Coherent anti-Stokes Raman scattering (CARS) microscopy is combined with spontaneous Raman scattering microspectroscopy and second harmonic generation (SHG) microscopy to interrogate the molecular alignment in dry and hydrated cellulose fibers. Two types of cellulose were investigated: natural cellulose I in cotton fibers and regenerated cellulose II in rayon fibers. On the basis of the orienta...

The effects of aqueous solutions were evaluated on the properties of regenerated cellulosic nanofibers prepared from pure cellulose fibers in various formulations of aqueous solutions. Thermoplastic composites were prepared with reinforcement of the regenerated cellulosic nanofibers. The regenerated cellulosic fibers from cellulosic woody biomass were obtained from dissolved cellulose solutions...

PURPOSE To describe the evolving computed tomography (CT) appearances of a cellulose surgical bolster used as a hemostatic agent in patients who undergo laparoscopic partial nephrectomy for renal cell carcinoma. MATERIALS AND METHODS We retrospectively reviewed the follow-up CT studies of 33 patients with stage T1N0M0 renal carcinoma who underwent laparoscopic partial nephrectomy using a roll...

The proliferation of cultured human bone marrow stromal cells (HBMSC) on regenerated cellulose hydrogels was assessed. Regenerated cellulose hydrogels showed good rates of HBMSC proliferation, the cells exhibiting a flattened morphology, and after 22 days in culture, the cells had homogeneously colonized the surface of the materials. Moreover, since the early days in culture, between the surfac...

Cellulose is a renewable and biodegradable natural biopolymersynthesized mainly in plants such as wood, bark, cotton fiber, green algae, some bacteria and animals. Pre-treatment processes such as alkaline purification and enzymatic purification are applied in order to create a proper sorption characteristic of regenerated cellulose fiber. Prior to the application of cellulose/cellulose derivati...

OBJECTIVES Minor intraoperative bleeding during laparoscopy poses a significant challenge to the minimally invasive urologist. We report on our improvement of the previously reported laparoscopic cigarette sponge with absorbable materials. METHODS The sponge was constructed from a strip of absorbable gelatin sponge wrapped in oxidized regenerated cellulose and secured with absorbable suture. ...

BACKGROUND The development of painful leg ulcers in the ankle area is a rare and only partially described complication in patients receiving high-dose, long-term hydroxyurea treatment for myeloproliferative diseases. Several reports have described treatments for chronic wound management with this type of lesion. OBSERVATIONS We describe 2 patients who were diagnosed as having hydroxyurea-indu...

Massive hemoptysis is a life-threatening condition with a high mortality when treated conservatively. Several modalities have been described in the treatment of hemoptysis with varying results. Endobronchial therapy has traditionally been performed with rigid bronchoscopy. This requires both specialized training and equipment that is not readily available in many centers. The role of fiberoptic...