://dx.doi.org/10.3390/plants11020155.

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The development of unisexual flowers has been described in a large number of taxa, sampling the diversity of floral phenotypes and sexual systems observed in extant angiosperms, in studies focusing on floral ontogeny, on the evo-devo of unisexuality, or on the genetic and chromosomal bases of unisexuality. We review here such developmental studies, aiming at characterizing the diversity of ontogenic pathways leading to functionally unisexual flowers. In addition, we present for the first time and in a two-dimensional morphospace a quantitative description of the developmental rate of the sexua

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