Manufacturing Of Robust Natural Fiber Preforms Utilizing Bacterial Cellulose as Binder

We present a novel method of manufacturing rigid and robust short natural fiber preforms using a papermaking process. Bacterial cellulose acts simultaneously as the binder for the loose fibers and provides rigidity to the fiber preforms. These preforms can be infused with a resin to produce truly green hierarchical composites

Dissecting the Hydrolytic Activities of Sarcoplasmic Reticulum ATPase in the Presence of Acetyl Phosphate

Sarcoplasmic reticulum vesicles and purified Ca$^{2+}$-ATPase hydrolyze acetyl phosphate both in the presence and absence of Ca$^{2+}$. The Ca$^{2+}$-independent activity was fully sensitive to vanadate, insensitive to thapsigargin, and proceeded without accumulation of phosphorylated enzyme. Acetyl phosphate hydrolysis in the absence of Ca$^{2+}$ was activated by dimethyl sulfoxide. The Ca$^{2+}$-dependent activity was partially sensitive to vanadate, fully sensitive to thapsigargin, and associated with steady phosphoenzyme accumulation. The Ca$^{2+}$/P(i) coupling ratio at neutral pH sustained by 10 mm acetyl phosphate was 0.57. Addition of 30% dimethyl sulfoxide completely blocked Ca$^{2+}$ transport and partially inhibited the hydrolysis rate. Uncoupling induced by dimethyl sulfoxide included the accumulation of vanadate-insensitive phosphorylated enzyme. When acetyl phosphate was the substrate, the hydrolytic pathway was dependent on experimental conditions that might or might not allow net Ca$^{2+}$ transport. The interdependence of both Ca$^{2+}$-dependent and Ca$^{2+}$-independent hydrolytic activities was demonstrated

Evaluación de las Acciones Eólicas Transversales en Edificios de más de 50m mediante Métodos Analíticos

This paper presents the relevance that can reach the cross-wind actions when isolated buildings with more that 50m height are designed by means of the different analysis methodologies that are stablishes in those three international codes: Eurocode, Australian and Japanese. This paper includes both cross-wind loads that are the result of periodic wind oscillations due to vortex shedding and that should unavoidably be considered in any isolated building, and wind actions that are a consequence of the frequency coupling between the vortex shedding and the fundamental frequency of the building. These actions may determine the design of the structure that has to face the horizontal actions over the building.En el presente trabajo se evalúa la relevancia que pueden llegar a adquirir las acciones eólicas transversales cuando se diseñan edificios aislados de más de 50m mediante las diferentes metodologías de análisis que establecen tres normas internacionales, el Eurocódigo, la norma australiana y la norma japonesa. El trabajo incluye tanto las acciones transversales que resultan de las oscilaciones periódicas del viento debido al desprendimiento de los vórtices, y que debiera ser considerado inevitablemente en cualquier edificio aislado, así como las acciones eólicas que son consecuencia del acoplamiento de frecuencias entre el propio desprendimiento de los vórtices y la frecuencia fundamental en sentido transversal del edificio, pudiendo dichas fuerzas llegar a condicionar el diseño de la estructura que debe hacer frente a las acciones horizontales del edificio

Miositis calcificante: estudio antropométrico y paleopatológico de tres casos

X Congreso Nacional de Paleopatología. Univesidad Autónoma de Madrid, septiembre de 200

Tendinopatía del radio: estudio anatómico y paleopatológico

X Congreso Nacional de Paleopatología. Univesidad Autónoma de Madrid, septiembre de 200

Tendinopatía de una clavícula: estudio anatómico y paleopatológico

X Congreso Nacional de Paleopatología. Univesidad Autónoma de Madrid, septiembre de 200

Patología traumática: estudio anatómico y paleopatológico de fracturas de miembros superiores e inferiores de la antigua población de Castielfabid (Rincón de Ademuz, Valencia)

X Congreso Nacional de Paleopatología. Univesidad Autónoma de Madrid, septiembre de 200

Gearing motion in cogwheel pairs of molecular rotors: weak-coupling limit

Variable-​temp. (VT) crystal structures, VT 1H spin-​lattice relaxation in static crystals, and DFT modeling of the rotational barriers of BCP rotators in cryst. arrays of a rod-​like mol. contg. two 1,​3-​bis(ethynyl)​bicyclo[1.1.1]​pentane (BCP) units demonstrate that a correlated gearing motion occurs in the limit of a weak coupling between two rotors in a pair