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Littérature scientifique sur le sujet « Schweinfurthii »

Auteur : Grafiati

Publié le 4 juin 2021

Mis à jour le 18 février 2022

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Articles de revues sur le sujet "Schweinfurthii"

Klausmeyer, Paul, Que N. Van, Johnson Jato, Thomas G. McCloud et John A. Beutler. « Schweinfurthins I and J fromMacaranga schweinfurthii⊥ ». Journal of Natural Products 73, n^o 3 (26 mars 2010) : 479–81. http://dx.doi.org/10.1021/np9006348.

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Beutler, John A., Johnson Jato, Gordon M. Cragg et Michael R. Boyd. « Schweinfurthin D, A Cytotoxic Stilbene fromMacaranga schweinfurthii ». Natural Product Letters 14, n^o 5 (septembre 2000) : 399–404. http://dx.doi.org/10.1080/10575630008043774.

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Treadwell, Edward M., Steven C. Cermak et David F. Wiemer. « Synthesis of Schweinfurthin C, a Geranylated Stilbene fromMacaranga schweinfurthii ». Journal of Organic Chemistry 64, n^o 23 (novembre 1999) : 8718–23. http://dx.doi.org/10.1021/jo9908795.

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Ehiem, James Chinaka, Victor Ifeanyichukwu Obiora Ndirika, Udochukwu Nelson Onwuka et Vijaya Raghavan. « The moisture-dependent flow characteristics of Canarium schweinfurthii Engler nuts ». Research in Agricultural Engineering 65, No. 2 (2 juillet 2019) : 40–47. http://dx.doi.org/10.17221/47/2018-rae.

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The flow characteristics of three varieties of Canarium schweinfurthii Engler nuts (Canarium schweinfurthii short, Canarium schweinfurthii long and Canarium schweinfurthii large – CSHTLRG) relevant for the design and development of handling and storage systems was studied at three different moisture levels (10.20, 17.23 and 25.06% wet basis). The flow characteristics investigated include the normal stress, the shear stress, the initial shear stress, the coefficient and angle of the internal friction, the coefficient of mobility and the size of the discharge opening. An Instron universal machine at a cross-head speed of 25 mm·min–1 was used to obtain the shear force. The results obtained showed that all the flow properties increased with an increase in the moisture content except for the coefficient of mobility. Moreover, the variety of the C. schweinfurthii nuts had a significant effect (P < 0.05) on the flow characteristics. CSHTLRG had the best ability to flow freely than the other varieties. The hopper side wall angle for all the varieties ranged from 67–70°. Round, square and triangle shapes are all acceptable for the smooth flow of C. schweinfurthii nuts.

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Owolabi, Moses S., Akintayo Ogundajo, Balogun Olaoye Solomon, Logunleko Olatunde, Noura S. Dosoky et William N. Setzer. « Essential Oil Compositions, Antibacterial and Antifungal Activities of Nigerian Members of the Burseraceae : Boswellia dalzielii and Canarium schweinfurthii ». Natural Product Communications 15, n^o 8 (août 2020) : 1934578X2094694. http://dx.doi.org/10.1177/1934578x20946940.

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The Burseraceae is an important family of resin-producing trees and shrubs, which have yielded biologically active essential oils. Boswellia dalzielii and Canarium schweinfurthii are members of the family that are used in West African traditional medicine for a variety of ailments. The leaf essential oils of B. dalzielii have been obtained from 2 different locations in north-central Nigeria, while the leaf and stem bark essential oils of C. schweinfurthii have been obtained from 3 locations. The chemical compositions of the essential oils have been determined by gas chromatography-mass spectrometry and show wide variation, especially for the leaf essential oils. The leaf essential oils of B. dalzielii and C. schweinfurthii have been screened for antibacterial and antifungal activity; C. schweinfurthii leaf essential oil showed remarkable activity against Aspergillus niger with a minimum inhibitory concentration of 78.1 μg/mL.

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Treadwell, Edward M., Steven C. Cermak et David F. Wiemer. « ChemInform Abstract : Synthesis of Schweinfurthin C (I), a Geranylated Stilbene from Macaranga schweinfurthii. » ChemInform 31, n^o 11 (10 juin 2010) : no. http://dx.doi.org/10.1002/chin.200011183.

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Yahata, Masaki, Hisato Kunitake, Kiichi Yasuda, Kensuke Yamashita, Haruki Komatsu et Ryoji Matsumoto. « Production of Sexual Hybrid Progenies for Clarifying the Phylogenic Relationship between Citrus and Citropsis species ». Journal of the American Society for Horticultural Science 131, n^o 6 (novembre 2006) : 764–69. http://dx.doi.org/10.21273/jashs.131.6.764.

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The reciprocal crosses between two citrus cultivars and Citropsis schweinfurthii (Engl.) Swing. & M. Kell. were conducted. The cross between `Nanpu' tangor {`Kiyomi' tangor (Citrus unshiu Marc. × C. sinensis Osbeck) × `Fairchild' tangerine-tangelo [clementine (C. clementina hort. ex Tanaka) × `Orlando' tangelo (C. paradisi Macf. × C. reticulata Blanco)]} and C. schweinfurthii produced some developed seeds with an average weight approximately 1/10 of that of the seeds obtained from open pollination in `Nanpu' tangor. These seeds germinated on Murashige and Tucker medium, and three and 28 seedlings were obtained from crosses using C. schweinfurthii as the female and the male parent, respectively. The absolute nuclear genome size of these seedlings [∼0.84 pg of DNA content per somatic nucleus (2C)] was intermediate of that of the `Nanpu' tangor (0.78 pg/2C) and C. schweinfurthii (0.90 pg/2C) seedlings. The chromosome counts of the young leaves revealed that they were diploids (2n = 2X = 18). Furthermore, the hybridity of the seedlings obtained from the reciprocal crosses between `Nanpu' tangor and C. schweinfurthii was confirmed by randomly amplified polymorphic DNA (RAPD) analysis and cleaved amplified polymorphic sequence (CAPS) analysis. These hybrids will be utilized as important materials for investigating the phylogenic relationships between these genera in the subfamily Aurantioideae.

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Maroyi, Alfred. « Review of Ethnomedicinal, Phytochemical and Pharmacological Properties of Lannea schweinfurthii (Engl.) Engl. » Molecules 24, n^o 4 (18 février 2019) : 732. http://dx.doi.org/10.3390/molecules24040732.

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Lannea schweinfurthii is a valuable medicinal plant species among different ethnic groups in tropical Africa. The aim of the current study was to review existing literature on the ethnomedicinal uses, phytochemistry and pharmacological properties of L. schweinfurthii in an effort to evaluate the therapeutic potential of the species. The relevant information on the ethnomedicinal uses, phytochemistry and pharmacological properties of L. schweinfurthii was generated from several sources including books, book chapters, theses, scientific reports and journal articles obtained from the library and internet sources such as SciFinder, Wiley, Web of Science, American Chemical Society publications, PubMed, BMC, Elsevier, Science Direct, Scielo and Scopus. Traditionally, L. schweinfurthii is used against reproductive system disorders, respiratory disorders, injuries, headache, blood system disorders, infections or infestations and gastro-intestinal disorders. The phytochemical compounds that have been isolated from L. schweinfurthii include alkaloids, anthocyanins, flavonoids, glycosides, phenols, saponins, steroids, tannins and terpenoids. The in vitro and animal studies carried out so far from the crude extracts and compounds isolated from the species exhibited acetylcholinesterase inhibitory, anti-apoptotic, antibacterial, antiviral, anti-giardial, anti-inflammatory, antioxidant, antiplasmodial, antitrypanosomal, hepatoprotective, larvicidal and cytotoxicity activities. Detailed ethnopharmacological studies emphasizing clinical and toxicological evaluations are needed to assess efficacy and safety of the species as herbal medicine.

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Marsi Mbayo Kitambala, Emery Kalonda Mutombo, Blandine Nkiko Niyibizi, Grégoire Sangwa Kamulete, Glauber Mbayo Kalubandika, Jean Mulamba Muidikija, Evodie Numbi wa Ilunga et al. « The in vitro antisickling effect of purified alkaloids of Cremaspora triflora (Thonn.) K. Schum. (Rubiaceae) and Macaranga schweinfurthii Pax. (Euphorbiaceae) ». World Journal of Advanced Research and Reviews 9, n^o 3 (30 mars 2021) : 129–37. http://dx.doi.org/10.30574/wjarr.2021.9.3.0074.

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Introduction and objective: Sickle cell disease is an inherited pathology to an abnormality of hemoglobin precisely hemoglobin S for which there is no curative therapy. It mainly affects sub-Saharan African and Caribbean populations. Thus, this study aims to make the phytochemical screening of Cremaspora triflora and Macaranga schweinfurthii as well as to evaluate the antisickling activity of their purified alkaloids. Methodology: Chemical screening was performed using color and precipitation tests as well as the foam index method. The extraction of the alkaloids was carried out with organic solvents in a basic medium while the purification by open column chromatography. The evaluation of the antisickling activity was carried out by Emmel’s test. Results: The chemical screening highlighted alkaloids, steroids, saponins, tannins, and terpenoids in the species studied. Flavonoids and anthocyanins were present in organs of Macaranga schweinfurthii, but absent in Cremaspora triflora. The extraction showed that Macaranga schweinfurthii leaves contained 0.59% alkaloids and 0.73% alkaloids in Cremaspora triflora leaves. The alkaloids purification allowed to obtain an alkaloidal fraction MS1 (1.24 g, 70.05%) from Macaranga schweinfurthii and two fractions [CT2 (0.934 g, 63.97%) and CT3 (0.006 g, 0.41 %)] from Cremaspora triflora which tested positive with Dragendorff and Wagner reagents. The antisickling activity evaluation showed that the SIR varied between 36.00% (0.25 mg/ml) and 90.66% (1 mg/ml) for the alkaloid solutions of Cremaspora triflora (IC50 of 0.51 mg/ml) as well as between 4.00% (0.25 mg/ml) and 33.33% (1 mg/ml) for the alkaloid solutions of Macaranga schweinfurthii (IC50 of 1.40 mg/ml). Conclusion: This study showed that the purified alkaloids of the studied plant species have an inhibitory power on sickling.

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Hall, A. V. « ORCHIDACEAE ». Bothalia 18, n^o 2 (23 octobre 1988) : 186. http://dx.doi.org/10.4102/abc.v18i2.1045.

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Thèses sur le sujet "Schweinfurthii"

Wilke, Claudia. « Communication and cooperation in wild chimpanzees (Pan troglodytes schweinfurthii) ». Thesis, University of York, 2016. http://etheses.whiterose.ac.uk/16373/.

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Comparisons between animal and human communication are invaluable for understanding the evolution of language and, as our closest living relatives, chimpanzees can provide particularly important insights into this. Here I examined unimodal (UM) and multimodal (MM) communication in wild chimpanzees, in an integrated manner. I found that although MM signals were produced infrequently, and at lower rates compared to captivity, the vast majority of adult and sub-adult individuals did freely combine vocal, gestural and facial signals to produce MM signals. A total of 48 free MM signal combinations were observed, incorporating a wide range of different signal types from different modalities. Focusing on one specific vocalgestural MM signal, I found that MM combinations and UM gestural signals were more successful in eliciting responses compared to UM vocal signals. To investigate signal function more systematically I focused on one common grooming gesture, the big loud scratch (BLS), and tested several competing functional hypotheses. I found little evidence to support the hypotheses that this signal operates as an attention-getter, or as a referential signal. In contrast, my data suggested that in this community of chimpanzees, the BLS facilitates the negotiation of roles within a grooming bout. Groomers used BLSs to request grooming during grooming bouts and the BLS seemed to show willingness to groom, both to initiate a grooming bout, and potentially during a bout when groomees intend to start grooming their partner. Finally, to explore the theoretical link between the evolution of communication and cooperation I tested whether, on an individual level, there was a positive relationship between communicativeness and cooperativeness in chimpanzees. In contrast to theoretical predictions, I found a significantly negative relationship between these two domains, indicating that more communicative chimpanzees were less cooperative. I explore several potential explanations for this highly unexpected finding.

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Wakibara, James. « Frugivory and seed dispersal by chimpanzees(Pan troglodytes schweinfurthii)at Mahale, Tanzania ». 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/149127.

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Townsend, Simon W. « Intra-sexual competition and vocal counter-strategies in wild female chimpanzees (Pan troglodytes schweinfurthii) ». Thesis, St Andrews, 2009. http://hdl.handle.net/10023/774.

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Gruber, Thibaud. « A cognitive approach to the study of culture in wild chimpanzees (Pan troglodytes schweinfurthii) ». Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/3101.

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The question of animal culture has been of interest for decades. Chimpanzees (Pan troglodytes) have played a key role in the debate of whether or not it is appropriate to use the term ‘culture' to describe animal behaviour and they continue to be one of the prime species for the study of the origins of human culture. Data suggesting that chimpanzees can be considered a cultural species continue to accumulate, but this has only enhanced the debate between proponents and opponents of animal culture. Opponents do not deny that behavioural diversity exists between different populations of the same species, but they maintain that such phenomena have little to do with human cultures and may be the result of genetic and environmental influences. In their view, human cultures are centred on socially shared sets of ideas, not behavioural traditions. In this thesis, my goal is to tackle this problem and to investigate whether a cognitive dimension can be found in some behavioural patterns of chimpanzees that have been put forward as examples of animal culture. To this end, I examine the different factors that could account for the development of tool use in animals (genetics, ecology, social). My first empirical contribution is a study of the tool use behaviour of the chimpanzees' closest relative, the bonobos, which are known to be limited tool-users in the wild. I show that captive bonobos are as flexible tool-users as chimpanzees, suggesting that genetic factors are unlikely to account for differences in tool use behaviour in the Pan clade. Second, through the use of field experiments, I show that wild chimpanzees from different Ugandan communities respond to the same apparatus and task in strikingly different ways. I interpret this finding as an outcome of differences in cultural knowledge, mainly because the affordances of their immediate environment do not determine their tool use behaviour. Finally, through a broad ecological and tool use survey of different chimpanzee communities in Uganda, I show that current ecological differences are poor predictors of tool use. I conclude that, if ecology plays a role in the development of tool use, then its influence is that of a selective force. Finally, when reviewing the outcome of this research I will argue that there is a profound cognitive dimension to tool use in wild chimpanzees, suggesting that behaviourally based definitions of animal culture may miss a key feature of the phenomenon, at least in chimpanzees. Chimpanzees are not only a cultural species, they also have a cultural mind.

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Laporte, Marion N. C. « Pant-grunts in wild chimpanzees (Pan troglodytes schweinfurthii) : the vocal development of a social signal ». Thesis, University of St Andrews, 2011. http://hdl.handle.net/10023/1973.

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While the gestural communication of apes is widely recognised as intentional and flexible, their vocal communication still remains considered as mostly genetically determined and emotionally bound. Trying to limit the direct projections of linguistic concepts, that are far from holding a unified view on what constitute human language, this thesis presents a detailed description of the pant-grunt vocalisation usage and development in the chimpanzees (Pan troglodytes schweinfurthii) of the Budongo forest, Uganda. Pant-grunts are one of the most social vocalisations of the chimpanzee vocal repertoire and are always given from a subordinate individual to a dominant. The question of how such a signal is used and develops is critical for our understanding of chimpanzee social and vocal complexity in an ontogenetical and phylogenetical perpective. Results suggest that pant-grunt vocalisations can be used in a flexible way, both in their form and usage within a social group. More specifically, chimpanzees seemed to take into account the number and identity of surrounding individuals before producing these vocalisations. At the acoustic level, pant-grunts seem to be very variable vocalisations that corresponded to different social situations commonly encountered. Grunts are one of the first vocalisations produced by babies but they are not first produced in social contexts. Although some modifications of the social grunts form and usage could not entirely be attributed to maturation only, the role of the mother seemed to be restricted. Her direct influence was perhaps more visible in the rhythmic patterns of chorusing events. Taken together, this thesis suggests that chimpanzee vocalisations are more flexible in their usage, production and acquisition than previously thought and might therefore be more similar to gestural communication.

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Bates, Lucy. « Cognitive aspects of travel and food location by chimpanzees (Pan troglodytes schweinfurthii) of the Budongo Forest Reserve, Uganda ». Thesis, University of St Andrews, 2005. http://hdl.handle.net/10023/2697.

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Finding food in tropical forests poses a potentially major problem for chimpanzees, whose ranging is thought primarily to be directed at locating suitable food resources: (1) chimpanzees are frugivorous, large bodied and live in large home ranges; (2) they lack specialised sensory or locomotor abilities, and terrestrial travel is known to be costly; but (3) fruits are randomly distributed in space and time. Evidence from studies of captive individuals suggests chimpanzees are capable of remembering the locations of out of sight resources and can compute least distance routes to these resources, but whether this ability translates to the natural foraging behaviour of wild chimpanzees has never been investigated. My observational study was designed to assess how the chimpanzees (Pan troglodytes schweinfurthii) of Budongo Forest, Uganda, locate these patchy resources. I mapped the routes of 14 focal individuals over a 12-month period. I considered how these foraging routes were structured by breaking the path into segments of travel between resources. Consecutive segments of travel between resources were found not to be independent, but assembled into "super-segments" that take in a number of resources along one trajectory. These super-segments are not necessarily directed towards feeding resources, however: travel is not always food directed. Comparisons of actual chimpanzee routes with randomly generated simulations suggest most individuals do not attempt to minimise their travel distances. There is evidence to suggest energetically stressed individuals can remember the locations of recently visited food resources and return to these patches in order to minimise travel distances when necessary, but overall, food is not difficult to find for this community of chimpanzees. I propose this is because males defend a territory with super-abundant food resources, meaning availability is not a limiting factor of foraging. Male chimpanzees can be characterised as convenience feeders, taking food whilst satisfying other, social needs.

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Odei-Addo, Frank. « Purification and characterization of serine proteinase inhibitors from two South African indigenous plants, Acacia karoo and Acacia schweinfurthii ». Thesis, Nelson Mandela Metropolitan University, 2009. http://hdl.handle.net/10948/1291.

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Serine proteases are known to perform a wide range of functions essential to life; however there has to be some form of control mechanism in place. One of the many control mechanisms is their specific inhibition by protein proteinase inhibitors. Proteinase inhibitors in plants, present in their seeds, participate in defense mechanisms and their production is induced by herbivory or wounding. Plant proteinase inhibitors have been reported to inhibit a variety of serine proteinases, including enzymes of the blood coagulation cascade. In this study, various indigenous seed extracts were screened for potential serine proteinase inhibition. Acacia schweinfurthii was selected as a potential inhibitor that inhibited trypsin and factor X. The AS inhibitor was successfully purified to homogeneity by precipitating with 80 percent (v/v) acetone and the sequential chromatographic steps including ion-exchange chromatography, size exclusion chromatography, affinity purification on a trypsin-agarose column and RP-HPLC. Reducing SDS-PAGE conditions revealed an inhibitor of two polypeptide chains A and B of approximate molecular weights 16 and 10 kDa, respectively, and under non-reducing conditions, 25 kDa was observed. The inhibitor was shown to inhibit trypsin, chymotrypsin and factor X indicating the dynamic nature of the reactive site. An enzyme: inhibitor ratio of 1:1, and a Ki of 3.45nM was determined for the AS inhibitor on trypsin, and the inhibitor also weakly inhibit chymotrypsin. AS inhibitor and STI inhibited factor X with a Ki values of 13.7nM and 77.5μM respectively. Amino acid analysis revealed Mmin values of the A- and B- chain of 15,000 and 7,800, respectively. The effect of seed extracts on the activated partial thrombin time (APTT) and prothrombin time (PT) was tested. No prolongation of the PT was obtained. For the crude extracts of AK and AS, IC200 values of 4.6 and 189.62 μg/mL, were respectively obtained. For the purified fractions of STI, AS and AK, IC200 values of 51.5, 114.31 and 893.8 μg/ml were observed, respectively. Keywords: proteinase inhibitors, Acacia species, trypsin inhibitor, FX inhibitor.

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Nkouam, Gilles Bernard. « Conservation des fruits du karité (Vitellaria paradoxa Gaertn.) et de l'aiélé (Canarium schweinfurthii Engl.) : isothermes de sorption d'eau et extraction des matières grasses des fruits stockés ». Thesis, Vandoeuvre-les-Nancy, INPL, 2007. http://www.theses.fr/2007INPL058N/document.

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La méthode microgravimétrique statique a permis d’observer que la pulpe de l’aiélé est plus hygroscopique que l’amande de karité à 25°C. A l’inverse, on fait l’observation contraire entre 35 et 55°C. Le modèle d’Oswin décrit le mieux les données de sorption des deux produits sur toute la gamme d’activité de l’eau. Les isothermes de l’amande de karité et de la pulpe de l’aiélé présentent le phénomène d’hystérésis entre 25 et 55°C. La conservation de ces oléagineux doit s’effectuer dans une atmosphère d’humidité relative comprise entre 40 et 60% afin d’obtenir des teneurs en eau recommandées. Un modèle adapté de prédiction des isothermes de sorption de ces oléagineux en deçà de 25°C et au delà de 55°C a été obtenu. L’extraction de la matière grasse au CO2 supercritique donne des rendements inférieurs à ceux obtenus de l’extraction à l’hexane. L’indice d’acide des matières grasses extraites au CO2 est supérieur à celui des lipides extraits à l’hexane. Ces indices, pour les lipides extraits des produits stockés à 18°C, sont les plus élevés. Quelque soient le mode de stockage et le solvant d’extraction, l’indice d’iode baisse avec le stockage. Le CO2 présente une sélectivité vis-à-vis de l’acide linolénique. Les lipides extraits au CO2 présentent les taux d’acides gras libres les plus élevés. Il ressort des résultats que le stockage -33°C est le meilleur. Toutefois, il ne doit pas dépasser 5 mois. L’extraction des lipides au CO2 supercritique doit utiliser les fruits frais ou stockés à -33°C. Les produits stockés à 18°C sont les plus durs et la dureté est corrélée négativement à la teneur en eau, mais positivement à l’indice d’acide des matières grasses extraites
The static microgravimetric method permitted to observe that the Canarium pulp was more hygroscopic at 25°C than the sheanut kernels. On the other hand, sheanut kernel was more hygrocopic in the temperature range 35°C-55°C. The Oswin model best described the sorption data of the two products in the whole water activity range. Hysteresis was observed in the entire temperature range 25-55°C for sheanut kernel and Canarium pulp. It is suggested that these products should be stored in an environment with a relative humidity of 40-60%, in order to attain the recommended moisture content for storage. A model was adapted to predict the sorption isotherms of shea and Canarium below 25°C and above 55°C. The oil yields obtained with supercritical CO2 were lower than those obtained with hexane. The acid values of butter and oil extracted with carbon dioxide were greater than those of lipids extracted using hexane. The acid values of samples stored at 18°C were the largest. The iodine value of the oils decreased with an increase of the storage period, irrespective of the storage temperature and the solvent used for extraction. The extraction with CO2 did not extract linolenic acid. The proportion of free fatty acids increased when carbon dioxide was used for extraction. From the foregoing, it is suggested that storage at -33°C for up to 5 months presents the best means of preserving these products. Only fresh or fruits stored at -33°C should be used for the extraction of lipids using carbon dioxide. The products stored at 18°C were the most hard and the hardness was correlated negatively to the water content, but positively to the acid value of fatty material extracted

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Llorente, Caño Marina. « Estudio comparado de la conducta nidificadora de los chimpancés ("Pan troglodytes schweinfurthii") de la comunidad de Kanyawara (Parque Nacional de Kibale, Uganda) ». Doctoral thesis, Universitat de Barcelona, 2004. http://hdl.handle.net/10803/2724.

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El objetivo principal es el estudio exhaustivo de la conducta nidificadota de los chimpancés de Kanyawara, teniendo en cuenta una amplia lista de variables (sexo, edad, variaciones estacionales, características del hábitat.) que podrían incidir sobre la mencionada conducta. Se completa el trabajo con la colaboración de mapas de macro-distribución de los sitios de nidificación en el área de estudio y micro-distribución de los nidos en las zonas de descanso, así como con el seguimiento de la dinámica de reutilización.

Finalmente, los resultados conseguidos se quieren comparar con otros estudios, sobre este comportamiento en grandes simios salvajes, con el fin de establecer semejanzas y diferencias ecológicas, sociales y/o culturales.

La metodología utilizada es la usual en los trabajos etológicos de campo. El trabajo de campo va a suponer el seguimiento de la comunidad de chimpancés estudiada durante un año. El procedimiento empleado implicó el seguimiento diario (desde el amanecer hasta el crepúsculo) y el seguimiento de episodios nidificadores de los subgrupos de estudio, registrando sistemáticamente las conductas y variables relacionadas con la construcción de camas nocturnas y diurnas, además de la toma de medidas acerca de los nidos y de los sitios de anidaje conocidos, en ausencia de chimpancés, para su posterior análisis. Se presenta una amplia muestra, tanto por el número de nidos estudiados como por el número de episodios nidificadores nocturnos y diurnos observados.

Entre las aportaciones de esta investigación cabe destacar el extenso y rico conjunto de datos descriptivos sobre la construcción de nidos de los chimpancés de la comunidad de Kanyawara.

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Schoene, Claudia Ulrike Regina. « Assessment of the impact of a newly introduced free-ranging group of chimpanzees (Pan troglodytes schweinfurthii) on the vegetation of Ngamba Island, Lake Victoria, Uganda ». Pretoria : [s.n.], 2003. http://upetd.up.ac.za/thesis/available/etd-05062005-151800.

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Livres sur le sujet "Schweinfurthii"

Plumptre, Andrew J. Eastern chimpanzee (Pan troglodytes schweinfurthii) : Status survey and conservation action plan, 2010-2020. Gland, Switzerland : IUCN, 2010.

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Rochow, Christian Erich. Splitter : Sondierungen Zum Theater Mit Beitragen Von Berna Ercan Und Reiner Schweinfurth (Literarhistorische Untersuchungen). Peter Lang Publishing, 2003.

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Chapitres de livres sur le sujet "Schweinfurthii"

Azimova, Shakhnoza S., et Anna I. Glushenkova. « Acacia schweinfurthii ». Dans Lipids, Lipophilic Components and Essential Oils from Plant Sources, 556. London : Springer London, 2012. http://dx.doi.org/10.1007/978-0-85729-323-7_1779.

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Sher, Hassan, Rainer W. Bussmann, Narel Y. Paniagua-Zambrana et Ikram Ur-Rahman. « Fagonia bruguieri DC Fagonia indica var. schweinfurthii Hadidi Zygophyllaceae ». Dans Ethnobotany of the Himalayas, 1–3. Cham : Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45597-2_101-1.

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Sher, Hassan, Rainer W. Bussmann, Narel Y. Paniagua-Zambrana et Ikram Ur-Rahman. « Fagonia bruguieri DC Fagonia indica var. schweinfurthii Hadidi Zygophyllaceae ». Dans Ethnobotany of the Himalayas, 1–4. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-45597-2_101-2.

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Sher, Hassan, Rainer W. Bussmann, Narel Y. Paniagua-Zambrana et Ikram Ur Rahman. « Fagonia bruguieri DC Fagonia indica var. schweinfurthii Hadidi Zygophyllaceae ». Dans Ethnobotany of the Himalayas, 929–32. Cham : Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-57408-6_101.

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Beutler, John A., Johnson G. Jato, Gordon Cragg, David F. Wiemer, Jeffrey D. Neighbors, Maya Salnikova, Melinda Hollingshead, Domenic A. Scudiero et Thomas G. Mccloud. « The Schweinfurthins ». Dans Medicinal and Aromatic Plants, 301–9. Dordrecht : Springer Netherlands, 2006. http://dx.doi.org/10.1007/1-4020-5449-1_22.

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Khare, C. P. « Schweinfurthia sphaerocarpa A. Br. » Dans Indian Medicinal Plants, 1. New York, NY : Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-70638-2_1458.

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Lawal, Fatimah, et Thilivhali E. Tshikalange. « Lannea schweinfurthii ». Dans Underexplored Medicinal Plants from Sub-Saharan Africa, 185–92. Elsevier, 2020. http://dx.doi.org/10.1016/b978-0-12-816814-1.00028-4.

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Kuete, V. « Canarium schweinfurthii ». Dans Medicinal Spices and Vegetables from Africa, 379–84. Elsevier, 2017. http://dx.doi.org/10.1016/b978-0-12-809286-6.00016-9.

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Marlen, Fröhlich, et Pika Simone. « Gestural usage and development in two chimpanzee groups of different subspecies (Pan troglodytes verus/P.t. schweinfurthii) ». Dans The Chimpanzees of the Taï Forest, 422–39. Cambridge University Press, 2019. http://dx.doi.org/10.1017/9781108674218.027.

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Taber, Douglass F. « Stereoselective C–O Ring Construction : The Keck Synthesis of Bryostatin I ». Dans Organic Synthesis. Oxford University Press, 2015. http://dx.doi.org/10.1093/oso/9780190200794.003.0046.

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Vladimir Gevorgyan of the University of Illinois, Chicago homologated (Angew. Chem. Int. Ed. 2011, 50, 2808) the ketone 1 to the epoxide 2 using cyanogen bromide. Manabu Abe of Hiroshima University optimized (J. Am. Chem. Soc. 2011, 133, 2592) the diastereoselectivity of the Paternò-Büchi addition of benzophenone 4 to the secondary allylic alcohol 3 to give 5. Debaraj Mukherjee of the Indian Institute of Integrative Medicine constructed (Org. Lett. 2011, 13, 576) the lactone 7 by adding acetate to 6, with remarkable regioselectivity and diastereoselectivity. Tristan H. Lambert of Columbia University employed (Org. Lett. 2011, 13, 740) cyclopropenium activation to cyclize the diol 8 to 9. Brian L. Pagenkopf of the University of Western Ontario designed (Org. Lett. 2011, 13, 572) a Co catalyst for the diastereoselective oxidative cyclization of 11 to 12. Goverdhan Mehta of the Indian Institute of Science, Bangalore, found (Tetrahedron Lett. 2011, 52, 1749) that the Z-diene 13 cyclized efficiently to give the cyclic ether 14. Fabien Gagosz of the Ecole Polytechnique found (J. Am. Chem. Soc. 2011, 133, 7696) that the protonated complex derived from the allene 15 abstracted a hydride from the distal benzyl group, leading to cyclization to 16. Haruhiko Fuwa of Tohoku University found (Org. Lett. 2011, 13, 1820) that the unsaturated thioester 17 cyclized under gentle acid catalysis. Unsaturated esters (not illustrated) can be cyclized under alkaline conditions (Tetrahedron Lett. 2011, 52, 1372). Malcolm D. McLeod of the Australian National University established (J. Org. Chem. 2011, 76, 1992) a combination of Escherichia coli-derived enzyme and an α-d-glucuronyl fluoride donor for converting an alcohol 19 to the corresponding glucuronide metabolite 20. En route to an improved synthesis of the schweinfurthins, potent antineoplastic agents, David F. Wiemer of the University of Iowa devised (J. Org. Chem. 2011, 76, 909) the cyclization/ benzyloxymethyl transfer cascade that transformed 21 into 22. The synthesis and biological activity of the bryostatins is developing into one of the great success stories of natural products chemistry. A key step in the total synthesis of bryostatin 1 25 designed (J. Am. Chem. Soc. 2011, 133, 744) by Gary E. Keck of the University of Utah was the Rainier cyclization of 23 to 24.

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Actes de conférences sur le sujet "Schweinfurthii"

Sheehy, Ryan M., Zoe C. Bachman et Raymond J. Hohl. « Abstract 811 : Schweinfurthin activity enhanced by verapamil ». Dans Proceedings : AACR Annual Meeting 2014 ; April 5-9, 2014 ; San Diego, CA. American Association for Cancer Research, 2014. http://dx.doi.org/10.1158/1538-7445.am2014-811.

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Manfredi, Barbara, et Raymond J. Hohl. « Abstract 316 : Effect of schweinfurthins on malignant plasma cells ». Dans Proceedings : AACR Annual Meeting 2021 ; April 10-15, 2021 and May 17-21, 2021 ; Philadelphia, PA. American Association for Cancer Research, 2021. http://dx.doi.org/10.1158/1538-7445.am2021-316.

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Turbyville, Thomas, Alla Brafman, De Chen, Kathryn Romanchuck, John Beutler, Karlyne Reilly et Stephen Lockett. « Abstract 3429 : Coordination of cell cycle repression and reduced cytoskeletal tension by the small molecule natural product, Schweinfurthin A. » Dans Proceedings : AACR 104th Annual Meeting 2013 ; Apr 6-10, 2013 ; Washington, DC. American Association for Cancer Research, 2013. http://dx.doi.org/10.1158/1538-7445.am2013-3429.

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« Growth Performance and Body Composition of Clarias gariepinus Fingerlings Fed Varying Inclusion Level of Canarium schweinfurtii (African Elemi) Oil ». Dans International Conference on Advances in Agricultural, Biological & Environmental Sciences. International Institute of Chemical, Biological & Environmental Engineering, 2014. http://dx.doi.org/10.15242/iicbe.c1014156.

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Bao, Xingfeng, Naoko Hata, Kishan Agarwala, Zichun Wang, Winnie Lee, Lana Parent, Hongsheng Cheng et al. « Abstract 2788 : Antiproliferative schweinfurthins reveal a role of the trans-Golgi-network in mTOR-AKT signaling and cancer cell survival ». Dans Proceedings : AACR Annual Meeting 2014 ; April 5-9, 2014 ; San Diego, CA. American Association for Cancer Research, 2014. http://dx.doi.org/10.1158/1538-7445.am2014-2788.

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Rapports d'organisations sur le sujet "Schweinfurthii"

Wiemer, David F. The Schweinfurthins : New Leads for Novel Breast Cancer Therapy. Fort Belvoir, VA : Defense Technical Information Center, juillet 2002. http://dx.doi.org/10.21236/ada410200.

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Neighbors, Jeffrey, et David Wiemer. Molecular Basis for the Toxicity of Schweinfurthins to Breast Cancer cells. Fort Belvoir, VA : Defense Technical Information Center, mai 2005. http://dx.doi.org/10.21236/ada437244.

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Neighbors, Jeffrey D., et David Wiemer. Molecular Basis for the Toxicity of Schweinfurthins to Breast Cancer Cells. Fort Belvoir, VA : Defense Technical Information Center, mai 2003. http://dx.doi.org/10.21236/ada416777.

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