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Claudius Amyand's hernia is defined by the incarceration of the vermicular appendix through the hernial sac. The first appendectomy was performed in 1735. It is a very rare pathology. Therefore, the frequency of this pathology is not yet established. We report the observation of a 54-year-old patient with an estimated BMI of 25.5 kg: height2 with a simple inguinal hernia that was not followed up and admitted to the emergency room with a painless and impulsive inguinal swelling when coughing. The management consisted of a conditioning and a pre-anesthetic assessment. The intraoperative exploration revealed a right inguinal hernia with caecal and appendicular contents of viable appearance. The procedure included an appendectomy and cure of the hernia using the Lichtenstein technique. The evolution was marked by a resumption of transit 24 hours postoperatively, Appendicitis complicating an Amyand's hernia is a rare pathology that often presents in an atypical clinical picture of an inguinal painful mass without the occlusive syndrome. Its preoperative radiological diagnosis, although exceptional, is of interest given the atypical presentation allowing the elimination of local pathologies that sometimes do not require emergency surgery.

Idiopathic small bowel volvulus is a rare cause of acute intestinal obstruction by strangulation in adults and is defined by the twisting of a segment of the small bowel around its mesenteric axis with no obvious underlying congenital or acquired cause. This article reports the case of a 56-year-old patient, chronic smoker and cannabis user, who was admitted with febrile occlusive syndrome and generalized abdominal contracture. The abdominal CT scan showed a distension of the small intestines upstream of a probable small bowel volvulus, associated with signs of digestive distress. Surgical exploration revealed a large peritoneal effusion of distressed fluid, with a volvulus of the distal small bowel causing 1.80 m of small bowel and coecum necrosis from 2.20 ADJ without rotational abnormality or docking defect.

Trauma to the pancreas is rare, occurring in 0.2 to 3% of abdominal injuries. They are associated with high mortality and morbidity if diagnosis is delayed. Their clinical symptomatology is atypical. Abdominal CT scans can diagnose pancreatic injury and rupture of the main pancreatic duct. It is important that surgeons are aware of the issues and principles of management of pancreatic injury. We report the case of a 33-year-old patient with no previous pathological history. Admitted for a closed abdominal contusion following a road traffic accident with an abdominal impact point without initial loss of consciousness and generalized abdominal contracture. Abdominal CT scan showed a hypodense area in the tail of the pancreas not enhanced after contrast injection, possibly related to a pancreatic fracture and a medium-sized peritoneal effusion. The patient underwent corporo-caudal pancreatectomy with splenic preservation. Postoperative follow-up was favorable. The clinical evolution judged on regular controls was favorable over a period of 2 years. We would like to share a very difficult clinical case and our experience with the support of the literature. This is a challenge to clinicians and surgeons above all.

Gastrointestinal trichobezoar is a rare syndrome, defined by the accumulation inside the digestive tract of non-digestible material usually formed by hair rarely by textile fibers (wool of carpets or clothes), and source of many diagnostic and therapeutic errors and delays in the absence of evocative psychic context. We report the case of a 15-year-old adolescent with a history of carpet wool ingestion, who presented to the visceral emergency department with an occlusive syndrome, evolving since 4 days of his admission with alteration of his general state. Abdominal examination found a painful abdominal meteorism with no clinically palpable mass. The abdominal scan showed a distension of small intestine, suggesting an intestinal invagination. The surgical intervention was an extraction of a trichobezoard (wool from carpets) by the anal way.

The hemiterpene isoprene is a volatile C5 hydrocarbon with industrial applications. It is generated today from fossil resources, but can also be made in biological processes. We have utilized engineered photosynthetic cyanobacteria for direct, light-driven production of bio-isoprene from carbon dioxide, and show that isoprene in a subsequent photochemical step, using either near-UV or simulated or natural solar light, can be dimerized into limonene, paradiprene, and isomeric C10H16 hydrocarbons (monoterpenes) in high yields under photosensitized conditions (above 90% after 44 hours with near-UV and 61% with simulated solar light). The optimal sensitizer in our experiments is di(naphth-1-yl)methanone which we use with a loading of merely 0.1 mol%. It can also easily be recycled for subsequent photodimerization cycles. The isoprene dimers generated are a mixture of [2+2], [4+2] and [4+4] cycloadducts, and after hydrogenation this mixture is nearly ideal as a drop-in jet fuel. Importantly the photodimerization can be carried out at ambient conditions. However, the high content of hydrogenated [2+2] dimers in our isoprene dimer mix lowers the flash point below the threshold (38 °C), yet, these dimers can be converted thermally into [4+2] and [4+4] dimers. When hydrogenated these monoterpenoids fully satisfy the criteria for drop-in jet fuels with regard to energy density, flashpoint, kinematic viscosity, density, and freezing point. Life-cycle assessment results show a potential to produce the fuel in an environmentally sustainable way.

Organogenesis is an in vitro regeneration method used for rapid and large-scale propagation of a number of plant species. During the last decade, organogenesis has been used as a tool to rehabilitate date palm groves in Morocco, and resulted in the production of millions of date palm plantlets. In the present study, the production cost of date palm plantlets (cv. Mejhoul) obtained through direct organogenesis was estimated. The organogenesis protocol used was based on previously published studies. The cost analysis included the costs of offshoots, culture medium components, chemicals, equipment maintenance, water, fuel and electricity consumption as well as staff salaries and all the consumables used during in vitro work and plantlet acclimatization. The hardware (infrastructure, laboratory equipment and vessels) cost was not included. During the production process, the loss of plant material due to endophytic bacteria, tissue browning and hyperhydricity was taken into account. At the end of the organogenesis process, an average of 947.6 plantlets were produced from one offshoot. It was found that staff salaries (46.05%) and electricity consumption (26.16%) account for the majority of expenses. The production cost of one plantlet was estimated to be US$ 3.84. The findings of the present study highlight the economic feasibility of using organogenesis for date palm propagation. The production cost of date palm plantlets through organogenesis was estimated. The economic feasibility of this technique was highlighted when compared with conventional propagation through offshoots.