ISLAMIC EDUCATION INTITUTIONS IN THE CLASSICAL PERIOD (UMAYYAD AND ABBASID PERIODS)

Islamic education has existed since the Prophet Muhammad SAW and continues to develop until now. Islam once reached the peak of glory, called the golden age, because, at that time, Islamic education was very developed and produced an extraordinary scientific civilization recognized throughout the world with evidence of the development of various Islamic educational institutions during the Classical period. Therefore, it is essential to know the history of Islamic education, especially during the classical era of the Umayyads and Abbasids, to learn from this history. The aim of this research is the institution of Islamic education during the Classical period of the Umayyads and Abbasids. The research method uses library research by collecting various sources of books, articles, and documents about Islamic educational institutions during the Umayyad and Abbasid eras. The results of the study show that Islamic Educational Institutions began to develop during the Umayyad period, such as the Kuttab, Khan, and other Madrasas, then reached their peak during the Abbasid era, such as the Kuttab, Library, and Observatory, elementary, middle to high-level Madrasas. However, not long after that, the Abbasids were destroyed, and Islamic education began to decline. Therefore, it is essential not to be lulled by progress glory days and to continue to love science so that Islamic education can develop as before

A haplotype-resolved chromosome-scale genome for Quercus rubra L. provides insights into the genetics of adaptive traits for red oak species

Northern red oak (Quercus rubra L.) is an ecologically and economically important forest tree native to North America. We present a chromosome-scale genome of Q. rubra generated by the combination of PacBio sequences and chromatin conformation capture (Hi-C) scaffolding. This is the first reference genome from the red oak clade (section Lobatae). The Q. rubra assembly spans 739 Mb with 95.27% of the genome in 12 chromosomes and 33,333 protein-coding genes. Comparisons to the genomes of Quercus lobata and Quercus mongolica revealed high collinearity, with intrachromosomal structural variants present. Orthologous gene family analysis with other tree species revealed that gene families associated with defense response were expanding and contracting simultaneously across the Q. rubra genome. Quercus rubra had the most CC-NBS-LRR and TIR-NBS-LRR resistance genes out of the 9 species analyzed. Terpene synthase gene family comparisons further reveal tandem gene duplications in TPS-b subfamily, similar to Quercus robur. Phylogenetic analysis also identified 4 subfamilies of the IGT/LAZY gene family in Q. rubra important for plant structure. Single major QTL regions were identified for vegetative bud break and marcescence, which contain candidate genes for further research, including a putative ortholog of the circadian clock constituent cryptochrome (CRY2) and 8 tandemly duplicated genes for serine protease inhibitors, respectively. Genome–environment associations across natural populations identified candidate abiotic stress tolerance genes and predicted performance in a common garden. This high-quality red oak genome represents an essential resource to the oak genomic community, which will expedite comparative genomics and biological studies in Quercus species

Predasjon i norsk næringsliv : utfordringer ved kostnadsestimering.

Denne utredningen tar for seg utfordringer som oppstår ved beregning av kostnader i forbindelse med mistanke om utnyttelse av dominerende stilling i form av rovprising. Til dette formålet har jeg sett på hvilke regler som ligger til grunn for regulering av dominante aktører og jeg har sett på hovedelement fra kostnadsregnskapet som er nødvendig for utføre teste den norske lovgivningen krever i dag. Utfordringen som ligger i kostnadstestene har jeg belysts ved å se på kostnadsestimering i luftfarten

Evolution of Genome Size and Complexity in Pinus

BACKGROUND: Genome evolution in the gymnosperm lineage of seed plants has given rise to many of the most complex and largest plant genomes, however the elements involved are poorly understood. METHODOLOGY/PRINCIPAL FINDINGS: Gymny is a previously undescribed retrotransposon family in Pinus that is related to Athila elements in Arabidopsis. Gymny elements are dispersed throughout the modern Pinus genome and occupy a physical space at least the size of the Arabidopsis thaliana genome. In contrast to previously described retroelements in Pinus, the Gymny family was amplified or introduced after the divergence of pine and spruce (Picea). If retrotransposon expansions are responsible for genome size differences within the Pinaceae, as they are in angiosperms, then they have yet to be identified. In contrast, molecular divergence of Gymny retrotransposons together with other families of retrotransposons can account for the large genome complexity of pines along with protein-coding genic DNA, as revealed by massively parallel DNA sequence analysis of Cot fractionated genomic DNA. CONCLUSIONS/SIGNIFICANCE: Most of the enormous genome complexity of pines can be explained by divergence of retrotransposons, however the elements responsible for genome size variation are yet to be identified. Genomic resources for Pinus including those reported here should assist in further defining whether and how the roles of retrotransposons differ in the evolution of angiosperm and gymnosperm genomes

A high‐quality reference genome for Fraxinus pennsylvanica for ash species restoration and research.

Green ash (Fraxinus pennsylvanica) is the most widely distributed ash tree in North America. Once common, it has experienced high mortality from the non‐native invasive emerald ash borer (EAB; Agrilus planipennis). A small percentage of native green ash trees that remain healthy in long‐infested areas, termed “lingering ash,” display partial resistance to the insect, indicating that breeding and propagating populations with higher resistance to EAB may be possible. To assist in ash breeding, ecology and evolution studies, we report the first chromosome‐level assembly from the genus Fraxinus for F. pennsylvanica with over 99% of bases anchored to 23 haploid chromosomes, spanning 757 Mb in total, composed of 49.43% repetitive DNA, and containing 35,470 high‐confidence gene models assigned to 22,976 Asterid orthogroups. We also present results of range‐wide genetic variation studies, the identification of candidate genes for important traits including potential EAB‐resistance genes, and an investigation of comparative genome organization among Asterids based on this reference genome platform. Residual duplicated regions within the genome probably resulting from a recent whole genome duplication event in Oleaceae were visualized in relation to wild olive (Olea europaea var. sylvestris). We used our F. pennsylvanica chromosome assembly to construct reference‐guided assemblies of 27 previously sequenced Fraxinus taxa, including F. excelsior. Thus, we present a significant step forward in genomic resources for research and protection of Fraxinus species

Ombrothermic index for aspen sampling sites, based on North American Regional Reanalysis (NARR) data from 1990–2010.

<p>NARR data are mapped on a 32-km resolution grid, so values assigned to each sampling site are for the grid cell intersected by the sample cluster centroid.</p

Rangewide cytotype proportions in <i>Populus tremuloides</i>.

<p>Current species range (green) <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0048406#pone.0048406-Little1" target="_blank">[59]</a> continental divide (dashes), and last glacial maximum (blue line) <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0048406#pone.0048406-Ehlers1" target="_blank">[58]</a> are shown. Insets show somatic metaphase chromosome spreads (diploid, 2<i>n</i> = 38; triploid, 3<i>n</i> = 57), red arrow indicates chromosome 1, the largest in the genome.</p