Toplam 129 içerik listeleniyor
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Zika Virüs RNA 'sının Varlığı ve Kalıcılığı
Barry Atkinson, Fiona Thorburn, Christina Petridou, Daniel Bailey, Roger Hewson, Andrew J.H. Simpson, Timothy J.G. Brooks, Emma J. Aarons yapmış oldukları araştırmaya göre:
https://www.biyologlar.com/zika-virus-rna-sinin-varligi-ve-kaliciligi -
Zika Virüs RNA 'sının Varlığı ve Kalıcılığı
Barry Atkinson, Fiona Thorburn, Christina Petridou, Daniel Bailey, Roger Hewson, Andrew J.H. Simpson, Timothy J.G. Brooks, Emma J. Aarons yapmış oldukları araştırmaya göre:
https://www.biyologlar.com/zika-virus-rna-sinin-varligi-ve-kaliciligi -
KÖK HÜCRELERE BAKIŞ:TANIMLAR, KAVRAMLAR ve SINIFLANDIRMALAR
İki binli yıllarla beraber kök hücrelerin rejeneratif tıp (yenileyici tıp) alanındaki öneminin giderek arttığını ve tıbbın geleceğini şekillendirme potansiyelini gözlemlemekteyiz.
https://www.biyologlar.com/kok-hucrelere-bakistanimlar-kavramlar-ve-siniflandirmalar -
Improving the delivery of chemotherapy with graphene
A new study published in IOP Publishing's journal 2D Materials has proposed using graphene as an alternative coating for catheters to improve the delivery of chemotherapy drugs. The research suggests that placing graphene - an extremely thin sheet of carbon atoms - on the internal surfaces of intravenous catheters commonly used to deliver chemotherapy drugs into a patient's body will improve the efficacy of treatments, and reduce the potential of the catheters breaking. The study indicates...
https://www.biyologlar.com/improving-the-delivery-of-chemotherapy-with-graphene -
Psychodidae
Güve sinekleri olarak da bilinen Psychodidae türleri Palearktik bölgede Phlebotominae, Bruchomyiinae, Trichomyiinae, Sycoracinae, Horaiellinae ve Psychodinae olmak üzere 6 altfamilyaya dahildir. En fazla 5 cm boyunda olabilen küçük sineklerdir. Vücut ve kanatları çeşitli renklerde olan oldukça kalın ve uzun kıllarla örtülüdür. Kanatlarda sadece boyuna damarlar bulunur, enine damarlar bulunmaz. Erginlerin ağız parçaları fonksiyonel değildir. Antenler 14-16 segmentli,...
https://www.biyologlar.com/psychodidae -
Tatlı Su Protozoonları ve Önemi
Protozoa tek hücreli, ökaryotik mikroorganizmalardır. Özellikle bakteri, tek hücreli alg ve diğer protistler üzerinden beslenirler. 80.000’in üzerinde protozoon türü tanımlanmıştır. Bunların yarıdan fazlası fosil, yaklaşık 10.000 kadarı da simbiyonttur [1]. Protozoon türleri uzun yıllar sadece insanlara verdikleri zarar düşünülerek, parazitolojik açıdan ele alınmış, serbest yaşayan protozoonlar ihmal edilmiştir. Gerçekte çok sayıda parazit protozoon...
https://www.biyologlar.com/tatli-su-protozoonlari-ve-onemi -
Cecropia Güve Yaşam Döngüsü
Cecropia Güve Yaşam Döngüsü Meditate and wonder; Experience the marvel of a complete metamorphosis while listening to sumptuous music of Debussy and Holst. Witness events common to nature but rarely seen. Cecropia moth lifecycle metamorphosis is chronicled in detail. See a caterpillar eat its way out of the egg. Look as a larva changes from black; then yellow; to showing patterns and hues of orange, black, yellow, blue and green. Watch the caterpillar work out of its old 4rth instar...
https://www.biyologlar.com/cecropia-guve-yasam-dongusu -
E. coli Besiyerleri
Geliştirme koşullarından bağımsız olarak yeterli bir aktivite gösteren karakteristik yapısal enzimlerin belirlenmesi bakterilerde hızlı bir identifikasyon sağlamaktadır. E. coli, bir kaç Salmonella ve Shigella suşu dışında ß-D-glucuronidase (MUGase) enzimine sahip Enterobacteriaceae üyesi olan tek türdür. Bu enzim, 4-methylumbelliferyl-ß-D-glucuronide (MUG)'i uzun dalga boylu UV ışığı altında fluoresans veren 4-methylumbelliferon 'a parçalar. E. coli...
https://www.biyologlar.com/e-coli-besiyerleri -
National Geographic Live! - People, Plants and Pollinators
Emerging Explorer Dino Martins says that from long-tongued bees to hawk moths, pollinators are the hidden workers that keep the planet running.
https://www.biyologlar.com/national-geographic-live-people-plants-and-pollinators -
Scientists discover an on-off switch for aging cells
Scientists at the Salk Institute have discovered an on-and-off "switch" in cells that may hold the key to healthy aging. This switch points to a way to encourage healthy cells to keep dividing and generating, for example, new lung or liver tissue, even in old age. In our bodies, newly divided cells constantly replenish lungs, skin, liver and other organs. However, most human cells cannot divide indefinitely–with each division, a cellular timekeeper at the ends of chromosomes shortens. When...
https://www.biyologlar.com/scientists-discover-an-on-off-switch-for-aging-cells -
E. coli Besiyerleri
Geliştirme koşullarından bağımsız olarak yeterli bir aktivite gösteren karakteristik yapısal enzimlerin belirlenmesi bakterilerde hızlı bir identifikasyon sağlamaktadır. E. coli, bir kaç Salmonella ve Shigella suşu dışında ß-D-glucuronidase (MUGase) enzimine sahip Enterobacteriaceae üyesi olan tek türdür. Bu enzim, 4-methylumbelliferyl-ß-D-glucuronide (MUG)'i uzun dalga boylu UV ışığı altında fluoresans veren 4-methylumbelliferon 'a parçalar. E. coli...
https://www.biyologlar.com/e-coli-besiyerleri-1 -
How an RNA gene silences a whole chromosome
Researchers at Caltech have discovered how an abundant class of RNA genes, called long non-coding RNAs (lncRNAs, pronounced link RNAs) can regulate key genes. By studying an important lncRNA, called Xist, the scientists identified how this RNA gathers a group of proteins and ultimately prevents women from having an extra functional X-chromosome--a condition in female embryos that leads to death in early development. These findings mark the first time that researchers have uncovered the detailed...
https://www.biyologlar.com/how-an-rna-gene-silences-a-whole-chromosome -
Proteomics identifies DNA repair toolbox
During each cell division, more than 3.3 billion base pairs of genomic DNA have to be duplicated and segregated accurately to daughter cells. But what happens when the DNA template is damaged in such a way that the replication machinery gets stuck?
https://www.biyologlar.com/proteomics-identifies-dna-repair-toolbox -
Oncogene controls stem cells in early embryonic development
After a gestation period of around ten months, fawns are born in early summer - when the weather is warm and food is plentiful for the mother. Six months would actually be enough for the embryo's development, but then offspring from mating in the later portion of summer would be born in winter. Therefore, nature prolongs the gestation period by a hormone-regulated pause in the development of the early embryos. Many animal species use this process, called diapause, to adjust their reproduction...
https://www.biyologlar.com/oncogene-controls-stem-cells-in-early-embryonic-development -
Perfecting a viral pack mule
Viruses aren't always bad. In fact, scientists can harness the capabilities of some viruses for good--modifying the viruses to carry drug molecules, for example. One useful virus has been cowpea mosaic virus (CPMV), a plant pathogen that can be modified to aid in tumor detection and even chemotherapy. In a new study, published online ahead of print in the journal Structure, researchers at The Scripps Research Institute (TSRI) report that, based on its structure, a hollowed-out version of CPMV...
https://www.biyologlar.com/perfecting-a-viral-pack-mule -
Stem cell therapy improves outcomes in severe heart failure
A new stem cell therapy significantly improved long-term health outcomes in patients with severe and end-stage heart failure in a study presented at the American College of Cardiology's 65th Annual Scientific Session.
https://www.biyologlar.com/stem-cell-therapy-improves-outcomes-in-severe-heart-failure -
Programlı hücre ölümü
Sorunuzun Cevabı burada var. www.biyologlar.com/index.php?option=com_...atid=25&id=1881#2266 Animasyon: Apoptosis: Overview www.promega.com/paguide/animation/selector.htm?coreName=apop01 Apoptosis: Intrinsic Triggers www.promega.com/paguide/animation/selector.htm?coreName=apop02 Apoptozis hakkında bilgiler Programlanmış hücre ölümü Programlanmış hücre ölümü (PHÖ veya PCD), herhangi bir hücrenin, hücre içi bir programla ölmesinin planlaması ve...
https://www.biyologlar.com/programli-hucre-olumu -
Venezüella Kaniş Güvesi
Fotoğrafta gördüğünüz 2009 yılında Venezüellanın Gran Sabana bölgesinde, Dr. Arthur Anker tarafından keşfedilmiş yeni bir güve türüdür.
https://www.biyologlar.com/venezuella-kanis-guvesi -
Türkiye Zootekni Bölümlerinde Hayvan Davranışları Bilimi
Hayvan davranışları bilimi bakımından Türkiye’de son yıllarda sevindirici gelişmeler yaşanmaktadır. Lisans ve lisansüstü ders olarak hayvan davranışları, zootekni bölümü olan neredeyse tüm üniversitelerde okutulmaya başlanmıştır. Genellikle lisansta zorunlu ders olarak genel hayvan davranışları verilmekte, lisansüstünde ise seçmeli ders olarak türlere özgü davranış dersleri yer almaktadır. Ülkemizde davranış derslerinin türlere özgünleşmesi...
https://www.biyologlar.com/turkiye-zootekni-bolumlerinde-hayvan-davranislari-bilimi -
Lowly 'new girl' chimps form stronger female bonds
Low-ranking "new girl" chimpanzees seek out other gal pals with similar status, finds a new study of social relationships in the wild apes. The study is available online and is scheduled to appear in the July 2015 issue of the journal Animal Behaviour. Unlike most primates, female chimps are loners compared to males. "They spend about half their time alone or with dependent kids," said Duke University research scientist Steffen Foerster, who co-authored the study. "Chimpanzee females' more...
https://www.biyologlar.com/lowly-new-girl-chimps-form-stronger-female-bonds -
Missing link found between brain, immune system -- with major disease implications
Vessels directly connecting brain, lymphatic system exist despite decades of doctrine that they don't Finding may have substantial implications for major neurological diseases Game-changing discovery opens new areas of research, transforms existing ones Major gap in understanding of the human body revealed 'They'll have to change the textbooks' CHARLOTTESVILLE, Va., June 1, 2015 - In a stunning discovery that overturns decades of textbook teaching, researchers at the University of...
https://www.biyologlar.com/missing-link-found-between-brain-immune-system-with-major-disease-implications -
Legions of nanorobots target cancerous tumors with precision
The legions of nanorobotic agents are actually composed of more than 100 million flagellated bacteria
https://www.biyologlar.com/legions-of-nanorobots-target-cancerous-tumors-with-precision -
Legions of nanorobots target cancerous tumors with precision
The legions of nanorobotic agents are actually composed of more than 100 million flagellated bacteria
https://www.biyologlar.com/legions-of-nanorobots-target-cancerous-tumors-with-precision -
Researchers discover how petunias know when to smell good
Good timing is a matter of skill. You would certainly dress up for an afternoon business meeting, but not an evening session of binge-watching Netflix. If you were just a few hours off in your wardrobe timing, your spouse might wonder why you slipped into a stiff business suit to watch "House of Cards." While humans are alone in their struggle to balance work and Netflix, all creatures wrestle with proper timing. With limited resources, organisms are pressed to use time wisely in all aspects...
https://www.biyologlar.com/researchers-discover-how-petunias-know-when-to-smell-good -
DNA research offers clues on cell mutation
A team of researchers from Colorado State University has been studying DNA damage in living cells to learn more about how genetic abnormalities arise. It has long been known that DNA molecules in every cell get constantly damaged by things from the outside environment, like sunlight, cigarette smoke and radiation. However, more recently researchers have discovered that sources from within the cell itself can sometimes be even more damaging. DNA, or deoxyribonucleic acid, is found in the...
https://www.biyologlar.com/dna-research-offers-clues-on-cell-mutation -
DNA research offers clues on cell mutation
A team of researchers from Colorado State University has been studying DNA damage in living cells to learn more about how genetic abnormalities arise. It has long been known that DNA molecules in every cell get constantly damaged by things from the outside environment, like sunlight, cigarette smoke and radiation. However, more recently researchers have discovered that sources from within the cell itself can sometimes be even more damaging. DNA, or deoxyribonucleic acid, is found in the...
https://www.biyologlar.com/dna-research-offers-clues-on-cell-mutation -
First imagery from echolocation reveals new signals for hunting bats
The ability of some bats to spot motionless prey in the dark has baffled experts until now. By creating the first visual images from echolocation, researchers reveal we have been missing how bats sense their world. Publishing in the journal eLife, scientists from Queen Mary University of London (QMUL) and the University of Bristol suggest that instead of searching for prey directly, bats intimately learn the layout of a home range - down to the surface of individual leaves and stones. When one...
https://www.biyologlar.com/first-imagery-from-echolocation-reveals-new-signals-for-hunting-bats -
Scientists discover protein's starring role in genome stability, and possibly cancer prevention
If you have a soft spot for unsung heroes, you'll love a DNA repair protein called XPG. Scientists from the U.S. Department of Energy's Lawrence Berkeley National Laboratory (Berkeley Lab) discovered that XPG plays a previously unknown and critical role helping to maintain genome stability in human cells. Their findings also raise the possibility that the protein helps prevent breast, ovarian, and other cancers associated with defective BRCA genes. The research, which is published online Jan....
https://www.biyologlar.com/scientists-discover-proteins-starring-role-in-genome-stability-and-possibly-cancer-prevention -
New DNA research reveals genetic heritage of elusive vaquita
A new method of teasing information from scarce and highly degraded genetic samples is helping NOAA Fisheries and Mexican scientists unravel the genetic heritage of the enigmatic vaquita, the most endangered marine mammal on Earth. Genetic studies are important to the international effort to conserve the vaquita because the DNA that holds their genetic code can unlock the secrets of how they came to be. For instance, it can reveal the story of how - and how long ago - the animals evolved into...
https://www.biyologlar.com/new-dna-research-reveals-genetic-heritage-of-elusive-vaquita -
New DNA research reveals genetic heritage of elusive vaquita
A new method of teasing information from scarce and highly degraded genetic samples is helping NOAA Fisheries and Mexican scientists unravel the genetic heritage of the enigmatic vaquita, the most endangered marine mammal on Earth. Genetic studies are important to the international effort to conserve the vaquita because the DNA that holds their genetic code can unlock the secrets of how they came to be. For instance, it can reveal the story of how - and how long ago - the animals evolved into...
https://www.biyologlar.com/new-dna-research-reveals-genetic-heritage-of-elusive-vaquita -
Newly discovered fossil sea urchin is the oldest of its kind
Researchers have uncovered a fossil sea urchin that pushes back a fork in its family tree by 10 million years, according to a new study.
https://www.biyologlar.com/newly-discovered-fossil-sea-urchin-is-the-oldest-of-its-kind -
Bu Canlılar Hala Yaşıyormu
Bilim dünyasındaki gelişmelerler birlikte, dünyada çok eski dönemlerdeki hayatlara ilişkin de değişik ve önemli ipuçları el ediliyor. Ancak bazen öyle bulgularla karşılaşılıyor ki, insanın "gerçekten dünyada yaşadı mı?" diye sorgulamasına yol açıyor. İşte herkesi düşündüren bulgular Chupacabra Birçok insan, resimde görünen hayvan kafasının ‘chupacabra' isimli bir hayvana ait olduğuna inanıyor. Pek mümkün görünmeyen Meksikalı canavarın tarifleri...
https://www.biyologlar.com/bu-canlilar-hala-yasiyormu -
Sociable chimps harbor richer gut microbiomes
Spending time in close contact with others often means risking catching germs and getting sick. But being sociable may also help transmit beneficial microbes, finds a multi-institutional study of gut microbiomes in chimpanzees.
https://www.biyologlar.com/sociable-chimps-harbor-richer-gut-microbiomes -
MİKROBİYAL LİÇİNG
Mikroorganizmalar mineral kaynaklarının oluşması ve çözülmesinde önemli rol oynar. Mineral aranması ve zenginleştirilmesinde biyoteknolojik yöntemlerin kullanılması popüler hale gelmiştir. Mikrobiyal liçing; mikroorganizmalar yaratımıyla maden cevherlerinden metallerin kazanılması işlemidir. Düşük kaliteli cevherlerden metallerin geri kazanımın da kullanılan kimyasal metodlar ekonomik olmamaktadır. Dünya genelinde yüksek oranlarda bulunan düşük kaliteli, bakır...
https://www.biyologlar.com/mikrobiyal-licing -
Fetal mice with Zika infection get microcephaly
Mouse fetuses injected with the Asian Zika virus strain and carried to term within their pregnant mothers display the characteristic features of microcephaly, researchers in China report May 11 in Cell Stem Cell. As expected, the virus infected the neural progenitor cells, and infected brains reveal expression of genes related to viral entry, altered immune response, and cell death. The authors say this is direct evidence that Zika infection causes microcephaly in a mammalian animal...
https://www.biyologlar.com/fetal-mice-with-zika-infection-get-microcephaly -
Fetal mice with Zika infection get microcephaly
Mouse fetuses injected with the Asian Zika virus strain and carried to term within their pregnant mothers display the characteristic features of microcephaly, researchers in China report May 11 in Cell Stem Cell. As expected, the virus infected the neural progenitor cells, and infected brains reveal expression of genes related to viral entry, altered immune response, and cell death. The authors say this is direct evidence that Zika infection causes microcephaly in a mammalian animal...
https://www.biyologlar.com/fetal-mice-with-zika-infection-get-microcephaly -
Mouse models show how Zika infects a fetus during pregnancy
Researchers at Washington University in St. Louis (WashU) have established the first models of Zika virus transmission from a pregnant mouse to her fetus.
https://www.biyologlar.com/mouse-models-show-how-zika-infects-a-fetus-during-pregnancy -
Mouse models show how Zika infects a fetus during pregnancy
Researchers at Washington University in St. Louis (WashU) have established the first models of Zika virus transmission from a pregnant mouse to her fetus.
https://www.biyologlar.com/mouse-models-show-how-zika-infects-a-fetus-during-pregnancy -
A molecular alarm clock awakens resting ovules
Ovarian follicle of fruit fly, with chromosomes stained in green and dKDM5 protein stained in red.
https://www.biyologlar.com/a-molecular-alarm-clock-awakens-resting-ovules -
A molecular alarm clock awakens resting ovules
Ovarian follicle of fruit fly, with chromosomes stained in green and dKDM5 protein stained in red.
https://www.biyologlar.com/a-molecular-alarm-clock-awakens-resting-ovules -
Genetic regulation of the thymus function identified
A single thymic epithelial cell (red) in contact with developing T cells (white).
https://www.biyologlar.com/genetic-regulation-of-the-thymus-function-identified -
Genetic regulation of the thymus function identified
A single thymic epithelial cell (red) in contact with developing T cells (white).
https://www.biyologlar.com/genetic-regulation-of-the-thymus-function-identified -
The Institut Pasteur in French Guiana publishes the first complete genome sequence of the Zika virus
Having confirmed the first cases of infection in Suriname then in French Guiana, the Institut Pasteur in French Guiana has sequenced the complete genome of the
https://www.biyologlar.com/the-institut-pasteur-in-french-guiana-publishes-the-first-complete-genome-sequence-of-the-zika-virus -
'Jumping gene' took peppered moths to the dark side
A mating pair of melanic peppered moths
https://www.biyologlar.com/jumping-gene-took-peppered-moths-to-the-dark-side -
'Jumping gene' took peppered moths to the dark side
A mating pair of melanic peppered moths
https://www.biyologlar.com/jumping-gene-took-peppered-moths-to-the-dark-side -
Researchers map Zika's routes to the developing fetus
Zika virus infects numerous primary cell types and explants of the human placenta, suggesting placental and paraplacental routes of virus transmission.
https://www.biyologlar.com/researchers-map-zikas-routes-to-the-developing-fetus -
Researchers map Zika's routes to the developing fetus
Zika virus infects numerous primary cell types and explants of the human placenta, suggesting placental and paraplacental routes of virus transmission.
https://www.biyologlar.com/researchers-map-zikas-routes-to-the-developing-fetus -
Sequencing of barley genome achieves new milestone
Barley is one of the world's most important cereal crops.
https://www.biyologlar.com/sequencing-of-barley-genome-achieves-new-milestone -
Sequencing of barley genome achieves new milestone
Barley is one of the world's most important cereal crops.
https://www.biyologlar.com/sequencing-of-barley-genome-achieves-new-milestone