Search Results (19)

This purpose of this article is twofold. Firstly, I present an overview of the Egyptian concepts of the ba and ka, as well as the attestations of npš extant in the Iron Age Levant. This brief investigation is meant to illustrate the second point, which is the utility of Egyptian evidence for the study of Levantine culture and religion. In addition, this article may stand as a starting point for further investigation of the npš through Egyptian comparative evidence, going beyond iconographic, archaeological, and textual comparison to include comparison of concepts and ideologies. Full article

To elucidate the regional flavor characteristics of sun-dried green tea (SDT) and their underlying influencing factors, a comprehensive analysis was conducted using metabolomics and flavoromics approaches. This study systematically examined SDT samples and their corresponding tea garden soils from 13 distinct regions in Yunnan Province. The results revealed that the SDT samples could be classified into two distinct groups based on their flavor profiles. Compared to the regions of Pa Sha (PS), Bang Dong (BD), Dong Ban Shan (DBS), Dong Guo (DG), Su Hu (SH), Gua Feng Zhai (GFZ), and Wu Liang Shan (WLS), the regions of Xin Nong (XN), Ba Ka Nuan (BKN), Mang Ang (MA), Man Nuan (MN), Bing Dao (BDao), and Bin Shan (BS) exhibited a significant upregulation of the tea polyphenols (TP)/free amino acids (FAA) ratio. The former group was characterized by a sweet mellow taste, while the latter displayed a stronger taste profile. Furthermore, the analysis of volatile compounds demonstrated that geraniol and linalool were significantly upregulated in the PS, BD, DBS, DG, BS, and BDao regions, which were associated with tender and floral aromas. In contrast, isophorone, 2-pentyl furan, 1-octanol, D-limonene, and benzaldehyde were markedly enriched in the XN, BKN, MA, MN, SH, GFZ, and WLS regions, contributing to sweet and honey-like aromatic profiles. Altitude and mineral element phosphorus are potential key factors affecting the regional flavor differences in SDT. Specifically, SDT cultivated at higher altitudes and in soils with elevated available phosphorus content exhibited a greater likelihood of accumulating sweet mellow and floral compounds. This study provides scientific evidence for understanding the characteristic flavor profiles of SDT across different regions, offering valuable insights into the factors contributing to regional flavor differentiation in tea production. Full article

For Muslims, the Ka‘ba holds immense significance as the destination of pilgrimage—an obligatory act of worship—and as the direction toward which prayers are performed. The kiswa is a cover that has been placed on the Ka‘ba, the holiest place in Islam, since the Jāhiliyya period as an expression of respect for it. Although there are some exceptions in Islamic history, it is usually changed once a year and it was woven in different colours according to the period, and finally it became a tradition to be black. The kiswa of the Ka‘ba is one of the most important religious and political symbols of Islamic history. This article analyses the role of the kiswa of the Ka‘ba in the relations between Muslim rulers in the Islamic world throughout history. From the earliest periods of Islam, the kiswa has been recognized as a symbol of legitimacy and a means of asserting control over the administration of pilgrimage. Many states, such as the Abbāsids, Mamlūks, and Ottomans, expressed or reinforced their political legitimacy among Muslims by showing their influence over the Ka‘ba through the tradition of the kiswa. In the medieval Islamic world, Muslim states or local administrators of these states especially used the kiswa as a symbol of sovereignty, thus increasing their influence in the regions they governed. Some Muslim administrators who wanted to send the kiswa to the Ka‘ba competed with each other or prevented the other from sending the kiswa to the Ka‘ba because each year only one kiswa was sent to Mecca. In this study, the position of the kiswa as a political symbol in the quest for the legitimacy of Muslim rulers in Islamic history and the historical development of this issue are discussed and analysed with examples. Full article

This contribution is aimed at analyzing a series of life-prolonging and rejuvenating treatments (bcud len), recipes of ambrosia for immortality (bdud rtsi sman), and yogic and meditative techniques incorporated in the Man ngag bye ba ring bsrel (Ten Million of Quintessential Instructions, The Relics; henceforth Ring bsrel), a medical corpus mainly authored by Zur mkhar ba mNyam nyid rdo rje (1439–1475). The many treads of mNyam nyid rdo rje’s literary production reflect his rNying ma and bKa’ brgyud spiritual legacies: the author systematically elaborated materials drawn from the rNying ma gter ma tradition and complex medico–alchemical practices ascribed to the third Karmapa Rang byung rdo rje (1284–1339) and O rgyan pa rin chen dpal (1230–1309). The key ingredients of the recipes include saxifrage [bdud rtsi ’od ldan; Micranthes melanocentra; Saxifraga melanocentra], purple sage [lug mur; Phlomoides bracteosa], potent substances such as black aconite [bstan dug; Aconitum spicatum;], nightshade [thang phrom; Anisodus spp.; Mandragora caulescens], mercury–sulfide ashes (zla bcud; bcud rgyal), aphrodisiacs containing salamander meat [da byid, gangs sbal; Batrachuporus pinchonii], caterpillar fungus [dByar rtswa dgun ’bu; Cordyceps sinensis], and other substances endowed with hot potencies that can enhance gtum mo practices such as the dwarf rhododendron [da lis; Rhododendron spp.] and compounds containing long peer [pi pi ling; Piper longum], black pepper, [pho bar is; Piper nigrum], ginger, and so forth. The consecrated medicines and the rituals can bestow protection from any sort of diseases, diseases-carrier forces (gdon), and poisoning and lead to spiritual achievements. The analysis of these scriptural materials brings into focus the historical interrelation of diverse traditions that are represented by the heterogeneity of ideas and practices handed down through the Zur medical lineage. Full article

Contrary to popular notions of a perpetual antagonism between ‘Hinduism’ and ‘Islam’, played out on Indian soil over the centuries, this article examines the relatively recent origins of a Hindu–Muslim conflict in South Asia, situating it in the reconfigurations of ‘religion’ and religious identity that occurred under British colonial rule in the nineteenth and twentieth centuries. The multivalent and somewhat fluid categories of religious identification found in pre-modern India gave way to much more rigid and oppositional modern and colonial epistemic categories. While much has been written on how colonial policies and incipient Hindu and Muslim nationalisms shaped the contours of modern Hindu–Muslim conflict, little work has been done on the important role religious actors like Muslim and Hindu scholars and reformers played in shaping the discourse around what constituted Hinduism and Islam, and the relationship between the two, in the modern period. This study examines the first-known public theological debates between a Hindu scholar and a Muslim scholar, respectively, Swami Dayānanda Sarasvatī (1824–1883), founder of the reformist Arya Samaj and first exponent of a Hindu polemic against other religions, and Mawlānā Muḥammad Qāsim Nānautvī (1832–1880), co-founder of the seminary at Deoband and an important exponent of Islamic theological apologetics in modern South Asia, and how they helped shape oppositional modern Hindu and Muslim religious theologies. A key argument that Nānautvī contended with was Dayānanda’s claim that Islam is idolatrous, based on the contention that Muslims worship the Ka’ba, and thus, it is not a monotheistic religion, Hinduism alone being so. The terms of this debate show how polemics around subjects like monotheism and idolatry introduced by Christian missionaries under colonial rule were internalized, as were broader colonial epistemic categories, and developed a life of their own amongst Indians themselves, thus resulting in new oppositional religious identities, replacing more complex and nuanced interactions between Muslims and followers of Indian religions in the pre-modern period. Full article

The aim of this study was to compare the physical, sensorial, and microstructural properties of selected meat products with their plant-based alternatives to assess how closely the alternatives mimic the original products. Six meat analogue products, including Frankfurter sausage (SuA), steak (StA), Hungarian sausage (KA), minced meat (MA), salami (SaA), and burger (BA), were compared with their corresponding meat products (SuM, StM, KM, MM, SaM, and BM, respectively). The study measured colour indicators, texture parameters, sensory attributes, and microstructural properties. The redness values (a*) of the external surfaces of SuM and KM, as well as the hardness of MM, were similar to those of their alternative products, with no statistically significant differences (p > 0.05). Sensory evaluation revealed similar ratings for two attributes: product similarity and overall appearance. However, significant differences were found in the descriptors for animal character and meat taste. Full article

Two new species of Boletaceae (Hortiboletus rubroreticulatus and Tylopilus aurantiovulpinus) discovered during an investigation of the mycobiota of Central Vietnam (Kon Chu Rang Nature Reserve; Ta Dung National Park; Bidoup—Nui Ba National Park; Kon Ka Kinh National Park) are described on the basis of molecular and morphological data. Illustrated descriptions of their macro- and microscopic features and discussion on similar taxa are given. Additionally, eight species which were recorded for the first time in Vietnam are listed and illustrated here. A new combination Kgaria virescens was made for one of these species. These results were confirmed by the phylogenetic analysis based on nrITS1-5.8S-ITS2, nrLSU, and tef1α regions. Full article

Pathogenesis-related protein-4 (PR-4) is generally believed to be involved in physiological processes. However, a comprehensive investigation of this protein in tung tree (Vernicia fordii) has yet to be conducted. In this study, we identified 30 PR-4 genes in the genomes of Euphorbiaceae species and investigated their domain organization, evolution, promoter cis-elements, expression profiles, and expression profiles in the tung tree. Sequence and structural analyses indicated that VF16136 and VF16135 in the tung tree could be classified as belonging to Class II and I, respectively. Phylogenetic and Ka/Ks analyses revealed that Hevea brasiliensis exhibited a significantly expanded number of PR-4 genes. Additionally, the analysis of promoter cis-elements suggested that two VfPR-4 genes may play a role in the response to hormones and biotic and abiotic stress of tung trees. Furthermore, the expression patterns of VfPR-4 genes and their responses to 6-BA, salicylic acid, and silver nitrate in inflorescence buds of tung trees were evaluated using qRT-PCR. Notably, the expression of two VfPR-4 genes was found to be particularly high in leaves and early stages of tung seeds. These results suggest that VF16136 and VF16135 may have significant roles in the development of leaves and seeds in tung trees. Furthermore, these genes were found to be responsive to 6-BA, salicylic acid, and silver nitrate in the development of inflorescence buds. This research provides valuable insights for future investigation into the functions of PR-4 genes in tung trees. Full article

Natural thermoluminescence (TL) from the core of MD81349 marine calcareous biological ooze samples in the Ninetyeast Ridge of the equatorial northeast Indian Ocean and from the core of IODP306-U1312B in the high latitudes of the North Atlantic Ocean was studied. The spurious TL intensity of 395 °C at its peak is dose independent when the heating rate is 6 °C/s in a nitrogen atmosphere. TL signals have exhibited a significant correlation with the marine isotope stages (MIS) in the two oceans since the mid-Pleistocene era. High TL intensity corresponds to a negative δ¹⁸O in the interglacial stages, and low TL intensity corresponds to a positive δ¹⁸O in the glacial stages. The TL of both cores from the two oceans reveal that global climate has experienced eight cold and warm cycles since the mid-Pleistocene era. In this study, a single-frequency spectrum analysis of the MD81349 and U1312B TL cores in the last 300 ka is performed. Near the equator of the northeast Indian Ocean, the short cycles of 38 ka and 5 ka are more significant, while the cycle of 8 ka is more significant in the North Atlantic Ocean. In addition, a correlation analysis shows that the TL has a significant positive correlation with the trace element ¹³⁵Ba and a significant negative correlation with ⁴⁷Ti. The impurity ions (e.g., Ba²⁺, Mn²⁺ and Ti²⁺) doped in carbonate act as activators and suppressants, respectively. A time series of the TL of the calcareous biological ooze tests provide an important record of climate change. The source of the TL signal is also discussed. Full article

Non-enzymatic sensors with the capability of long-term stability and low cost are promising in glucose monitoring applications. Boronic acid (BA) derivatives offer a reversible and covalent binding mechanism for glucose recognition, which enables continuous glucose monitoring and responsive insulin release. To improve selectivity to glucose, a diboronic acid (DBA) structure design has been explored and has become a hot research topic for real-time glucose sensing in recent decades. This paper reviews the glucose recognition mechanism of boronic acids and discusses different glucose sensing strategies based on DBA-derivatives-based sensors reported in the past 10 years. The tunable pK_a, electron-withdrawing properties, and modifiable group of phenylboronic acids were explored to develop various sensing strategies, including optical, electrochemical, and other methods. However, compared to the numerous monoboronic acid molecules and methods developed for glucose monitoring, the diversity of DBA molecules and applied sensing strategies remains limited. The challenges and opportunities are also highlighted for the future of glucose sensing strategies, which need to consider practicability, advanced medical equipment fitment, patient compliance, as well as better selectivity and tolerance to interferences. Full article

Three new layered mixed metal phosphonates [CoMg(notpH₂)(H₂O)₂]ClO₄·nH₂O (CoMg·nH₂O), [Co₂Sr₂(notpH₂)₂(H₂O)₅](ClO₄)₂·nH₂O (CoSr·nH₂O), and [CoBa(notpH₂)(H₂O)_1.5]ClO₄ (CoBa) were synthesized by reacting a tripodal metalloligand Co^III(notpH₃) [notpH₆ = C₉H₁₈N₃(PO₃H₂)₃] with alkaline earth metal ions. Along with an increase in the radius of the alkaline earth metal ions, the 6-coordinate {MgO₆}, 7-coordinate {SrO₇}, and 9-coordinate {BaO₉} geometries are the distorted octahedron, capped triangular prism, and tricapped triangular prism, respectively. Consequently, the metalloligand Co(notpH₂)⁻ adopts variable coordination modes to bind the alkaline earth metal nodes, forming diverse layer topologies in the three mixed metal phosphonates. The AC impedance measurements revealed that the proton conductivities at 25 °C and 95% relative humidity (RH) follow the sequence: CoMg·nH₂O > CoSr·nH₂O > CoBa. As expected, CoMg·nH₂O exhibits a 28-fold enhanced value for proton conductivity (4.36 × 10⁻⁴ S cm⁻¹) compared with the previously reported isostructural compound, CoCa·nH₂O, at 25 °C and 95% RH due to the greater Lewis acid strength of Mg(II) lowering the pKa of the coordinated water. Full article

The objective of this study was to evaluate differences between the red onion cultivar and breeding line using models based on selected fluorescence spectroscopic data built using machine-learning algorithms from different groups of Trees, Functions, Bayes, Meta, Rules, and Lazy. The combination of fluorescence spectroscopy and machine learning is an original approach to the non-destructive and objective discrimination of red onion samples. The selected fluorescence spectroscopic data were used to build models using algorithms from the groups of Trees, Functions, Bayes, Meta, Rules, and Lazy. The most satisfactory results were obtained using J48 and LMT (Logistic Model Tree) from the group of Trees, Multilayer Perceptron, and QDA (Quadratic Discriminant Analysis) from Functions, Naive Bayes from Bayes, Logit Boost from Meta, JRip from Rules, and LWL (Locally Weighted Learning) from Lazy. The average accuracy of discrimination of onion bulbs belonging to ‘Asenovgradska kaba’ and a red breeding line equal to 100% was found in the case of models developed using the LMT, Multilayer Perceptron, Naive Bayes, Logit Boost, and LWL algorithms. The TPR (True Positive Rate), Precision, and F-Measure of 1.000 and FPR (False Positive Rate) of 0.000, as well as the Kappa statistic of 1.0, were determined. The results revealed the usefulness of the approach combining fluorescence spectroscopy and machine learning to distinguish red onion cultivars and breeding lines. Full article

Carbonate compensation depth (CCD) is an important factor in the global deep ocean and in global carbon cycling; however, its variabilities have not been well documented in previous studies. In this study, we investigate two deep-sea cores collected from the Philippine Sea in terms of geochronology and geochemical properties over the past ~900 kyr. The principle results are as follows: (1) Two magnetozones are determined from the sediment’s magnetic records, which can be correlated with the Brunhes and Matuyama chrons in the geomagnetic polarity timescale. (2) The age models can be refined by tuning the Ba and Sm intensities of the two studied cores to the global ice volume, and the estimated sediment accumulation rate is ~4 mm/kyr. (3) Chalky mud and the bulk carbon δ¹³C record vary abruptly at ~430 ka and imply 200 m shoaling of the CCD. Based on these results, a close link is inferred between marine productivity, aeolian dust, and CCD changes, which can be correlated with a major change that occurred during the Mid-Brunhes Event. Therefore, we propose that the sedimentary processes in the Philippine Sea are evidence of global climate change, providing a unique window to observe interactions between various environmental systems. Full article

C-axis-oriented EuBa₂Cu₃O_7−x oxide films that were 100 nm thick were irradiated with 0.5 MeV C monoatomic ions, 2 MeV C₄ cluster ions and 4 MeV C₈ cluster ions at room temperature. Before and after the irradiation, X-ray diffraction (XRD) measurement was performed using Cu-Ka X-ray. The c-axis lattice constant increased almost linearly as a function of numbers of irradiating carbon ions, but it rarely depended on the cluster size. Cluster size effects were observed in the XRD peak intensity and the XRD peak width. With increasing the cluster size, the decrease in peak intensity becomes more remarkable and the peak width increases. The experimental result implies that the cluster ions with a larger size provide a more localized energy deposition in a sample, and cause larger and more inhomogeneous lattice disordering. As such, local and large lattice disordering acts as a pinning center for quantum vortex; energetic carbon-cluster ion irradiation will be effective for the increment in the critical current of EuBa₂Cu₃O_7−x superconductors. Full article

The Russian Arctic region is lacking in studies on geochemical changes reflecting early sediment diagenesis in lake environments. The paper presents new data on the compositions of bottom sediments and sediment pore water from two lakes of the Norilo–Pyasinskaya water system in Arctic Siberia. Lakes Pyasino and Melkoye occupy basins left by glaciers that originated from the Putorana Plateau during the Last Glacial Maximum (LGM). Clayey sediments were continuously deposited in the lakes, and the depositional environment has changed only slightly for the last ca. 20 ka. Two sediment cores with lengths of 4.0 and 3.2 m were collected in Lakes Pyasino and Melkoye, respectively, with a Livingstone-type piston corer providing undisturbed, stratigraphically consistent sedimentary sequences. Their analyses revealed a change from oxidized to reduced conditions at a depth of ~10 cm. The concentrations of Ca²⁺, Mg²⁺, Na⁺, and K⁺, as well as the HCO₃⁻/Ca²⁺ ratio in pore water, showed a depthward increase indicating the progressive degradation of organic matter. Another trend was the gradual decrease in SO₄²⁻ alongside increasing HCO₃⁻/SO₄²⁻ caused by bacterial sulfate reduction, although this was rather weak, judging by the low concentrations of S (II) bound to Fe-sulfides, H₂S, etc. Additionally, the microbial digestion of organic matter caused a release of its mobile components, which led to the enrichment of the water in NO₃⁻, PO₄³⁻, and DOC. Most of the analyzed elements (Al, B, Ba, Co, Cu, Mo, Ni, Si, Sr, V, and Zn) reach higher concentrations in the pore water than in the lake water above the water-sediment boundary, which is evidence of diagenetic processes. As a result of redox change, immobile Fe (III) and Mn (IV) natural oxides were reduced to mobile Fe (II) and Mn (II) species and migrated from the solid phase to the pore water, and eventually precipitated as authigenic Fe sulfides and Mn carbonates. The results are useful for better understanding the early diagenesis processes in different geographical settings over the huge Eurasian continent. Full article